The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1787305050 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: l2tp: prevent possible tunnel refcount     underflow When a session is created, it sets a backpointer to its tunnel. When the session refcount drops     to 0, l2tp_session_free drops the tunnel refcount if session->tunnel is non-NULL. However, session->tunnel     is set in l2tp_session_create, before the tunnel refcount is incremented by l2tp_session_register, which     leaves a small window where session->tunnel is non-NULL when the tunnel refcount hasn't been bumped.
    Moving the assignment to l2tp_session_register is trivial but l2tp_session_create calls     l2tp_session_set_header_len which uses session->tunnel to get the tunnel's encap. Add an encap arg to     l2tp_session_set_header_len to avoid using session->tunnel. If l2tpv3 sessions have colliding IDs, it is     possible for l2tp_v3_session_get to race with l2tp_session_register and fetch a session which doesn't yet     have session->tunnel set. Add a check for this case. (CVE-2024-49940)

  - In the Linux kernel, the following vulnerability has been resolved: mm/thp: fix deferred split unqueue     naming and locking Recent changes are putting more pressure on THP deferred split queues: under load     revealing long-standing races, causing list_del corruptions, Bad page states and worse (I keep BUGs in     both of those, so usually don't get to see how badly they end up without). The relevant recent changes     being 6.8's mTHP, 6.10's mTHP swapout, and 6.12's mTHP swapin, improved swap allocation, and underused THP     splitting. Before fixing locking: rename misleading folio_undo_large_rmappable(), which does not undo     large_rmappable, to folio_unqueue_deferred_split(), which is what it does. But that and its out-of-line
    __callee are mm internals of very limited usability: add comment and WARN_ON_ONCEs to check usage; and     return a bool to say if a deferred split was unqueued, which can then be used in WARN_ON_ONCEs around     safety checks (sparing callers the arcane conditionals in __folio_unqueue_deferred_split()). Just omit the     folio_unqueue_deferred_split() from free_unref_folios(), all of whose callers now call it beforehand (and     if any forget then bad_page() will tell) - except for its caller put_pages_list(), which itself no longer     has any callers (and will be deleted separately). Swapout: mem_cgroup_swapout() has been resetting     folio->memcg_data 0 without checking and unqueueing a THP folio from deferred split list; which is     unfortunate, since the split_queue_lock depends on the memcg (when memcg is enabled); so swapout has been     unqueueing such THPs later, when freeing the folio, using the pgdat's lock instead: potentially corrupting     the memcg's list. __remove_mapping() has frozen refcount to 0 here, so no problem with calling     folio_unqueue_deferred_split() before resetting memcg_data. That goes back to 5.4 commit 87eaceb3faa5     (mm: thp: make deferred split shrinker memcg aware): which included a check on swapcache before adding     to deferred queue, but no check on deferred queue before adding THP to swapcache. That worked fine with     the usual sequence of events in reclaim (though there were a couple of rare ways in which a THP on     deferred queue could have been swapped out), but 6.12 commit dafff3f4c850 (mm: split underused THPs)     avoids splitting underused THPs in reclaim, which makes swapcache THPs on deferred queue commonplace. Keep     the check on swapcache before adding to deferred queue? Yes: it is no longer essential, but preserves the     existing behaviour, and is likely to be a worthwhile optimization (vmstat showed much more traffic on the     queue under swapping load if the check was removed); update its comment. Memcg-v1 move (deprecated):
    mem_cgroup_move_account() has been changing folio->memcg_data without checking and unqueueing a THP folio     from the deferred list, sometimes corrupting from memcg's list, like swapout. Refcount is non-zero here,     so folio_unqueue_deferred_split() can only be used in a WARN_ON_ONCE to validate the fix, which must be     done earlier: mem_cgroup_move_charge_pte_range() first try to split the THP (splitting of course     unqueues), or skip it if that fails. Not ideal, but moving charge has been requested, and khugepaged     should repair the THP later: nobody wants new custom unqueueing code just for this deprecated case. The     87eaceb3faa5 commit did have the code to move from one deferred list to another (but was not conscious of     its unsafety while refcount non-0); but that was removed by 5.6 commit fac0516b5534 (mm: thp: don't need     care deferred split queue in memcg charge move path), which argued that the existence of a PMD mapping     guarantees that the THP cannot be on a deferred list. As above, false in rare cases, and now commonly     false. Backport to 6.11 should be straightforward. Earlier backports must take care that other
    _deferred_list fixes and dependencies are included. There is not a strong case for backports, but they can     fix cornercases. (CVE-2024-53079)

