In the Linux kernel, the following vulnerability has been resolved: macsec: fix UAF bug for real_dev Create a new macsec device but not get reference to real_dev. That can not ensure that real_dev is freed after macsec. That will trigger the UAF bug for real_dev as following: ================================================================== BUG: KASAN: use-after-free in macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 Call Trace: ... macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 dev_get_iflink+0x73/0xe0 net/core/dev.c:637 default_operstate net/core/link_watch.c:42 [inline] rfc2863_policy+0x233/0x2d0 net/core/link_watch.c:54 linkwatch_do_dev+0x2a/0x150 net/core/link_watch.c:161 Allocated by task 22209: ... alloc_netdev_mqs+0x98/0x1100 net/core/dev.c:10549 rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3235 veth_newlink+0x20e/0xa90 drivers/net/veth.c:1748 Freed by task 8: ... kfree+0xd6/0x4d0 mm/slub.c:4552 kvfree+0x42/0x50 mm/util.c:615 device_release+0x9f/0x240 drivers/base/core.c:2229 kobject_cleanup lib/kobject.c:673 [inline] kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:721 netdev_run_todo+0x72e/0x10b0 net/core/dev.c:10327 After commit faab39f63c1f ("net: allow out-of-order netdev unregistration") and commit e5f80fcf869a ("ipv6: give an IPv6 dev to blackhole_netdev"), we can add dev_hold_track() in macsec_dev_init() and dev_put_track() in macsec_free_netdev() to fix the problem.

The version of kernel installed on the remote host is prior to 4.14.355-196.618. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2025-1970 advisory.

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

    block, bfq: don't move oom_bfqq (CVE-2022-49179)

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

    macsec: fix UAF bug for real_dev (CVE-2022-49390)

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

    block: Fix handling of offline queues in blk_mq_alloc_request_hctx() (CVE-2022-49720)

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

    ext4: aovid use-after-free in ext4_ext_insert_extent() (CVE-2024-49883)

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

    slip: make slhc_remember() more robust against malicious packets (CVE-2024-50033)

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

    net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT (CVE-2024-53057)

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

    hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer (CVE-2024-53103)

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

    netfilter: x_tables: fix LED ID check in led_tg_check() (CVE-2024-56650)

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

    net: defer final 'struct net' free in netns dismantle (CVE-2024-56658)

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

    pps: Fix a use-after-free (CVE-2024-57979)

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

    nbd: don't allow reconnect after disconnect (CVE-2025-21731)

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

    btrfs: fix use-after-free when attempting to join an aborted transaction (CVE-2025-21753)

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

    ndisc: extend RCU protection in ndisc_send_skb() (CVE-2025-21760)

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

    arp: use RCU protection in arp_xmit() (CVE-2025-21762)

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

    ndisc: use RCU protection in ndisc_alloc_skb() (CVE-2025-21764)

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 5.10.235-227.919. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2025-088 advisory.

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

    macsec: fix UAF bug for real_dev (CVE-2022-49390)

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

    Squashfs: check the inode number is not the invalid value of zero (CVE-2024-26982)

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

    smb: client: fix UAF in smb2_reconnect_server() (CVE-2024-35870)

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

    rdma/cxgb4: Prevent potential integer overflow on 32bit (CVE-2024-57973)

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

    memcg: fix soft lockup in the OOM process (CVE-2024-57977)

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

    pps: Fix a use-after-free (CVE-2024-57979)

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

    rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read (CVE-2024-58069)

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

    KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() (CVE-2024-58083)

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

    net: sched: Disallow replacing of child qdisc from one parent to another (CVE-2025-21700)

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

    ipmr: do not call mr_mfc_uses_dev() for unres entries (CVE-2025-21719)

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

    nilfs2: handle errors that nilfs_prepare_chunk() may return (CVE-2025-21721)

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

    nilfs2: do not force clear folio if buffer is referenced (CVE-2025-21722)

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

    padata: avoid UAF for reorder_work (CVE-2025-21726)

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

    padata: fix UAF in padata_reorder (CVE-2025-21727)

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

    bpf: Send signals asynchronously if !preemptible (CVE-2025-21728)

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

    nbd: don't allow reconnect after disconnect (CVE-2025-21731)

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

    btrfs: fix use-after-free when attempting to join an aborted transaction (CVE-2025-21753)

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

    vsock: Keep the binding until socket destruction (CVE-2025-21756)

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

    ndisc: extend RCU protection in ndisc_send_skb() (CVE-2025-21760)

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

    openvswitch: use RCU protection in ovs_vport_cmd_fill_info() (CVE-2025-21761)

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

    arp: use RCU protection in arp_xmit() (CVE-2025-21762)

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

    neighbour: use RCU protection in __neigh_notify() (CVE-2025-21763)

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

    ndisc: use RCU protection in ndisc_alloc_skb() (CVE-2025-21764)

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

    clocksource: Use migrate_disable() to avoid calling get_random_u32() in atomic context (CVE-2025-21767)

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

    arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array (CVE-2025-21785)

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

    team: better TEAM_OPTION_TYPE_STRING validation (CVE-2025-21787)

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

    vrf: use RCU protection in l3mdev_l3_out() (CVE-2025-21791)

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

    NFSD: fix hang in nfsd4_shutdown_callback (CVE-2025-21795)

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

    nfsd: clear acl_access/acl_default after releasing them (CVE-2025-21796)

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

    nilfs2: protect access to buffers with no active references (CVE-2025-21811)

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

    geneve: Fix use-after-free in geneve_find_dev(). (CVE-2025-21858)

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

    vlan: enforce underlying device type (CVE-2025-21920)

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

    net: gso: fix ownership in __udp_gso_segment (CVE-2025-21926)

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

    HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() (CVE-2025-21928)

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 4.14.355-276.618. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2025-2826 advisory.

