In the Linux kernel, the following vulnerability has been resolved: bpf: fix a memory leak in the LRU and LRU_PERCPU hash maps The LRU and LRU_PERCPU maps allocate a new element on update before locking the target hash table bucket. Right after that the maps try to lock the bucket. If this fails, then maps return -EBUSY to the caller without releasing the allocated element. This makes the element untracked: it doesn't belong to either of free lists, and it doesn't belong to the hash table, so can't be re-used; this eventually leads to the permanent -ENOMEM on LRU map updates, which is unexpected. Fix this by returning the element to the local free list if bucket locking fails.

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

  - bpf: fix a memory leak in the LRU and LRU_PERCPU hash maps The LRU and LRU_PERCPU maps allocate a new     element on update before locking the target hash table bucket. Right after that the maps try to lock the     bucket. If this fails, then maps return -EBUSY to the caller without releasing the allocated element. This     makes the element untracked: it doesn't belong to either of free lists, and it doesn't belong to the hash     table, so can't be re-used; this eventually leads to the permanent -ENOMEM on LRU map updates, which is     unexpected. Fix this by returning the element to the local free list if bucket locking fails.
    (CVE-2023-54033)

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 5.15.117-72.142. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2023-021 advisory.

    In the Linux kernel through 6.2.7, fs/ntfs3/inode.c has an invalid kfree because it does not validate MFT     flags before replaying logs. (CVE-2022-48425)

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

    binder: fix UAF of alloc->vma in race with munmap() (CVE-2022-50240)

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

    binder: fix UAF of alloc->vma in race with munmap() (CVE-2022-50338)

    There is a potential deadlock in the eBPF subsystem in the Linux kernel.

    The default sysctl configuration kernel.unprivileged_bpf_disabled on Amazon Linux does not allow     unprivileged users to use eBPF. (CVE-2023-0160)

    A flaw was found in the Linux kernel's networking subsystem within the RPL protocol's handling. This issue     results from the improper handling of user-supplied data, which can lead to an assertion failure. This     flaw allows an unauthenticated, remote attacker to create a denial of service condition on the system.
    (CVE-2023-2156)

    A heap out-of-bounds write vulnerability in the Linux Kernel ipvlan network driver can be exploited to     achieve local privilege escalation.

    The out-of-bounds write is caused by missing skb->cb  initialization in the ipvlan network driver. The     vulnerability is reachable if CONFIG_IPVLAN is enabled.

    We recommend upgrading past commit 90cbed5247439a966b645b34eb0a2e037836ea8e. (CVE-2023-3090)

    A flaw in the Linux Kernel found in the GFS2 file system. On corrupted gfs2 file systems the evict code     can try to reference the journal descriptor structure, jdesc, after it has been freed and set to NULL. It     can lead to null pointer dereference when gfs2_trans_begin being called and then fail     ingfs2_evict_inode(). (CVE-2023-3212)

    An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in     kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel     internal information. (CVE-2023-3268)

    An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in     lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an     offset. (CVE-2023-34256)

    A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux     Kernel. In this flaw an attacker with local user access may lead to a system crash or a leak of internal     kernel information. (CVE-2023-3567)

    An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7.
    It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets.
    This may result in denial of service or privilege escalation. (CVE-2023-35788)

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

    serial: 8250: Reinit port->pm on port specific driver unbind (CVE-2023-53176)

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

    ACPICA: Avoid undefined behavior: applying zero offset to null pointer (CVE-2023-53182)

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

    fs/ntfs3: Add length check in indx_get_root (CVE-2023-53194)

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

    ext4: fix i_disksize exceeding i_size problem in paritally written case (CVE-2023-53270)

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

    ext4: add bounds checking in get_max_inline_xattr_value_size() (CVE-2023-53285)

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

    fs/ntfs3: Fix null-ptr-deref on inode->i_op in ntfs_lookup() (CVE-2023-53294)