  - In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: reallocate buf lists on     upgrade IORING_REGISTER_PBUF_RING can reuse an old struct io_buffer_list if it was created for legacy     selected buffer and has been emptied. It violates the requirement that most of the field should stay     stable after publish. Always reallocate it instead. (CVE-2025-21836)

  - In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Add sanity checks on     rdev validity There is a possibility that ulp_irq_stop and ulp_irq_start callbacks will be called when the     device is in detached state. This can cause a crash due to NULL pointer dereference as the rdev is already     freed. (CVE-2025-21901)

  - In the Linux kernel, the following vulnerability has been resolved: cpufreq/amd-pstate: Add missing NULL     ptr check in amd_pstate_update Check if policy is NULL before dereferencing it in amd_pstate_update.
    (CVE-2025-23137)

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

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1791741836 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: vhost: fix hung thread due to     erroneous iotlb entries In vhost_iotlb_add_range_ctx(), range size can overflow to 0 when start is 0 and     last is ULONG_MAX. One instance where it can happen is when userspace sends an IOTLB message with     iova=size=uaddr=0 (vhost_process_iotlb_msg). So, an entry with size = 0, start = 0, last = ULONG_MAX ends     up in the iotlb. Next time a packet is sent, iotlb_access_ok() loops indefinitely due to that erroneous     entry. Call Trace: <TASK> iotlb_access_ok+0x21b/0x3e0 drivers/vhost/vhost.c:1340     vq_meta_prefetch+0xbc/0x280 drivers/vhost/vhost.c:1366 vhost_transport_do_send_pkt+0xe0/0xfd0     drivers/vhost/vsock.c:104 vhost_worker+0x23d/0x3d0 drivers/vhost/vhost.c:372 kthread+0x2e9/0x3a0     kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> Reported by syzbot at:
    https://syzkaller.appspot.com/bug?extid=0abd373e2e50d704db87 To fix this, do two things: 1. Return -EINVAL     in vhost_chr_write_iter() when userspace asks to map a range with size 0. 2. Fix     vhost_iotlb_add_range_ctx() to handle the range [0, ULONG_MAX] by splitting it into two entries.
    (CVE-2022-48862)

  - In the Linux kernel, the following vulnerability has been resolved: net: hns3: add vlan list lock to     protect vlan list When adding port base VLAN, vf VLAN need to remove from HW and modify the vlan state in     vf VLAN list as false. If the periodicity task is freeing the same node, it may cause use after free     error. This patch adds a vlan list lock to protect the vlan list. (CVE-2022-49182)

