The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata Following concurrent processes:
    P1(drop cache) P2(kworker) drop_caches_sysctl_handler drop_slab shrink_slab down_read(&shrinker_rwsem) -     LOCK A do_shrink_slab super_cache_scan prune_icache_sb dispose_list evict ext4_evict_inode     ext4_clear_inode ext4_discard_preallocations ext4_mb_load_buddy_gfp ext4_mb_init_cache     ext4_read_block_bitmap_nowait ext4_read_bh_nowait submit_bh dm_submit_bio do_worker process_deferred_bios     commit metadata_operation_failed dm_pool_abort_metadata down_write(&pmd->root_lock) - LOCK B
    __destroy_persistent_data_objects dm_block_manager_destroy dm_bufio_client_destroy unregister_shrinker     down_write(&shrinker_rwsem) thin_map | dm_thin_find_block  down_read(&pmd->root_lock) --> ABBA deadlock ,     which triggers hung task: [ 76.974820] INFO: task kworker/u4:3:63 blocked for more than 15 seconds. [     76.976019] Not tainted 6.1.0-rc4-00011-g8f17dd350364-dirty #910 [ 76.978521] task:kworker/u4:3 state:D     stack:0 pid:63 ppid:2 [ 76.978534] Workqueue: dm-thin do_worker [ 76.978552] Call Trace: [ 76.978564]
    __schedule+0x6ba/0x10f0 [ 76.978582] schedule+0x9d/0x1e0 [ 76.978588]     rwsem_down_write_slowpath+0x587/0xdf0 [ 76.978600] down_write+0xec/0x110 [ 76.978607]     unregister_shrinker+0x2c/0xf0 [ 76.978616] dm_bufio_client_destroy+0x116/0x3d0 [ 76.978625]     dm_block_manager_destroy+0x19/0x40 [ 76.978629] __destroy_persistent_data_objects+0x5e/0x70 [ 76.978636]     dm_pool_abort_metadata+0x8e/0x100 [ 76.978643] metadata_operation_failed+0x86/0x110 [ 76.978649]     commit+0x6a/0x230 [ 76.978655] do_worker+0xc6e/0xd90 [ 76.978702] process_one_work+0x269/0x630 [     76.978714] worker_thread+0x266/0x630 [ 76.978730] kthread+0x151/0x1b0 [ 76.978772] INFO: task test.sh:2646     blocked for more than 15 seconds. [ 76.979756] Not tainted 6.1.0-rc4-00011-g8f17dd350364-dirty #910 [     76.982111] task:test.sh state:D stack:0 pid:2646 ppid:2459 [ 76.982128] Call Trace: [ 76.982139]
    __schedule+0x6ba/0x10f0 [ 76.982155] schedule+0x9d/0x1e0 [ 76.982159] rwsem_down_read_slowpath+0x4f4/0x910     [ 76.982173] down_read+0x84/0x170 [ 76.982177] dm_thin_find_block+0x4c/0xd0 [ 76.982183]     thin_map+0x201/0x3d0 [ 76.982188] __map_bio+0x5b/0x350 [ 76.982195] dm_submit_bio+0x2b6/0x930 [ 76.982202]
    __submit_bio+0x123/0x2d0 [ 76.982209] submit_bio_noacct_nocheck+0x101/0x3e0 [ 76.982222]     submit_bio_noacct+0x389/0x770 [ 76.982227] submit_bio+0x50/0xc0 [ 76.982232] submit_bh_wbc+0x15e/0x230 [     76.982238] submit_bh+0x14/0x20 [ 76.982241] ext4_read_bh_nowait+0xc5/0x130 [ 76.982247]     ext4_read_block_bitmap_nowait+0x340/0xc60 [ 76.982254] ext4_mb_init_cache+0x1ce/0xdc0 [ 76.982259]     ext4_mb_load_buddy_gfp+0x987/0xfa0 [ 76.982263] ext4_discard_preallocations+0x45d/0x830 [ 76.982274]     ext4_clear_inode+0x48/0xf0 [ 76.982280] ext4_evict_inode+0xcf/0xc70 [ 76.982285] evict+0x119/0x2b0 [     76.982290] dispose_list+0x43/0xa0 [ 76.982294] prune_icache_sb+0x64/0x90 [ 76.982298]     super_cache_scan+0x155/0x210 [ 76.982303] do_shrink_slab+0x19e/0x4e0 [ 76.982310] shrink_slab+0x2bd/0x450     [ 76.982317] drop_slab+0xcc/0x1a0 [ 76.982323] drop_caches_sysctl_handler+0xb7/0xe0 [ 76.982327]     proc_sys_call_handler+0x1bc/0x300 [ 76.982331] proc_sys_write+0x17/0x20 [ 76.982334] vfs_write+0x3d3/0x570     [ 76.982342] ksys_write+0x73/0x160 [ 76.982347] __x64_sys_write+0x1e/0x30 [ 76.982352]     do_syscall_64+0x35/0x80 [ 76.982357] entry_SYSCALL_64_after_hwframe+0x63/0xcd Funct ---truncated---     (CVE-2022-50549)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of kernel installed on the remote host is prior to 5.10.165-143.735. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2023-026 advisory.

