In the Linux kernel, the following vulnerability has been resolved: net: sched: sfb: fix null pointer access issue when sfb_init() fails When the default qdisc is sfb, if the qdisc of dev_queue fails to be inited during mqprio_init(), sfb_reset() is invoked to clear resources. In this case, the q->qdisc is NULL, and it will cause gpf issue. The process is as follows: qdisc_create_dflt() sfb_init() tcf_block_get() --->failed, q->qdisc is NULL ... qdisc_put() ... sfb_reset() qdisc_reset(q->qdisc) --->q->qdisc is NULL ops = qdisc->ops The following is the Call Trace information: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] RIP: 0010:qdisc_reset+0x2b/0x6f0 Call Trace: <TASK> sfb_reset+0x37/0xd0 qdisc_reset+0xed/0x6f0 qdisc_destroy+0x82/0x4c0 qdisc_put+0x9e/0xb0 qdisc_create_dflt+0x2c3/0x4a0 mqprio_init+0xa71/0x1760 qdisc_create+0x3eb/0x1000 tc_modify_qdisc+0x408/0x1720 rtnetlink_rcv_msg+0x38e/0xac0 netlink_rcv_skb+0x12d/0x3a0 netlink_unicast+0x4a2/0x740 netlink_sendmsg+0x826/0xcc0 sock_sendmsg+0xc5/0x100 ____sys_sendmsg+0x583/0x690 ___sys_sendmsg+0xe8/0x160 __sys_sendmsg+0xbf/0x160 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f2164122d04 </TASK>

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

  - net: sched: sfb: fix null pointer access issue when sfb_init() fails When the default qdisc is sfb, if the     qdisc of dev_queue fails to be inited during mqprio_init(), sfb_reset() is invoked to clear resources. In     this case, the q->qdisc is NULL, and it will cause gpf issue. The process is as follows:
    qdisc_create_dflt() sfb_init() tcf_block_get() --->failed, q->qdisc is NULL ... qdisc_put() ...
    sfb_reset() qdisc_reset(q->qdisc) --->q->qdisc is NULL ops = qdisc->ops The following is the Call Trace     information: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1]     PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] RIP:
    0010:qdisc_reset+0x2b/0x6f0 Call Trace: <TASK> sfb_reset+0x37/0xd0 qdisc_reset+0xed/0x6f0     qdisc_destroy+0x82/0x4c0 qdisc_put+0x9e/0xb0 qdisc_create_dflt+0x2c3/0x4a0 mqprio_init+0xa71/0x1760     qdisc_create+0x3eb/0x1000 tc_modify_qdisc+0x408/0x1720 rtnetlink_rcv_msg+0x38e/0xac0     netlink_rcv_skb+0x12d/0x3a0 netlink_unicast+0x4a2/0x740 netlink_sendmsg+0x826/0xcc0     sock_sendmsg+0xc5/0x100 ____sys_sendmsg+0x583/0x690 ___sys_sendmsg+0xe8/0x160 __sys_sendmsg+0xbf/0x160     do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f2164122d04 </TASK>     (CVE-2022-50356)

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 5.10.155-138.670. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2022-023 advisory.

    A memory overflow vulnerability was found in the Linux kernel's ipc functionality of the memcg subsystem,     in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local     user to starve the resources, causing a denial of service. The highest threat from this vulnerability is     to system availability. (CVE-2021-3759)

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

    inet: fully convert sk->sk_rx_dst to RCU rules (CVE-2021-47103)

    A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this     vulnerability is the function ipv6_renew_options of the component IPv6 Handler. The manipulation leads to     memory leak. The attack can be launched remotely. It is recommended to apply a patch to fix this issue.
    The identifier VDB-211021 was assigned to this vulnerability. (CVE-2022-3524)

    A vulnerability classified as problematic was found in Linux Kernel. This vulnerability affects the     function bnx2x_tpa_stop of the file drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c of the component BPF.
    The manipulation leads to memory leak. It is recommended to apply a patch to fix this issue. VDB-211042 is     the identifier assigned to this vulnerability. (CVE-2022-3542)