  - In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd: Fix crash due to race     between amd_pmu_enable_all, perf NMI and throttling amd_pmu_enable_all() does: if (!test_bit(idx,     cpuc->active_mask)) continue; amd_pmu_enable_event(cpuc->events[idx]); A perf NMI of another event can     come between these two steps. Perf NMI handler internally disables and enables _all_ events, including the     one which nmi-intercepted amd_pmu_enable_all() was in process of enabling. If that unintentionally enabled     event has very low sampling period and causes immediate successive NMI, causing the event to be throttled,     cpuc->events[idx] and cpuc->active_mask gets cleared by x86_pmu_stop(). This will result in     amd_pmu_enable_event() getting called with event=NULL when amd_pmu_enable_all() resumes after handling the     NMIs. This causes a kernel crash: BUG: kernel NULL pointer dereference, address: 0000000000000198 #PF:
    supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page [...] Call Trace: <TASK>     amd_pmu_enable_all+0x68/0xb0 ctx_resched+0xd9/0x150 event_function+0xb8/0x130 ?     hrtimer_start_range_ns+0x141/0x4a0 ? perf_duration_warn+0x30/0x30 remote_function+0x4d/0x60
    __flush_smp_call_function_queue+0xc4/0x500 flush_smp_call_function_queue+0x11d/0x1b0 do_idle+0x18f/0x2d0     cpu_startup_entry+0x19/0x20 start_secondary+0x121/0x160 secondary_startup_64_no_verify+0xe5/0xeb </TASK>     amd_pmu_disable_all()/amd_pmu_enable_all() calls inside perf NMI handler were recently added as part of     BRS enablement but I'm not sure whether we really need them. We can just disable BRS in the beginning and     enable it back while returning from NMI. This will solve the issue by not enabling those events whose     active_masks are set but are not yet enabled in hw pmu. (CVE-2022-49781)

  - In the Linux kernel, the following vulnerability has been resolved: blk-iolatency: Fix memory leak on     add_disk() failures When a gendisk is successfully initialized but add_disk() fails such as when a loop     device has invalid number of minor device numbers specified, blkcg_init_disk() is called during init and     then blkcg_exit_disk() during error handling. Unfortunately, iolatency gets initialized in the former but     doesn't get cleaned up in the latter. This is because, in non-error cases, the cleanup is performed by     del_gendisk() calling rq_qos_exit(), the assumption being that rq_qos policies, iolatency being one of     them, can only be activated once the disk is fully registered and visible. That assumption is true for wbt     and iocost, but not so for iolatency as it gets initialized before add_disk() is called. It is desirable     to lazy-init rq_qos policies because they are optional features and add to hot path overhead once     initialized - each IO has to walk all the registered rq_qos policies. So, we want to switch iolatency to     lazy init too. However, that's a bigger change. As a fix for the immediate problem, let's just add an     extra call to rq_qos_exit() in blkcg_exit_disk(). This is safe because duplicate calls to rq_qos_exit()     become noop's. (CVE-2022-50550)

  - In the Linux kernel, the following vulnerability has been resolved: i40e: Do not allow untrusted VF to     remove administratively set MAC Currently when PF administratively sets VF's MAC address and the VF is put     down (VF tries to delete all MACs) then the MAC is removed from MAC filters and primary VF MAC is zeroed.
    Do not allow untrusted VF to remove primary MAC when it was set administratively by PF. Reproducer: 1)     Create VF 2) Set VF interface up 3) Administratively set the VF's MAC 4) Put VF interface down [root@host     ~]# echo 1 > /sys/class/net/enp2s0f0/device/sriov_numvfs [root@host ~]# ip link set enp2s0f0v0 up     [root@host ~]# ip link set enp2s0f0 vf 0 mac fe:6c:b5:da:c7:7d [root@host ~]# ip link show enp2s0f0 23:
    enp2s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen     1000 link/ether 3c:ec:ef:b7:dd:04 brd ff:ff:ff:ff:ff:ff vf 0 link/ether fe:6c:b5:da:c7:7d brd     ff:ff:ff:ff:ff:ff, spoof checking on, link-state auto, trust off [root@host ~]# ip link set enp2s0f0v0     down [root@host ~]# ip link show enp2s0f0 23: enp2s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc     mq state UP mode DEFAULT group default qlen 1000 link/ether 3c:ec:ef:b7:dd:04 brd ff:ff:ff:ff:ff:ff vf 0     link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff, spoof checking on, link-state auto, trust off     (CVE-2024-26830)

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
352240	Rocky Linux 9.6 [TuxCare] Security Update: kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1787305050)	Nessus	Rocky Linux Local Security Checks	2026/9/30	2026/9/30	high
364688	AlmaLinux 9.2 [TuxCare] Security Update: bpftool / kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1791741836)	Nessus	Alma Linux Local Security Checks	2026/10/12	2026/10/28	critical

检测

插件搜索

high

critical