    In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows     an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control     configuration that is set up with tc qdisc and tc class commands. This affects qdisc_graft in     net/sched/sch_api.c. (CVE-2022-47929)

    In the Linux kernel, the following vulnerability has been resolved:

    efi: fix NULL-deref in init error path (CVE-2022-48879)

    In the Linux kernel, the following vulnerability has been resolved:

    ixgbe: fix pci device refcount leak (CVE-2022-48896)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/virtio: Fix GEM handle creation UAF (CVE-2022-48899)

    In the Linux kernel, the following vulnerability has been resolved:

    rtc: cmos: Fix event handler registration ordering issue (CVE-2022-48953)

    In the Linux kernel, the following vulnerability has been resolved:

    drivers: net: qlcnic: Fix potential memory leak in qlcnic_sriov_init() (CVE-2022-50242)

    In the Linux kernel, the following vulnerability has been resolved:

    regulator: core: fix use_count leakage when handling boot-on (CVE-2022-50250)

    In the Linux kernel, the following vulnerability has been resolved:

    mmc: vub300: fix return value check of mmc_add_host() (CVE-2022-50251)

    In the Linux kernel, the following vulnerability has been resolved:

    igb: Do not free q_vector unless new one was allocated (CVE-2022-50252)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: make sure skb->len != 0 when redirecting to a tunneling device (CVE-2022-50253)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf, sockmap: fix race in sock_map_free() (CVE-2022-50259)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/radeon: Add the missed acpi_put_table() to fix memory leak (CVE-2022-50275)

    In the Linux kernel, the following vulnerability has been resolved:

    power: supply: fix null pointer dereferencing in power_supply_get_battery_info (CVE-2022-50276)

    In the Linux kernel, the following vulnerability has been resolved:

    PNP: fix name memory leak in pnp_alloc_dev() (CVE-2022-50278)

    In the Linux kernel, the following vulnerability has been resolved:

    pnode: terminate at peers of source (CVE-2022-50280)

    In the Linux kernel, the following vulnerability has been resolved:

    chardev: fix error handling in cdev_device_add() (CVE-2022-50282)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix delayed allocation bug in ext4_clu_mapped for bigalloc + inline (CVE-2022-50286)

    In the Linux kernel, the following vulnerability has been resolved:

    qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure (CVE-2022-50288)

    In the Linux kernel, the following vulnerability has been resolved:

    perf/x86/intel/uncore: Fix reference count leak in hswep_has_limit_sbox() (CVE-2022-50318)

    In the Linux kernel, the following vulnerability has been resolved:

    fs: jfs: fix shift-out-of-bounds in dbDiscardAG (CVE-2022-50333)

    In the Linux kernel, the following vulnerability has been resolved:

    hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param() (CVE-2022-50334)

    In the Linux kernel, the following vulnerability has been resolved:

    cifs: fix oops during encryption (CVE-2022-50341)

    In the Linux kernel, the following vulnerability has been resolved:

    rapidio: fix possible name leaks when rio_add_device() fails (CVE-2022-50343)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: init quota for 'old.inode' in 'ext4_rename' (CVE-2022-50346)

    In the Linux kernel, the following vulnerability has been resolved:

    misc: tifm: fix possible memory leak in tifm_7xx1_switch_media() (CVE-2022-50349)

    In the Linux kernel, the following vulnerability has been resolved:

    skbuff: Account for tail adjustment during pull operations (CVE-2022-50365)

    In the Linux kernel, the following vulnerability has been resolved:

    md: fix a crash in mempool_free (CVE-2022-50381)

    In the Linux kernel, the following vulnerability has been resolved:

    padata: Always leave BHs disabled when running ->parallel() (CVE-2022-50382)

    In the Linux kernel, the following vulnerability has been resolved:

    NFS: Fix an Oops in nfs_d_automount() (CVE-2022-50385)