    A vulnerability classified as critical was found in Linux Kernel. Affected by this vulnerability is the     function l2cap_reassemble_sdu of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The     manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The associated     identifier of this vulnerability is VDB-211087. (CVE-2022-3564)

    A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this     vulnerability is the function intr_callback of the file drivers/net/usb/r8152.c of the component BPF. The     manipulation leads to logging of excessive data. The attack can be launched remotely. It is recommended to     apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211363.
    (CVE-2022-3594)

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

    arm64: topology: fix possible overflow in amu_fie_setup() (CVE-2022-48657)

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

    nilfs2: fix use-after-free bug of ns_writer on remount (CVE-2022-49834)

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

    can: j1939: j1939_send_one(): fix missing CAN header initialization (CVE-2022-49845)

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

    udf: Fix a slab-out-of-bounds write bug in udf_find_entry() (CVE-2022-49846)

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

    nilfs2: fix deadlock in nilfs_count_free_blocks() (CVE-2022-49850)

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

    net: macvlan: fix memory leaks of macvlan_common_newlink (CVE-2022-49853)

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

    tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header (CVE-2022-49862)

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

    can: af_can: fix NULL pointer dereference in can_rx_register() (CVE-2022-49863)

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

    ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network (CVE-2022-49865)

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

    bnxt_en: Fix possible crash in bnxt_hwrm_set_coal() (CVE-2022-49869)

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

    capabilities: fix undefined behavior in bit shift for CAP_TO_MASK (CVE-2022-49870)

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

    net: tun: Fix memory leaks of napi_get_frags (CVE-2022-49871)

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

    net: gso: fix panic on frag_list with mixed head alloc types (CVE-2022-49872)

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

    bpf: Fix wrong reg type conversion in release_reference() (CVE-2022-49873)

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

    HID: hyperv: fix possible memory leak in mousevsc_probe() (CVE-2022-49874)

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

    bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE (CVE-2022-49875)

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

    bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues (CVE-2022-49877)

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

    ext4: fix BUG_ON() when directory entry has invalid rec_len (CVE-2022-49879)

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

    ext4: fix warning in 'ext4_da_release_space' (CVE-2022-49880)

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

    ACPI: APEI: Fix integer overflow in ghes_estatus_pool_init() (CVE-2022-49885)

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

    capabilities: fix potential memleak on error path from vfs_getxattr_alloc() (CVE-2022-49890)

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

    ftrace: Fix use-after-free for dynamic ftrace_ops (CVE-2022-49892)

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

    fscrypt: stop using keyrings subsystem for fscrypt_master_key (CVE-2022-49899)

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

    ipv6: fix WARNING in ip6_route_net_exit_late() (CVE-2022-49903)

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

    net, neigh: Fix null-ptr-deref in neigh_table_clear() (CVE-2022-49904)

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

    net: mdio: fix undefined behavior in bit shift for __mdiobus_register (CVE-2022-49907)

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

    btrfs: fix ulist leaks in error paths of qgroup self tests (CVE-2022-49912)

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

    btrfs: fix inode list leak during backref walking at find_parent_nodes() (CVE-2022-49913)

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

    btrfs: fix inode list leak during backref walking at resolve_indirect_refs() (CVE-2022-49914)

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

    mISDN: fix possible memory leak in mISDN_register_device() (CVE-2022-49915)

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

    ipvs: fix WARNING in ip_vs_app_net_cleanup() (CVE-2022-49917)

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

    ipvs: fix WARNING in __ip_vs_cleanup_batch() (CVE-2022-49918)

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

    netfilter: nf_tables: release flow rule object from commit path (CVE-2022-49919)

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

    net: sched: Fix use after free in red_enqueue() (CVE-2022-49921)

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

    RDMA/core: Fix null-ptr-deref in ib_core_cleanup() (CVE-2022-49925)

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

    nfs4: Fix kmemleak when allocate slot failed (CVE-2022-49927)