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

    md/raid10: fix leak of 'r10bio->remaining' for recovery (CVE-2023-53299)

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

    ext4: fix WARNING in mb_find_extent (CVE-2023-53317)

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

    rcu: Protect rcu_print_task_exp_stall() ->exp_tasks access (CVE-2023-53419)

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

    net: add vlan_get_protocol_and_depth() helper (CVE-2023-53433)

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

    ext4: remove a BUG_ON in ext4_mb_release_group_pa() (CVE-2023-53450)

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

    ext4: improve error handling from ext4_dirhash() (CVE-2023-53473)

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

    x86/MCE/AMD: Use an u64 for bank_map (CVE-2023-53474)

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

    lib: cpu_rmap: Avoid use after free on rmap->obj array entries (CVE-2023-53484)

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

    fs/ntfs3: Enhance the attribute size check (CVE-2023-53486)

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

    tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. (CVE-2023-53489)

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

    virtio_net: Fix error unwinding of XDP initialization (CVE-2023-53499)

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

    ext4: allow ext4_get_group_info() to fail (CVE-2023-53503)

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

    nbd: fix incomplete validation of ioctl arg (CVE-2023-53513)

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

    blk-crypto: make blk_crypto_evict_key() more robust (CVE-2023-53536)

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

    netfilter: nft_set_rbtree: fix null deref on element insertion (CVE-2023-53566)

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

    drm/i915: Make intel_get_crtc_new_encoder() less oopsy (CVE-2023-53571)

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

    null_blk: Always check queue mode setting from configfs (CVE-2023-53576)

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

    scsi: target: Fix multiple LUN_RESET handling (CVE-2023-53586)

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

    ring-buffer: Sync IRQ works before buffer destruction (CVE-2023-53587)

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

    net/mlx5e: Fix deadlock in tc route query code (CVE-2023-53591)

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

    dm integrity: call kmem_cache_destroy() in dm_integrity_init() error path (CVE-2023-53604)

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

    net/sched: sch_fq: fix integer overflow of credit (CVE-2023-53624)

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

    rcu: Avoid stack overflow due to __rcu_irq_enter_check_tick() being kprobe-ed (CVE-2023-53655)

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

    ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline (CVE-2023-53692)

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

    ipv6: Fix out-of-bounds access in ipv6_find_tlv() (CVE-2023-53705)

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

    fs/ntfs3: Fix NULL dereference in ni_write_inode (CVE-2023-53732)

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

    vc_screen: reload load of struct vc_data pointer in vcs_write() to avoid UAF (CVE-2023-53747)

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

    dm flakey: fix a crash with invalid table line (CVE-2023-53786)

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

    ethtool: Fix uninitialized number of lanes (CVE-2023-53798)

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

    blk-mq: release crypto keyslot before reporting I/O complete (CVE-2023-53810)

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

    md/raid10: fix null-ptr-deref in raid10_sync_request (CVE-2023-53832)

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

    netlink: annotate accesses to nlk->cb_running (CVE-2023-53853)

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

    fs/ntfs3: Fix slab-out-of-bounds read in hdr_delete_de() (CVE-2023-53988)

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

    SMB3: Add missing locks to protect deferred close file list (CVE-2023-53990)

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

    udplite: Fix NULL pointer dereference in __sk_mem_raise_allocated(). (CVE-2023-54004)

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

    vmci_host: fix a race condition in vmci_host_poll() causing GPF (CVE-2023-54007)

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

    net: fix stack overflow when LRO is disabled for virtual interfaces (CVE-2023-54012)

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

    net/mlx5: Devcom, fix error flow in mlx5_devcom_register_device (CVE-2023-54015)

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

    ext4: set goal start correctly in ext4_mb_normalize_request (CVE-2023-54021)

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

    bpf: fix a memory leak in the LRU and LRU_PERCPU hash maps (CVE-2023-54033)

