In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Cleanup CPU timers before freeing them during exec Commit 55e8c8eb2c7b ("posix-cpu-timers: Store a reference to a pid not a task") started looking up tasks by PID when deleting a CPU timer. When a non-leader thread calls execve, it will switch PIDs with the leader process. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find the task because the timer still points out to the old PID. That means that armed timers won't be disarmed, that is, they won't be removed from the timerqueue_list. exit_itimers will still release their memory, and when that list is later processed, it leads to a use-after-free. Clean up the timers from the de-threaded task before freeing them. This prevents a reported use-after-free.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:02264-1 advisory.

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


    The following security bugs were fixed:

    - CVE-2021-47557: net/sched: sch_ets: do not peek at classes beyond 'nbands' (bsc#1207361 bsc#1225468).
    - CVE-2021-47595: net/sched: sch_ets: do not remove idle classes from the round-robin list (bsc#1207361     bsc#1226552).
    - CVE-2023-52924: netfilter: nf_tables: do not skip expired elements during walk (bsc#1236821).
    - CVE-2023-52925: netfilter: nf_tables: do not fail inserts if duplicate has expired (bsc#1236822).
    - CVE-2024-26808: netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain     (bsc#1222634).
    - CVE-2024-26924: scsi: lpfc: Release hbalock before calling lpfc_worker_wake_up() (bsc#1225820).
    - CVE-2024-27397: kabi: place tstamp needed for nftables set in a hole (bsc#1224095).
    - CVE-2024-36978: net: sched: sch_multiq: fix possible OOB write in multiq_tune() (bsc#1226514).
    - CVE-2024-46800: sch/netem: fix use after free in netem_dequeue (bsc#1230827).
    - CVE-2024-53125: bpf: sync_linked_regs() must preserve subreg_def (bsc#1234156).
    - CVE-2024-53141: netfilter: ipset: add missing range check in bitmap_ip_uadt (bsc#1234381).
    - CVE-2024-53197: ALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devices     (bsc#1235464).
    - CVE-2024-56770: sch/netem: fix use after free in netem_dequeue (bsc#1235637).
    - CVE-2025-21700: net: sched: Disallow replacing of child qdisc from one parent to another (bsc#1237159).
    - CVE-2025-21702: pfifo_tail_enqueue: Drop new packet when sch->limit == 0 (bsc#1237312).
    - CVE-2025-21703: netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() (bsc#1237313).
    - CVE-2025-21756: vsock: Orphan socket after transport release (bsc#1238876).
    - CVE-2025-23141: KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses     (bsc#1242782).
    - CVE-2025-37752: net_sched: sch_sfq: move the limit validation (bsc#1242504).
    - CVE-2025-37823: net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too (bsc#1242924).
    - CVE-2025-37890: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc     (bsc#1243330).
    - CVE-2025-37997: netfilter: ipset: fix region locking in hash types (bsc#1243832).
    - CVE-2025-38000: sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue() (bsc#1244277).
    - CVE-2025-38001: net_sched: hfsc: Address reentrant enqueue adding class to eltree twice (bsc#1244234).
    - CVE-2025-38014: dmaengine: idxd: Refactor remove call with idxd_cleanup() helper (bsc#1244732).
    - CVE-2025-38060: bpf: abort verification if env->cur_state->loop_entry != NULL (bsc#1245155).
    - CVE-2025-38083: net_sched: prio: fix a race in prio_tune() (bsc#1245183).


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 version of kernel installed on the remote host is prior to 5.15.59-33.133. It is, therefore, affected by a vulnerability as referenced in the ALAS2KERNEL-5.15-2025-083 advisory.

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

    posix-cpu-timers: Cleanup CPU timers before freeing them during exec (CVE-2022-50095)

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

Note that Nessus has not tested for this issue 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 5.10.144-127.601. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2022-020 advisory.

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

    i2c: Fix a potential use after free

    Free the adap structure only after we are done using it.This patch just moves the put_device() down a bit     to avoid theuse after free.