    In the Linux kernel, the following vulnerability has been resolved:

    nvme: fix multipath crash caused by flush request when blktrace is enabled (CVE-2022-50388)

    In the Linux kernel, the following vulnerability has been resolved:

    tpm: tpm_crb: Add the missed acpi_put_table() to fix memory leak (CVE-2022-50389)

    In the Linux kernel, the following vulnerability has been resolved:

    integrity: Fix memory leakage in keyring allocation error path (CVE-2022-50395)

    In the Linux kernel, the following vulnerability has been resolved:

    net: sched: fix memory leak in tcindex_set_parms (CVE-2022-50396)

    In the Linux kernel, the following vulnerability has been resolved:

    nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure (CVE-2022-50401)

    In the Linux kernel, the following vulnerability has been resolved:

    drivers/md/md-bitmap: check the return value of md_bitmap_get_counter() (CVE-2022-50402)

    In the Linux kernel, the following vulnerability has been resolved:

    net/tunnel: wait until all sk_user_data reader finish before releasing the sock (CVE-2022-50405)

    In the Linux kernel, the following vulnerability has been resolved:

    ACPICA: Fix error code path in acpi_ds_call_control_method() (CVE-2022-50411)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: fcoe: Fix transport not deattached when fcoe_if_init() fails (CVE-2022-50414)

    In the Linux kernel, the following vulnerability has been resolved:

    ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() (CVE-2022-50423)

    In the Linux kernel, the following vulnerability has been resolved:

    mmc: vub300: fix warning - do not call blocking ops when !TASK_RUNNING (CVE-2022-50430)

    In the Linux kernel, the following vulnerability has been resolved:

    blk-mq: fix possible memleak when register 'hctx' failed (CVE-2022-50434)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: don't set up encryption key during jbd2 transaction (CVE-2022-50436)

    In the Linux kernel, the following vulnerability has been resolved:

    gpiolib: cdev: fix NULL-pointer dereferences (CVE-2022-50453)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix resolving backrefs for inline extent followed by prealloc (CVE-2022-50456)

    In the Linux kernel, the following vulnerability has been resolved:

    MIPS: vpe-mt: fix possible memory leak while module exiting (CVE-2022-50462)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix leaking uninitialized memory in fast-commit journal (CVE-2022-50465)

    In the Linux kernel, the following vulnerability has been resolved:

    cpufreq: Init completion before kobject_init_and_add() (CVE-2022-50473)

    In the Linux kernel, the following vulnerability has been resolved:

    macintosh: fix possible memory leak in macio_add_one_device() (CVE-2022-50474)

    In the Linux kernel, the following vulnerability has been resolved:

    nilfs2: fix shift-out-of-bounds/overflow in nilfs_sb2_bad_offset() (CVE-2022-50478)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode (CVE-2022-50485)

    In the Linux kernel, the following vulnerability has been resolved:

    dm cache: Fix UAF in destroy() (CVE-2022-50496)

    In the Linux kernel, the following vulnerability has been resolved:

    binfmt_misc: fix shift-out-of-bounds in check_special_flags (CVE-2022-50497)

    In the Linux kernel, the following vulnerability has been resolved:

    mtd: lpddr2_nvm: Fix possible null-ptr-deref (CVE-2022-50503)

    In the Linux kernel, the following vulnerability has been resolved:

    iommu/amd: Fix pci device refcount leak in ppr_notifier() (CVE-2022-50505)

    In the Linux kernel, the following vulnerability has been resolved:

    lib/fonts: fix undefined behavior in bit shift for get_default_font (CVE-2022-50511)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios() (CVE-2022-50520)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: mpt3sas: Fix possible resource leaks in mpt3sas_transport_port_add() (CVE-2022-50532)

    In the Linux kernel, the following vulnerability has been resolved:

    dm thin: Use last transaction's pmd->root when commit failed (CVE-2022-50534)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf, sockmap: Fix repeated calls to sock_put() when msg has more_data (CVE-2022-50536)

    In the Linux kernel, the following vulnerability has been resolved:

    dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata (CVE-2022-50549)

    The Linux kernel does not correctly mitigate SMT attacks, as discovered through a strange pattern in the     kernel API using STIBP as a mitigation, leaving the process exposed for a short period of time after a     syscall. The kernel also does not issue an IBPB immediately during the syscall. (CVE-2023-0045)

    A buffer overflow vulnerability was found in the Netfilter subsystem in the Linux Kernel. This issue could     allow the leakage of both stack and heap addresses, and potentially allow Local Privilege Escalation to     the root user via arbitrary code execution. (CVE-2023-0179)