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

    spmi: Add a check for remove callback when removing a SPMI driver (CVE-2023-54044)

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

    kheaders: Use array declaration instead of char (CVE-2023-54056)

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

    ext4: fix invalid free tracking in ext4_xattr_move_to_block() (CVE-2023-54062)

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

    fs/ntfs3: Fix OOB read in indx_insert_into_buffer (CVE-2023-54063)

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

    fs/ntfs3: Fix memory leak if ntfs_read_mft failed (CVE-2023-54077)

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

    bpf: Add preempt_count_{sub,add} into btf id deny list (CVE-2023-54086)

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

    net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment() (CVE-2023-54114)

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

    inotify: Avoid reporting event with invalid wd (CVE-2023-54119)

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

    md/raid10: fix memleak for 'conf->bio_split' (CVE-2023-54123)

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

    binder: fix UAF of alloc->vma in race with munmap() (CVE-2023-54157)

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

    btrfs: don't free qgroup space unless specified (CVE-2023-54158)

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

    firmware: arm_sdei: Fix sleep from invalid context BUG (CVE-2023-54160)

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

    net/sched: cls_api: remove block_cb from driver_list before freeing (CVE-2023-54193)

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

    fs/ntfs3: Fix NULL pointer dereference in 'ni_write_inode' (CVE-2023-54196)

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

    netfilter: nf_tables: always release netdev hooks from notifier (CVE-2023-54200)

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

    net: Fix load-tearing on sk->sk_stamp in sock_recv_cmsgs(). (CVE-2023-54218)

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

    af_unix: Fix data races around sk->sk_shutdown. (CVE-2023-54226)

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

    ACPI: EC: Fix oops when removing custom query handlers (CVE-2023-54244)

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

    fs/ntfs3: Add check for kmemdup (CVE-2023-54248)

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

    debugobjects: Don't wake up kswapd from fill_pool() (CVE-2023-54268)

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

    SUNRPC: double free xprt_ctxt while still in use (CVE-2023-54269)

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

    fs/ntfs3: Fix a possible null-pointer dereference in ni_clear() (CVE-2023-54272)

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

    md/raid10: fix memleak of md thread (CVE-2023-54294)

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

    ext4: fix deadlock when converting an inline directory in nojournal mode (CVE-2023-54311)

    A use-after-free flaw was found in the __ext4_remount in fs/ext4/super.c in ext4 in the Linux kernel. This     flaw allows a local user to cause an information leak problem while freeing the old quota file names     before a potential failure, leading to a use-after-free. (CVE-2024-0775)

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-228 advisory.

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

    binder: fix UAF of alloc->vma in race with munmap() (CVE-2022-50240)

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

    binder: fix UAF of alloc->vma in race with munmap() (CVE-2022-50338)

    A flaw was found in the Linux kernel's networking subsystem within the RPL protocol's handling. This issue     results from the improper handling of user-supplied data, which can lead to an assertion failure. This     flaw allows an unauthenticated, remote attacker to create a denial of service condition on the system.
    (CVE-2023-2156)

    A heap out-of-bounds write vulnerability in the Linux Kernel ipvlan network driver can be exploited to     achieve local privilege escalation.

    The out-of-bounds write is caused by missing skb->cb  initialization in the ipvlan network driver. The     vulnerability is reachable if CONFIG_IPVLAN is enabled.