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

    block, bfq: don't move oom_bfqq (CVE-2022-49179)

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

    macsec: fix UAF bug for real_dev (CVE-2022-49390)

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

    block: Fix handling of offline queues in blk_mq_alloc_request_hctx() (CVE-2022-49720)

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

    ext4: aovid use-after-free in ext4_ext_insert_extent() (CVE-2024-49883)

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

    slip: make slhc_remember() more robust against malicious packets (CVE-2024-50033)

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

    net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT (CVE-2024-53057)

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

    hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer (CVE-2024-53103)

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

    netfilter: x_tables: fix LED ID check in led_tg_check() (CVE-2024-56650)

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

    net: defer final 'struct net' free in netns dismantle (CVE-2024-56658)

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

    pps: Fix a use-after-free (CVE-2024-57979)

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

    nbd: don't allow reconnect after disconnect (CVE-2025-21731)

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

    btrfs: fix use-after-free when attempting to join an aborted transaction (CVE-2025-21753)

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

    ndisc: extend RCU protection in ndisc_send_skb() (CVE-2025-21760)

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

    arp: use RCU protection in arp_xmit() (CVE-2025-21762)

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

    ndisc: use RCU protection in ndisc_alloc_skb() (CVE-2025-21764)

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 remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:1241-1 advisory.

    The SUSE Linux Enterprise 15 SP5 kernel was updated to receive various security bugfixes.

    The following security bugs were fixed:

    - CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
    - CVE-2022-49465: blk-throttle: Set BIO_THROTTLED when bio has been throttled (bsc#1238919).
    - CVE-2022-49739: gfs2: Always check inode size of inline inodes (bsc#1240207).
    - CVE-2023-52935: mm/khugepaged: fix ->anon_vma race (bsc#1240276).
    - CVE-2024-53124: net: fix data-races around sk->sk_forward_alloc (bsc#1234074).
    - CVE-2024-53176: smb: During unmount, ensure all cached dir instances drop their dentry (bsc#1234894).
    - CVE-2024-53178: smb: Do not leak cfid when reconnect races with open_cached_dir (bsc#1234895).
    - CVE-2024-56651: can: hi311x: hi3110_can_ist(): fix potential use-after-free (bsc#1235528).
    - CVE-2024-57996: net_sched: sch_sfq: do not allow 1 packet limit (bsc#1239076).
    - CVE-2024-58013: Bluetooth: MGMT: Fix slab-use-after-free Read in mgmt_remove_adv_monitor_sync     (bsc#1239095).
    - CVE-2024-58014: wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() (bsc#1239109).
    - CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
    - CVE-2025-21718: net: rose: fix timer races against user threads (bsc#1239073).
    - CVE-2025-21772: partitions: mac: fix handling of bogus partition table (bsc#1238911).
    - CVE-2025-21780: drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() (bsc#1239115).


Tenable has extracted the preceding description block directly from the SUSE 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: macsec: fix UAF bug for real_dev     Create a new macsec device but not get reference to real_dev. That can not ensure that real_dev is freed     after macsec. That will trigger the UAF bug for real_dev as following:
    ================================================================== BUG: KASAN: use-after-free in     macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 Call Trace: ... macsec_get_iflink+0x5f/0x70     drivers/net/macsec.c:3662 dev_get_iflink+0x73/0xe0 net/core/dev.c:637 default_operstate     net/core/link_watch.c:42 [inline] rfc2863_policy+0x233/0x2d0 net/core/link_watch.c:54     linkwatch_do_dev+0x2a/0x150 net/core/link_watch.c:161 Allocated by task 22209: ...
    alloc_netdev_mqs+0x98/0x1100 net/core/dev.c:10549 rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3235     veth_newlink+0x20e/0xa90 drivers/net/veth.c:1748 Freed by task 8: ... kfree+0xd6/0x4d0 mm/slub.c:4552     kvfree+0x42/0x50 mm/util.c:615 device_release+0x9f/0x240 drivers/base/core.c:2229 kobject_cleanup     lib/kobject.c:673 [inline] kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65     [inline] kobject_put+0x1c8/0x540 lib/kobject.c:721 netdev_run_todo+0x72e/0x10b0 net/core/dev.c:10327 After     commit faab39f63c1f (net: allow out-of-order netdev unregistration) and commit e5f80fcf869a (ipv6: give     an IPv6 dev to blackhole_netdev), we can add dev_hold_track() in macsec_dev_init() and dev_put_track() in     macsec_free_netdev() to fix the problem. (CVE-2022-49390)

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

ID	Name	Product	Family	Severity
234707	Amazon Linux AMI : kernel (ALAS-2025-1970)	Nessus	Amazon Linux Local Security Checks	high
234528	Amazon Linux 2 : kernel (ALASKERNEL-5.10-2025-088)	Nessus	Amazon Linux Local Security Checks	high
234515	Amazon Linux 2 : kernel (ALAS-2025-2826)	Nessus	Amazon Linux Local Security Checks	high
234407	SUSE SLES15 Security Update : kernel (SUSE-SU-2025:1241-1)	Nessus	SuSE Local Security Checks	high
225410	Linux Distros Unpatched Vulnerability : CVE-2022-49390	Nessus	Misc.	high

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CVE-2022-49390

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Tenable Plugins

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