    There is a logic error in io_uring's implementation which can be used to trigger a use-after-free     vulnerability leading to privilege escalation. In the io_prep_async_work function the assumption that the     last io_grab_identity call cannot return false is not true, and in this case the function will use the     init_cred or the previous linked requests identity to do operations instead of using the current identity.
    This can lead to reference counting issues causing use-after-free. We recommend upgrading past version     5.10.161. (CVE-2023-0240)

    A NULL pointer dereference flaw was found in rawv6_push_pending_frames in net/ipv6/raw.c in the network     subcomponent in the Linux kernel. This flaw causes the system to crash. (CVE-2023-0394)

    Detected a few exploitable gadgets that could leak secret memory through a side-channel such as MDS as     well as insufficient hardening of the usercopy functions against spectre-v1. (CVE-2023-0459)

    There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local     privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or     CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not require any privilege.

    There is a use-after-free bug of icsk_ulp_data of a struct inet_connection_sock.

    When CONFIG_TLS is enabled, user can install a tls context (struct tls_context) on a connected tcp socket.
    The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is     created from the listener, the context is inherited and vulnerable.

    The setsockopt TCP_ULP operation does not require any privilege.

    We recommend upgrading past commit 2c02d41d71f90a5168391b6a5f2954112ba2307c (CVE-2023-0461)

    efi: rt-wrapper: Add missing include (CVE-2023-21102)

    cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial     of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes     indicate a TC_ACT_SHOT condition rather than valid classification results). (CVE-2023-23454)

    atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial     of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition     rather than valid classification results). (CVE-2023-23455)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix race between quota rescan and disable leading to NULL pointer deref (CVE-2023-52896)

    In the Linux kernel, the following vulnerability has been resolved:

    xhci: Fix null pointer dereference when host dies (CVE-2023-52898)

    In the Linux kernel, the following vulnerability has been resolved:

    nilfs2: fix general protection fault in nilfs_btree_insert() (CVE-2023-52900)

    In the Linux kernel, the following vulnerability has been resolved:

    usb: xhci: Check endpoint is valid before dereferencing it (CVE-2023-52901)

    In the Linux kernel, the following vulnerability has been resolved:

    io_uring: lock overflowing for IOPOLL (CVE-2023-52903)

    In the Linux kernel, the following vulnerability has been resolved:

    net/sched: act_mpls: Fix warning during failed attribute validation (CVE-2023-52906)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function. (CVE-2023-53032)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits (CVE-2023-53033)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: ipset: Rework long task execution when adding/deleting entries (CVE-2023-53549)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of kernel installed on the remote host is prior to 5.15.90-54.138. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2023-013 advisory.

    In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows     an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control     configuration that is set up with tc qdisc and tc class commands. This affects qdisc_graft in     net/sched/sch_api.c. (CVE-2022-47929)

    A flaw NULL Pointer Dereference in the Linux kernel NTFS3 driver function attr_punch_hole() was found. A     local user could use this flaw to crash the system. (CVE-2022-4842)

    In the Linux kernel before 6.1.3, fs/ntfs3/inode.c does not validate the attribute name offset. An     unhandled page fault may occur. (CVE-2022-48424)

    In the Linux kernel, the following vulnerability has been resolved:

    efi: fix NULL-deref in init error path (CVE-2022-48879)

    In the Linux kernel, the following vulnerability has been resolved:

    sched/core: Fix use-after-free bug in dup_user_cpus_ptr() (CVE-2022-48892)

    In the Linux kernel, the following vulnerability has been resolved:

    fs/ntfs3: Validate BOOT record_size (CVE-2022-50262)

    In the Linux kernel, the following vulnerability has been resolved:

    pnode: terminate at peers of source (CVE-2022-50280)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix delayed allocation bug in ext4_clu_mapped for bigalloc + inline (CVE-2022-50286)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix extent map use-after-free when handling missing device in read_one_chunk (CVE-2022-50300)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix potential out of bound read in ext4_fc_replay_scan() (CVE-2022-50306)

    In the Linux kernel, the following vulnerability has been resolved:

    block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq (CVE-2022-50329)

    In the Linux kernel, the following vulnerability has been resolved:

    fs/ntfs3: Add null pointer check to attr_load_runs_vcn (CVE-2022-50336)

    In the Linux kernel, the following vulnerability has been resolved:

    cifs: fix oops during encryption (CVE-2022-50341)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: init quota for 'old.inode' in 'ext4_rename' (CVE-2022-50346)