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

    NFSD: fix use-after-free on source server when doing inter-server copy (CVE-2022-50241)

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

    md: Replace snprintf with scnprintf (CVE-2022-50299)

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

    nbd: Fix hung when signal interrupts nbd_start_device_ioctl() (CVE-2022-50314)

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

    ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS (CVE-2022-50315)

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

    jbd2: fix potential use-after-free in jbd2_fc_wait_bufs (CVE-2022-50328)

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

    ext4: fix null-ptr-deref in ext4_write_info (CVE-2022-50344)

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

    net: hns: fix possible memory leak in hnae_ae_register() (CVE-2022-50352)

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

    net: sched: sfb: fix null pointer access issue when sfb_init() fails (CVE-2022-50356)

    A use-after-free flaw was found in qdisc_graft in net/sched/sch_api.c in the Linux Kernel due to a race     problem. This flaw leads to a denial of service issue. (CVE-2023-0590)

    An out-of-bounds memory access flaw was found in the Linux kernel's TUN/TAP device driver functionality in     how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows     a local user to crash or potentially escalate their privileges on the system. (CVE-2023-3812)

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 5.15.79-51.138. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2022-011 advisory.

    A vulnerability classified as problematic has been found in Linux Kernel. This affects the function     fib_nh_match of the file net/ipv4/fib_semantics.c of the component IPv4 Handler. The manipulation leads to     out-of-bounds read. It is possible to initiate the attack remotely. It is recommended to apply a patch to     fix this issue. The identifier VDB-210357 was assigned to this vulnerability. (CVE-2022-3435)

    A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this     vulnerability is the function ipv6_renew_options of the component IPv6 Handler. The manipulation leads to     memory leak. The attack can be launched remotely. It is recommended to apply a patch to fix this issue.
    The identifier VDB-211021 was assigned to this vulnerability. (CVE-2022-3524)

    A vulnerability, which was classified as problematic, has been found in Linux Kernel. This issue affects     the function unix_sock_destructor/unix_release_sock of the file net/unix/af_unix.c of the component BPF.
    The manipulation leads to memory leak. It is recommended to apply a patch to fix this issue. The     associated identifier of this vulnerability is VDB-211043. (CVE-2022-3543)

    A vulnerability classified as critical was found in Linux Kernel. Affected by this vulnerability is the     function l2cap_reassemble_sdu of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The     manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The associated     identifier of this vulnerability is VDB-211087. (CVE-2022-3564)

    A vulnerability has been found in Linux Kernel and classified as problematic. This vulnerability affects     the function l2cap_recv_acldata of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The     manipulation leads to memory leak. It is recommended to apply a patch to fix this issue. VDB-211918 is the     identifier assigned to this vulnerability. (CVE-2022-3619)

    A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this     vulnerability is the function follow_page_pte of the file mm/gup.c of the component BPF. The manipulation     leads to race condition. The attack can be launched remotely. It is recommended to apply a patch to fix     this issue. The identifier VDB-211921 was assigned to this vulnerability. (CVE-2022-3623)

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

    btrfs: zoned: initialize device's zone info for seeding (CVE-2022-49831)

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

    udf: Fix a slab-out-of-bounds write bug in udf_find_entry() (CVE-2022-49846)

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

    btrfs: fix match incorrectly in dev_args_match_device (CVE-2022-49849)

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

    net: macvlan: fix memory leaks of macvlan_common_newlink (CVE-2022-49853)

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

    can: af_can: fix NULL pointer dereference in can_rx_register() (CVE-2022-49863)

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

    ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network (CVE-2022-49865)

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

    capabilities: fix undefined behavior in bit shift for CAP_TO_MASK (CVE-2022-49870)

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

    net: tun: Fix memory leaks of napi_get_frags (CVE-2022-49871)

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

    net: gso: fix panic on frag_list with mixed head alloc types (CVE-2022-49872)

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

    bpf: Fix wrong reg type conversion in release_reference() (CVE-2022-49873)