    [wsa: added comment to the code, added Fixes tag] (CVE-2019-25162)

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

    tun: avoid double free in tun_free_netdev (CVE-2021-47082)

    A use-after-free flaw was found in the Linux kernel's Atheros wireless adapter driver in the way a user     forces the ath9k_htc_wait_for_target function to fail with some input messages. This flaw allows a local     user to crash or potentially escalate their privileges on the system. (CVE-2022-1679)

    A flaw was found in the Linux kernel's KVM when attempting to set a SynIC IRQ. This issue makes it     possible for a misbehaving VMM to write to SYNIC/STIMER MSRs, causing a NULL pointer dereference. This     flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel     oops condition that results in a denial of service. (CVE-2022-2153)

    A use-after-free flaw was found in the Linux kernel's POSIX CPU timers functionality in the way a user     creates and then deletes the timer in the non-leader thread of the program. This flaw allows a local user     to crash or potentially escalate their privileges on the system. (CVE-2022-2585)

    It was discovered that a nft object or expression could reference a nft set on a different nft table,     leading to a use-after-free once that table was deleted. (CVE-2022-2586)

    A use-after-free flaw was found in route4_change in the net/sched/cls_route.c filter implementation in the     Linux kernel. This flaw allows a local user to crash the system and possibly lead to a local privilege     escalation problem. (CVE-2022-2588)

    Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow     an authorized user to potentially enable information disclosure via local access. (CVE-2022-26373)

    An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and     incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted     IRC with nf_conntrack_irc configured. (CVE-2022-2663)

    An out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the     bpf_tail_call function with a key larger than the max_entries of the map. This flaw allows a local user to     gain unauthorized access to data. (CVE-2022-2905)

    A race condition was found in the Linux kernel's IP framework for transforming packets (XFRM subsystem)     when multiple calls to xfrm_probe_algs occurred simultaneously. This flaw could allow a local attacker to     potentially trigger an out-of-bounds write or leak kernel heap memory by performing an out-of-bounds read     and copying it into a socket. (CVE-2022-3028)

    A use-after-free flaw was found in io_uring in the Linux kernel. This flaw allows a local user to trigger     the issue if a signalfd or binder fd is polled with the io_uring poll due to a lack of io_uring POLLFREE     handling. (CVE-2022-3176)

    A vulnerability was found in Linux Kernel. It has been classified as critical. This affects the function     devlink_param_set/devlink_param_get of the file net/core/devlink.c of the component IPsec. The     manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier     VDB-211929 was assigned to this vulnerability. (CVE-2022-3625)

    An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race     condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale     TLB entries. This only occurs in situations with VM_PFNMAP VMAs. (CVE-2022-39188)

    An issue was discovered in net/netfilter/nf_tables_api.c in the Linux kernel before 5.19.6. A denial of     service can occur upon binding to an already bound chain. (CVE-2022-39190)

    A race condition in the Linux kernel's EFI capsule loader driver was found in the way it handled write and     flush operations on the device node of the EFI capsule. A local user could potentially use this flaw to     crash the system. (CVE-2022-40307)

    mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is     not held during a PUD move. (CVE-2022-41222)

    A double-free flaw was found in the Linux kernel's TUN/TAP device driver functionality in how a user     registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This flaw     allows a local user to crash or potentially escalate their privileges on the system. (CVE-2022-4744)

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

    IB/core: Fix a nested dead lock as part of ODP flow (CVE-2022-48675)

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

    nvme-tcp: fix UAF when detecting digest errors (CVE-2022-48686)

    In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: fix out-of-bounds read when     setting HMAC data. The SRv6 layer allows defining HMAC data that can later be used to sign IPv6 Segment     Routing Headers. This configuration is realised via netlink through four attributes: SEG6_ATTR_HMACKEYID,     SEG6_ATTR_SECRET, SEG6_ATTR_SECRETLEN and SEG6_ATTR_ALGID. (CVE-2022-48687)

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

    i40e: Fix kernel crash during module removal (CVE-2022-48688)

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

    netfilter: nf_tables: clean up hook list when offload flags check fails (CVE-2022-48691)

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

    scsi: mpt3sas: Fix use-after-free warning (CVE-2022-48695)

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

    nvmet: fix a use-after-free (CVE-2022-48697)