    In the Linux kernel, the following vulnerability has been resolved:

    md: fix a crash in mempool_free (CVE-2022-50381)

    In the Linux kernel, the following vulnerability has been resolved:

    nvme: fix multipath crash caused by flush request when blktrace is enabled (CVE-2022-50388)

    In the Linux kernel, the following vulnerability has been resolved:

    tpm: tpm_crb: Add the missed acpi_put_table() to fix memory leak (CVE-2022-50389)

    In the Linux kernel, the following vulnerability has been resolved:

    net: sched: fix memory leak in tcindex_set_parms (CVE-2022-50396)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix off-by-one errors in fast-commit block filling (CVE-2022-50428)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: don't set up encryption key during jbd2 transaction (CVE-2022-50436)

    In the Linux kernel, the following vulnerability has been resolved:

    fs/ntfs3: Validate buffer length while parsing index (CVE-2022-50442)

    In the Linux kernel, the following vulnerability has been resolved:

    fs/ntfs3: Fix memory leak on ntfs_fill_super() error path (CVE-2022-50451)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix resolving backrefs for inline extent followed by prealloc (CVE-2022-50456)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix leaking uninitialized memory in fast-commit journal (CVE-2022-50465)

    In the Linux kernel, the following vulnerability has been resolved:

    cpufreq: Init completion before kobject_init_and_add() (CVE-2022-50473)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode (CVE-2022-50485)

    In the Linux kernel, the following vulnerability has been resolved:

    dm cache: Fix UAF in destroy() (CVE-2022-50496)

    In the Linux kernel, the following vulnerability has been resolved:

    fs/ntfs3: Validate data run offset (CVE-2022-50507)

    In the Linux kernel, the following vulnerability has been resolved:

    dm thin: Use last transaction's pmd->root when commit failed (CVE-2022-50534)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix uninititialized value in 'ext4_evict_inode' (CVE-2022-50546)

    In the Linux kernel, the following vulnerability has been resolved:

    dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata (CVE-2022-50549)

    The Linux kernel does not correctly mitigate SMT attacks, as discovered through a strange pattern in the     kernel API using STIBP as a mitigation, leaving the process exposed for a short period of time after a     syscall. The kernel also does not issue an IBPB immediately during the syscall. (CVE-2023-0045)

    A buffer overflow vulnerability was found in the Netfilter subsystem in the Linux Kernel. This issue could     allow the leakage of both stack and heap addresses, and potentially allow Local Privilege Escalation to     the root user via arbitrary code execution. (CVE-2023-0179)

    A NULL pointer dereference flaw was found in rawv6_push_pending_frames in net/ipv6/raw.c in the network     subcomponent in the Linux kernel. This flaw causes the system to crash. (CVE-2023-0394)

    Detected a few exploitable gadgets that could leak secret memory through a side-channel such as MDS as     well as insufficient hardening of the usercopy functions against spectre-v1. (CVE-2023-0459)

    There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local     privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or     CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not require any privilege.

    There is a use-after-free bug of icsk_ulp_data of a struct inet_connection_sock.

    When CONFIG_TLS is enabled, user can install a tls context (struct tls_context) on a connected tcp socket.
    The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is     created from the listener, the context is inherited and vulnerable.

    The setsockopt TCP_ULP operation does not require any privilege.

    We recommend upgrading past commit 2c02d41d71f90a5168391b6a5f2954112ba2307c (CVE-2023-0461)

    cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial     of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes     indicate a TC_ACT_SHOT condition rather than valid classification results). (CVE-2023-23454)

    atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial     of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition     rather than valid classification results). (CVE-2023-23455)

    In the Linux kernel 6.0.8, there is a use-after-free in run_unpack in fs/ntfs3/run.c, related to a     difference between NTFS sector size and media sector size. (CVE-2023-26544)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix race between quota rescan and disable leading to NULL pointer deref (CVE-2023-52896)

    In the Linux kernel, the following vulnerability has been resolved:

    xhci: Fix null pointer dereference when host dies (CVE-2023-52898)

    In the Linux kernel, the following vulnerability has been resolved:

    usb: xhci: Check endpoint is valid before dereferencing it (CVE-2023-52901)

    In the Linux kernel, the following vulnerability has been resolved:

    io_uring: lock overflowing for IOPOLL (CVE-2023-52903)

    In the Linux kernel, the following vulnerability has been resolved:

    net/sched: act_mpls: Fix warning during failed attribute validation (CVE-2023-52906)

    In the Linux kernel, the following vulnerability has been resolved:

    iommu/iova: Fix alloc iova overflows issue (CVE-2023-52910)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function. (CVE-2023-53032)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: nft_payload: incorrect arithmetics when fetching VLAN header bits (CVE-2023-53033)

    In the Linux kernel, the following vulnerability has been resolved:

    fs/ntfs3: don't hold ni_lock when calling truncate_setsize() (CVE-2023-53163)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: ipset: Rework long task execution when adding/deleting entries (CVE-2023-53549)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of kernel installed on the remote host is prior to 5.4.231-137.341. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2023-042 advisory.

