In the Linux kernel, the following vulnerability has been resolved: sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIE_ECHO restores fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM length, HMAC list, or CHUNKS list can then reach association consumers with lengths or identifiers that were never validated against the local backing arrays. A forged RANDOM length can cause out-of-bounds reads during key-vector construction. A forged HMAC identifier also caused a 32-byte write past a zero-length AUTH chunk, providing a primitive for a local privilege escalation chain. Validate the cookie's RANDOM, HMACS, and CHUNKS parameters at the cookie trust boundary before copying them into the association. Reject invalid types, malformed lengths, unsupported HMAC identifiers, HMAC lists without SHA1, and forbidden chunk ids.

ubuntu_linux USN-8886-1: Ubuntu 24.04 LTS / Ubuntu Pro Realtime 24.04 LTS : Linux kernel (NVIDIA Tegra) vulnerabilities (USN-8886-1)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1791800936 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: kunit: Fix potential null dereference     in kunit_device_driver_test() kunit_kzalloc() may return a NULL pointer, dereferencing it without NULL     check may lead to NULL dereference. Add a NULL check for test_state. (CVE-2024-56773)

  - In the Linux kernel, the following vulnerability has been resolved: arm64: ptrace: fix partial SETREGSET     for NT_ARM_FPMR Currently fpmr_set() doesn't initialize the temporary 'fpmr' variable, and a SETREGSET     call with a length of zero will leave this uninitialized. Consequently an arbitrary value will be written     back to target->thread.uw.fpmr, potentially leaking up to 64 bits of memory from the kernel stack. The     read is limited to a specific slot on the stack, and the issue does not provide a write mechanism. Fix     this by initializing the temporary value before copying the regset from userspace, as for other regsets     (e.g. NT_PRSTATUS, NT_PRFPREG, NT_ARM_SYSTEM_CALL). In the case of a zero-length write, the existing     contents of FPMR will be retained. Before this patch: | # ./fpmr-test | Attempting to write     NT_ARM_FPMR::fpmr = 0x900d900d900d900d | SETREGSET(nt=0x40e, len=8) wrote 8 bytes | | Attempting to read     NT_ARM_FPMR::fpmr | GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr = 0x900d900d900d900d     | | Attempting to write NT_ARM_FPMR (zero length) | SETREGSET(nt=0x40e, len=0) wrote 0 bytes | |     Attempting to read NT_ARM_FPMR::fpmr | GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr =     0xffff800083963d50 After this patch: | # ./fpmr-test | Attempting to write NT_ARM_FPMR::fpmr =     0x900d900d900d900d | SETREGSET(nt=0x40e, len=8) wrote 8 bytes | | Attempting to read NT_ARM_FPMR::fpmr |     GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr = 0x900d900d900d900d | | Attempting to     write NT_ARM_FPMR (zero length) | SETREGSET(nt=0x40e, len=0) wrote 0 bytes | | Attempting to read     NT_ARM_FPMR::fpmr | GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr = 0x900d900d900d900d     (CVE-2024-57878)