    We recommend upgrading past commit 90cbed5247439a966b645b34eb0a2e037836ea8e. (CVE-2023-3090)

    A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux     Kernel. In this flaw an attacker with local user access may lead to a system crash or a leak of internal     kernel information. (CVE-2023-3567)

    An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7.
    It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets.
    This may result in denial of service or privilege escalation. (CVE-2023-35788)

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

    serial: 8250: Reinit port->pm on port specific driver unbind (CVE-2023-53176)

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

    mm: fix zswap writeback race condition (CVE-2023-53178)

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

    ACPICA: Avoid undefined behavior: applying zero offset to null pointer (CVE-2023-53182)

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

    irqchip/gicv3: Workaround for NVIDIA erratum T241-FABRIC-4 (CVE-2023-53383)

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

    rcu: Protect rcu_print_task_exp_stall() ->exp_tasks access (CVE-2023-53419)

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

    net: add vlan_get_protocol_and_depth() helper (CVE-2023-53433)

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

    net: skb_partial_csum_set() fix against transport header magic value (CVE-2023-53439)

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

    ACPI: processor: Check for null return of devm_kzalloc() in fch_misc_setup() (CVE-2023-53483)

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

    lib: cpu_rmap: Avoid use after free on rmap->obj array entries (CVE-2023-53484)

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

    virtio_net: Fix error unwinding of XDP initialization (CVE-2023-53499)

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

    ext4: allow ext4_get_group_info() to fail (CVE-2023-53503)

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

    nbd: fix incomplete validation of ioctl arg (CVE-2023-53513)

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

    netfilter: nft_set_rbtree: fix null deref on element insertion (CVE-2023-53566)

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

    null_blk: Always check queue mode setting from configfs (CVE-2023-53576)

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

    md: fix soft lockup in status_resync (CVE-2023-53620)

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

    tun: Fix memory leak for detached NAPI queue. (CVE-2023-53685)

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

    ipv6: Fix out-of-bounds access in ipv6_find_tlv() (CVE-2023-53705)

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

    net: fix skb leak in __skb_tstamp_tx() (CVE-2023-53716)

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

    vc_screen: reload load of struct vc_data pointer in vcs_write() to avoid UAF (CVE-2023-53747)

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

    drm/i915: Fix NULL ptr deref by checking new_crtc_state (CVE-2023-53833)

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

    netlink: annotate accesses to nlk->cb_running (CVE-2023-53853)

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

    udplite: Fix NULL pointer dereference in __sk_mem_raise_allocated(). (CVE-2023-54004)

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

    net: fix stack overflow when LRO is disabled for virtual interfaces (CVE-2023-54012)

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

    ext4: set goal start correctly in ext4_mb_normalize_request (CVE-2023-54021)

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

    bpf: fix a memory leak in the LRU and LRU_PERCPU hash maps (CVE-2023-54033)

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

    bpf: Add preempt_count_{sub,add} into btf id deny list (CVE-2023-54086)

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

    net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment() (CVE-2023-54114)

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

    drm/fbdev-generic: prohibit potential out-of-bounds access (CVE-2023-54116)

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

    binder: fix UAF of alloc->vma in race with munmap() (CVE-2023-54157)

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

    firmware: arm_sdei: Fix sleep from invalid context BUG (CVE-2023-54160)

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

    scsi: target: iscsit: Free cmds before session free (CVE-2023-54184)

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

    netfilter: nf_tables: always release netdev hooks from notifier (CVE-2023-54200)

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

    net: Fix load-tearing on sk->sk_stamp in sock_recv_cmsgs(). (CVE-2023-54218)

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

    af_unix: Fix data races around sk->sk_shutdown. (CVE-2023-54226)

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

    block, bfq: Fix division by zero error on zero wsum (CVE-2023-54242)

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

    ACPI: EC: Fix oops when removing custom query handlers (CVE-2023-54244)

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

    debugobjects: Don't wake up kswapd from fill_pool() (CVE-2023-54268)

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

    SUNRPC: double free xprt_ctxt while still in use (CVE-2023-54269)

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.

ID	Name	Product	Family	Type	Severity
279914	Linux Distros Unpatched Vulnerability : CVE-2023-54033	Nessus	Misc.	Local	medium
177781	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2023-021 (ALASKERNEL-5.15-2023-021)	Nessus	Amazon Linux Local Security Checks	Local	high
177674	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-228)	Nessus	Amazon Linux Local Security Checks	Local	high

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