    A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing     sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw     to potentially crash the system causing a denial of service. (CVE-2022-4129)

    In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows     an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control     configuration that is set up with tc qdisc and tc class commands. This affects qdisc_graft in     net/sched/sch_api.c. (CVE-2022-47929)

    In the Linux kernel, the following vulnerability has been resolved:

    efi: fix NULL-deref in init error path (CVE-2022-48879)

    In the Linux kernel, the following vulnerability has been resolved:

    ixgbe: fix pci device refcount leak (CVE-2022-48896)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/virtio: Fix GEM handle creation UAF (CVE-2022-48899)

    In the Linux kernel, the following vulnerability has been resolved:

    udf: Fix preallocation discarding at indirect extent boundary (CVE-2022-48946)

    In the Linux kernel, the following vulnerability has been resolved:

    igb: Initialize mailbox message for VF reset (CVE-2022-48949)

    In the Linux kernel, the following vulnerability has been resolved:

    perf/x86/amd: fix potential integer overflow on shift of a int (CVE-2022-49748)

    In the Linux kernel, the following vulnerability has been resolved:

    dmaengine: Fix double increment of client_count in dma_chan_get() (CVE-2022-49753)

    In the Linux kernel, the following vulnerability has been resolved:

    drivers: net: qlcnic: Fix potential memory leak in qlcnic_sriov_init() (CVE-2022-50242)

    In the Linux kernel, the following vulnerability has been resolved:

    regulator: core: fix use_count leakage when handling boot-on (CVE-2022-50250)

    In the Linux kernel, the following vulnerability has been resolved:

    mmc: vub300: fix return value check of mmc_add_host() (CVE-2022-50251)

    In the Linux kernel, the following vulnerability has been resolved:

    igb: Do not free q_vector unless new one was allocated (CVE-2022-50252)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: make sure skb->len != 0 when redirecting to a tunneling device (CVE-2022-50253)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf, sockmap: fix race in sock_map_free() (CVE-2022-50259)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/radeon: Add the missed acpi_put_table() to fix memory leak (CVE-2022-50275)

    In the Linux kernel, the following vulnerability has been resolved:

    power: supply: fix null pointer dereferencing in power_supply_get_battery_info (CVE-2022-50276)

    In the Linux kernel, the following vulnerability has been resolved:

    PNP: fix name memory leak in pnp_alloc_dev() (CVE-2022-50278)

    In the Linux kernel, the following vulnerability has been resolved:

    pnode: terminate at peers of source (CVE-2022-50280)

    In the Linux kernel, the following vulnerability has been resolved:

    chardev: fix error handling in cdev_device_add() (CVE-2022-50282)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: fix delayed allocation bug in ext4_clu_mapped for bigalloc + inline (CVE-2022-50286)

    In the Linux kernel, the following vulnerability has been resolved:

    qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure (CVE-2022-50288)

    In the Linux kernel, the following vulnerability has been resolved:

    perf/x86/intel/uncore: Fix reference count leak in hswep_has_limit_sbox() (CVE-2022-50318)

    In the Linux kernel, the following vulnerability has been resolved:

    fs: jfs: fix shift-out-of-bounds in dbDiscardAG (CVE-2022-50333)

    In the Linux kernel, the following vulnerability has been resolved:

    hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param() (CVE-2022-50334)

    In the Linux kernel, the following vulnerability has been resolved:

    cifs: fix oops during encryption (CVE-2022-50341)

    In the Linux kernel, the following vulnerability has been resolved:

    rapidio: fix possible name leaks when rio_add_device() fails (CVE-2022-50343)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: init quota for 'old.inode' in 'ext4_rename' (CVE-2022-50346)

    In the Linux kernel, the following vulnerability has been resolved:

    misc: tifm: fix possible memory leak in tifm_7xx1_switch_media() (CVE-2022-50349)

    In the Linux kernel, the following vulnerability has been resolved:

    skbuff: Account for tail adjustment during pull operations (CVE-2022-50365)