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

    drm/radeon: add a force flush to delay work when radeon (CVE-2022-48704)

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

    tcp: Fix data-races around sysctl_tcp_l3mdev_accept. (CVE-2022-49599)

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

    arm64: cacheinfo: Fix incorrect assignment of signed error value to unsigned fw_level (CVE-2022-49964)

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

    ftrace: Fix NULL pointer dereference in is_ftrace_trampoline when ftrace is dead (CVE-2022-49977)

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

    HID: steam: Prevent NULL pointer dereference in steam_{recv,send}_report (CVE-2022-49984)

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

    scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq (CVE-2022-49986)

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

    md: call __md_stop_writes in md_stop (CVE-2022-49987)

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

    loop: Check for overflow while configuring loop (CVE-2022-49993)

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

    rxrpc: Fix locking in rxrpc's sendmsg (CVE-2022-49998)

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

    xfrm: policy: fix metadata dst->dev xmit null pointer dereference (CVE-2022-50004)

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

    kprobes: don't call disarm_kprobe() for disabled kprobes (CVE-2022-50008)

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

    scsi: lpfc: Prevent buffer overflow crashes in debugfs with malformed user input (CVE-2022-50030)

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

    NFSv4/pnfs: Fix a use-after-free bug in open (CVE-2022-50072)

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

    ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h (CVE-2022-50083)

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

    dm thin: fix use-after-free crash in dm_sm_register_threshold_callback (CVE-2022-50092)

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

    posix-cpu-timers: Cleanup CPU timers before freeing them during exec (CVE-2022-50095)

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

    video: fbdev: s3fb: Check the size of screen before memset_io() (CVE-2022-50097)

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

    sched, cpuset: Fix dl_cpu_busy() panic due to empty cs->cpus_allowed (CVE-2022-50103)

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

    jbd2: fix assertion 'jh->b_frozen_data == NULL' failure when journal aborted (CVE-2022-50126)

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

    RDMA/rxe: Fix error unwind in rxe_create_qp() (CVE-2022-50127)

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

    driver core: fix potential deadlock in __driver_attach (CVE-2022-50149)

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

    virtio-gpu: fix a missing check to avoid NULL dereference (CVE-2022-50181)

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

    drm/radeon: fix potential buffer overflow in ni_set_mc_special_registers() (CVE-2022-50185)

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

    selinux: Add boundary check in put_entry() (CVE-2022-50200)

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

    PM: hibernate: defer device probing when resuming from hibernation (CVE-2022-50202)

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

    ext2: Add more validity checks for inode counts (CVE-2022-50205)

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

    md-raid10: fix KASAN warning (CVE-2022-50211)

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

    netfilter: nf_tables: do not allow CHAIN_ID to refer to another table (CVE-2022-50212)

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

    usbnet: Fix linkwatch use-after-free on disconnect (CVE-2022-50220)

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

    KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 (CVE-2022-50228)

    In nf_tables_updtable, if nf_tables_table_enable returns an error, nft_trans_destroy is called to free the     transaction object. nft_trans_destroy() calls list_del(), but the transaction was never placed on a list
    -- the list head is all zeroes, this results in a NULL pointer dereference. (CVE-2023-1095)

    The upstream advisory describes this issue as follows:

    This vulnerability allows local attackers to disclose sensitive information on affected installations of     the Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target     system in order to exploit this vulnerability.

    The specific flaw exists within the processing of seg6 attributes. The issue results from the lack of     proper validation of user-supplied data, which can result in a read past the end of an allocated buffer.
    An attacker can leverage this in conjunction with other vulnerabilties to escalate privileges and execute     arbitrary code in the context of the kernel. (CVE-2023-2860)

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
241963	SUSE SLES15 Security Update : kernel (SUSE-SU-2025:02264-1)	Nessus	SuSE Local Security Checks	high
241787	Amazon Linux 2 : kernel (ALASKERNEL-5.15-2025-083)	Nessus	Amazon Linux Local Security Checks	medium
166124	Amazon Linux 2 : kernel (ALASKERNEL-5.10-2022-020)	Nessus	Amazon Linux Local Security Checks	high

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