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

    HID: hyperv: fix possible memory leak in mousevsc_probe() (CVE-2022-49874)

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

    bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE (CVE-2022-49875)

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

    bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues (CVE-2022-49877)

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

    bpf, verifier: Fix memory leak in array reallocation for stack state (CVE-2022-49878)

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

    ext4: fix BUG_ON() when directory entry has invalid rec_len (CVE-2022-49879)

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

    ext4: fix warning in 'ext4_da_release_space' (CVE-2022-49880)

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

    ACPI: APEI: Fix integer overflow in ghes_estatus_pool_init() (CVE-2022-49885)

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

    arm64: entry: avoid kprobe recursion (CVE-2022-49888)

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

    ring-buffer: Check for NULL cpu_buffer in ring_buffer_wake_waiters() (CVE-2022-49889)

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

    capabilities: fix potential memleak on error path from vfs_getxattr_alloc() (CVE-2022-49890)

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

    ftrace: Fix use-after-free for dynamic ftrace_ops (CVE-2022-49892)

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

    btrfs: fix tree mod log mishandling of reallocated nodes (CVE-2022-49898)

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

    fscrypt: stop using keyrings subsystem for fscrypt_master_key (CVE-2022-49899)

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

    block: Fix possible memory leak for rq_wb on add_disk failure (CVE-2022-49902)

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

    ipv6: fix WARNING in ip6_route_net_exit_late() (CVE-2022-49903)

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

    net, neigh: Fix null-ptr-deref in neigh_table_clear() (CVE-2022-49904)

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

    net/smc: Fix possible leaked pernet namespace in smc_init() (CVE-2022-49905)

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

    net: mdio: fix undefined behavior in bit shift for __mdiobus_register (CVE-2022-49907)

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

    netfilter: ipset: enforce documented limit to prevent allocating huge memory (CVE-2022-49911)

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

    btrfs: fix ulist leaks in error paths of qgroup self tests (CVE-2022-49912)

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

    btrfs: fix inode list leak during backref walking at find_parent_nodes() (CVE-2022-49913)

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

    btrfs: fix inode list leak during backref walking at resolve_indirect_refs() (CVE-2022-49914)

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

    mISDN: fix possible memory leak in mISDN_register_device() (CVE-2022-49915)

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

    ipvs: fix WARNING in ip_vs_app_net_cleanup() (CVE-2022-49917)

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

    ipvs: fix WARNING in __ip_vs_cleanup_batch() (CVE-2022-49918)

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

    netfilter: nf_tables: release flow rule object from commit path (CVE-2022-49919)

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

    netfilter: nf_tables: netlink notifier might race to release objects (CVE-2022-49920)

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

    net: sched: Fix use after free in red_enqueue() (CVE-2022-49921)

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

    RDMA/core: Fix null-ptr-deref in ib_core_cleanup() (CVE-2022-49925)

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

    nfs4: Fix kmemleak when allocate slot failed (CVE-2022-49927)

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

    SUNRPC: Fix null-ptr-deref when xps sysfs alloc failed (CVE-2022-49928)

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

    ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS (CVE-2022-50315)

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

    net: sched: sfb: fix null pointer access issue when sfb_init() fails (CVE-2022-50356)

    A use-after-free flaw was found in qdisc_graft in net/sched/sch_api.c in the Linux Kernel due to a race     problem. This flaw leads to a denial of service issue. (CVE-2023-0590)

    An out-of-bounds memory access flaw was found in the Linux kernel's TUN/TAP device driver functionality in     how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows     a local user to crash or potentially escalate their privileges on the system. (CVE-2023-3812)

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	Severity
265653	Linux Distros Unpatched Vulnerability : CVE-2022-50356	Nessus	Misc.	medium
168520	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2022-023 (ALASKERNEL-5.10-2022-023)	Nessus	Amazon Linux Local Security Checks	high
168507	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2022-011 (ALASKERNEL-5.15-2022-011)	Nessus	Amazon Linux Local Security Checks	high

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