    In the Linux kernel, the following vulnerability has been resolved:

    md: fix a crash in mempool_free (CVE-2022-50381)

    In the Linux kernel, the following vulnerability has been resolved:

    tpm: tpm_crb: Add the missed acpi_put_table() to fix memory leak (CVE-2022-50389)

    In the Linux kernel, the following vulnerability has been resolved:

    integrity: Fix memory leakage in keyring allocation error path (CVE-2022-50395)

    In the Linux kernel, the following vulnerability has been resolved:

    net: sched: fix memory leak in tcindex_set_parms (CVE-2022-50396)

    In the Linux kernel, the following vulnerability has been resolved:

    nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure (CVE-2022-50401)

    In the Linux kernel, the following vulnerability has been resolved:

    drivers/md/md-bitmap: check the return value of md_bitmap_get_counter() (CVE-2022-50402)

    In the Linux kernel, the following vulnerability has been resolved:

    net/tunnel: wait until all sk_user_data reader finish before releasing the sock (CVE-2022-50405)

    In the Linux kernel, the following vulnerability has been resolved:

    ACPICA: Fix error code path in acpi_ds_call_control_method() (CVE-2022-50411)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: fcoe: Fix transport not deattached when fcoe_if_init() fails (CVE-2022-50414)

    In the Linux kernel, the following vulnerability has been resolved:

    ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage() (CVE-2022-50423)

    In the Linux kernel, the following vulnerability has been resolved:

    mmc: vub300: fix warning - do not call blocking ops when !TASK_RUNNING (CVE-2022-50430)

    In the Linux kernel, the following vulnerability has been resolved:

    blk-mq: fix possible memleak when register 'hctx' failed (CVE-2022-50434)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix resolving backrefs for inline extent followed by prealloc (CVE-2022-50456)

    In the Linux kernel, the following vulnerability has been resolved:

    MIPS: vpe-mt: fix possible memory leak while module exiting (CVE-2022-50462)

    In the Linux kernel, the following vulnerability has been resolved:

    cpufreq: Init completion before kobject_init_and_add() (CVE-2022-50473)

    In the Linux kernel, the following vulnerability has been resolved:

    macintosh: fix possible memory leak in macio_add_one_device() (CVE-2022-50474)

    In the Linux kernel, the following vulnerability has been resolved:

    nilfs2: fix shift-out-of-bounds/overflow in nilfs_sb2_bad_offset() (CVE-2022-50478)

    In the Linux kernel, the following vulnerability has been resolved:

    ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode (CVE-2022-50485)

    In the Linux kernel, the following vulnerability has been resolved:

    dm cache: Fix UAF in destroy() (CVE-2022-50496)

    In the Linux kernel, the following vulnerability has been resolved:

    binfmt_misc: fix shift-out-of-bounds in check_special_flags (CVE-2022-50497)

    In the Linux kernel, the following vulnerability has been resolved:

    mtd: lpddr2_nvm: Fix possible null-ptr-deref (CVE-2022-50503)

    In the Linux kernel, the following vulnerability has been resolved:

    lib/fonts: fix undefined behavior in bit shift for get_default_font (CVE-2022-50511)

    In the Linux kernel, the following vulnerability has been resolved:

    drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios() (CVE-2022-50520)

    In the Linux kernel, the following vulnerability has been resolved:

    scsi: mpt3sas: Fix possible resource leaks in mpt3sas_transport_port_add() (CVE-2022-50532)

    In the Linux kernel, the following vulnerability has been resolved:

    dm thin: Use last transaction's pmd->root when commit failed (CVE-2022-50534)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf, sockmap: Fix repeated calls to sock_put() when msg has more_data (CVE-2022-50536)

    In the Linux kernel, the following vulnerability has been resolved:

    dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata (CVE-2022-50549)

    The Linux kernel does not correctly mitigate SMT attacks, as discovered through a strange pattern in the     kernel API using STIBP as a mitigation, leaving the process exposed for a short period of time after a     syscall. The kernel also does not issue an IBPB immediately during the syscall. (CVE-2023-0045)

    A NULL pointer dereference flaw was found in rawv6_push_pending_frames in net/ipv6/raw.c in the network     subcomponent in the Linux kernel. This flaw causes the system to crash. (CVE-2023-0394)

    Detected a few exploitable gadgets that could leak secret memory through a side-channel such as MDS as     well as insufficient hardening of the usercopy functions against spectre-v1. (CVE-2023-0459)

    There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local     privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or     CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not require any privilege.

    There is a use-after-free bug of icsk_ulp_data of a struct inet_connection_sock.

    When CONFIG_TLS is enabled, user can install a tls context (struct tls_context) on a connected tcp socket.
    The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is     created from the listener, the context is inherited and vulnerable.

    The setsockopt TCP_ULP operation does not require any privilege.

    We recommend upgrading past commit 2c02d41d71f90a5168391b6a5f2954112ba2307c (CVE-2023-0461)

    A memory corruption flaw was found in the Linux kernel's human interface device (HID) subsystem in how a     user inserts a malicious USB device. This flaw allows a local user to crash or potentially escalate their     privileges on the system. (CVE-2023-1073)

    cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial     of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes     indicate a TC_ACT_SHOT condition rather than valid classification results). (CVE-2023-23454)

    atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial     of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition     rather than valid classification results). (CVE-2023-23455)

    In the Linux kernel, the following vulnerability has been resolved:

    btrfs: fix race between quota rescan and disable leading to NULL pointer deref (CVE-2023-52896)

    In the Linux kernel, the following vulnerability has been resolved:

    xhci: Fix null pointer dereference when host dies (CVE-2023-52898)

    In the Linux kernel, the following vulnerability has been resolved:

    nilfs2: fix general protection fault in nilfs_btree_insert() (CVE-2023-52900)

    In the Linux kernel, the following vulnerability has been resolved:

    usb: xhci: Check endpoint is valid before dereferencing it (CVE-2023-52901)

    In the Linux kernel, the following vulnerability has been resolved:

    net/sched: act_mpls: Fix warning during failed attribute validation (CVE-2023-52906)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Skip task with pid=1 in send_signal_common() (CVE-2023-52992)

    In the Linux kernel, the following vulnerability has been resolved:

    x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL (CVE-2023-52993)

    In the Linux kernel, the following vulnerability has been resolved:

    ipv4: prevent potential spectre v1 gadget in fib_metrics_match() (CVE-2023-52996)

    In the Linux kernel, the following vulnerability has been resolved:

    ipv4: prevent potential spectre v1 gadget in ip_metrics_convert() (CVE-2023-52997)

    In the Linux kernel, the following vulnerability has been resolved:

    net: fix UaF in netns ops registration error path (CVE-2023-52999)

    In the Linux kernel, the following vulnerability has been resolved:

    netlink: prevent potential spectre v1 gadgets (CVE-2023-53000)

    In the Linux kernel, the following vulnerability has been resolved:

    cifs: Fix oops due to uncleared server->smbd_conn in reconnect (CVE-2023-53006)

    In the Linux kernel, the following vulnerability has been resolved:

    tracing: Make sure trace_printk() can output as soon as it can be used (CVE-2023-53007)

    In the Linux kernel, the following vulnerability has been resolved:

    HID: betop: check shape of output reports (CVE-2023-53015)

    In the Linux kernel, the following vulnerability has been resolved:

    net: mdio: validate parameter addr in mdiobus_get_phy() (CVE-2023-53019)

    In the Linux kernel, the following vulnerability has been resolved:

    net/sched: sch_taprio: fix possible use-after-free (CVE-2023-53021)

    In the Linux kernel, the following vulnerability has been resolved:

    bpf: Fix pointer-leak due to insufficient speculative store bypass mitigation (CVE-2023-53024)

    In the Linux kernel, the following vulnerability has been resolved:

    RDMA/core: Fix ib block iterator counter overflow (CVE-2023-53026)

    In the Linux kernel, the following vulnerability has been resolved:

    netfilter: ipset: Fix overflow before widen in the bitmap_ip_create() function. (CVE-2023-53032)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the linux package has been released.

ID	Name	Product	Family	Published	Updated	Severity
269259	Linux Distros Unpatched Vulnerability : CVE-2022-50549	Nessus	Misc.	10/8/2025	10/14/2025	medium
171216	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2023-026 (ALASKERNEL-5.10-2023-026)	Nessus	Amazon Linux Local Security Checks	2/8/2023	10/24/2025	high
171227	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2023-013 (ALASKERNEL-5.15-2023-013)	Nessus	Amazon Linux Local Security Checks	2/8/2023	10/24/2025	high
171848	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2023-042 (ALASKERNEL-5.4-2023-042)	Nessus	Amazon Linux Local Security Checks	2/23/2023	10/24/2025	high
153035	Photon OS 4.0: Linux PHSA-2021-4.0-0095	Nessus	PhotonOS Local Security Checks	9/7/2021	10/16/2025	high

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