  - In the Linux kernel, the following vulnerability has been resolved: mptcp: fix 'scheduling while atomic'     in mptcp_pm_nl_append_new_local_addr If multiple connection requests attempt to create an implicit mptcp     endpoint in parallel, more than one caller may end up in mptcp_pm_nl_append_new_local_addr because none     found the address in local_addr_list during their call to mptcp_pm_nl_get_local_id. In this case, the     concurrent new_local_addr calls may delete the address entry created by the previous caller. These deletes     use synchronize_rcu, but this is not permitted in some of the contexts where this function may be called.
    During packet recv, the caller may be in a rcu read critical section and have preemption disabled. An     example stack: BUG: scheduling while atomic: swapper/2/0/0x00000302 Call Trace: <IRQ> dump_stack_lvl     (lib/dump_stack.c:117 (discriminator 1)) dump_stack (lib/dump_stack.c:124) __schedule_bug     (kernel/sched/core.c:5943) schedule_debug.constprop.0 (arch/x86/include/asm/preempt.h:33     kernel/sched/core.c:5970) __schedule (arch/x86/include/asm/jump_label.h:27 include/linux/jump_label.h:207     kernel/sched/features.h:29 kernel/sched/core.c:6621) schedule (arch/x86/include/asm/preempt.h:84     kernel/sched/core.c:6804 kernel/sched/core.c:6818) schedule_timeout (kernel/time/timer.c:2160)     wait_for_completion (kernel/sched/completion.c:96 kernel/sched/completion.c:116     kernel/sched/completion.c:127 kernel/sched/completion.c:148) __wait_rcu_gp (include/linux/rcupdate.h:311     kernel/rcu/update.c:444) synchronize_rcu (kernel/rcu/tree.c:3609) mptcp_pm_nl_append_new_local_addr     (net/mptcp/pm_netlink.c:966 net/mptcp/pm_netlink.c:1061) mptcp_pm_nl_get_local_id     (net/mptcp/pm_netlink.c:1164) mptcp_pm_get_local_id (net/mptcp/pm.c:420) subflow_check_req     (net/mptcp/subflow.c:98 net/mptcp/subflow.c:213) subflow_v4_route_req (net/mptcp/subflow.c:305)     tcp_conn_request (net/ipv4/tcp_input.c:7216) subflow_v4_conn_request (net/mptcp/subflow.c:651)     tcp_rcv_state_process (net/ipv4/tcp_input.c:6709) tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1934) tcp_v4_rcv     (net/ipv4/tcp_ipv4.c:2334) ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1))     ip_local_deliver_finish (include/linux/rcupdate.h:813 net/ipv4/ip_input.c:234) ip_local_deliver     (include/linux/netfilter.h:314 include/linux/netfilter.h:308 net/ipv4/ip_input.c:254)     ip_sublist_rcv_finish (include/net/dst.h:461 net/ipv4/ip_input.c:580) ip_sublist_rcv     (net/ipv4/ip_input.c:640) ip_list_rcv (net/ipv4/ip_input.c:675) __netif_receive_skb_list_core     (net/core/dev.c:5583 net/core/dev.c:5631) netif_receive_skb_list_internal (net/core/dev.c:5685     net/core/dev.c:5774) napi_complete_done (include/linux/list.h:37 include/net/gro.h:449     include/net/gro.h:444 net/core/dev.c:6114) igb_poll (drivers/net/ethernet/intel/igb/igb_main.c:8244) igb
    __napi_poll (net/core/dev.c:6582) net_rx_action (net/core/dev.c:6653 net/core/dev.c:6787) handle_softirqs     (kernel/softirq.c:553) __irq_exit_rcu (kernel/softirq.c:588 kernel/softirq.c:427 kernel/softirq.c:636)     irq_exit_rcu (kernel/softirq.c:651) common_interrupt (arch/x86/kernel/irq.c:247 (discriminator 14)) </IRQ>     This problem seems particularly prevalent if the user advertises an endpoint that has a different external     vs internal address. In the case where the external address is advertised and multiple connections already     exist, multiple subflow SYNs arrive in parallel which tends to trigger the race during creation of the     first local_addr_list entries which have the internal address instead. Fix by skipping the replacement of     an existing implicit local address if called via mptcp_pm_nl_get_local_id. (CVE-2025-21938)

  - In the Linux kernel, the following vulnerability has been resolved: devlink: fix xa_alloc_cyclic() error     handling In case of returning 1 from xa_alloc_cyclic() (wrapping) ERR_PTR(1) will be returned, which will     cause IS_ERR() to be false. Which can lead to dereference not allocated pointer (rel). Fix it by checking     if err is lower than zero. This wasn't found in real usecase, only noticed. Credit to Pierre.
    (CVE-2025-22017)

  - In the Linux kernel, the following vulnerability has been resolved: drm/xe: Use local fence in error path     of xe_migrate_clear The intent of the error path in xe_migrate_clear is to wait on locally generated fence     and then return. The code is waiting on m->fence which could be the local fence but this is only stable     under the job mutex leading to a possible UAF. Fix code to wait on local fence. (cherry picked from commit     762b7e95362170b3e13a8704f38d5e47eca4ba74) (CVE-2025-37869)

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

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1791800936 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: kunit: Fix potential null dereference     in kunit_device_driver_test() kunit_kzalloc() may return a NULL pointer, dereferencing it without NULL     check may lead to NULL dereference. Add a NULL check for test_state. (CVE-2024-56773)

  - In the Linux kernel, the following vulnerability has been resolved: arm64: ptrace: fix partial SETREGSET     for NT_ARM_FPMR Currently fpmr_set() doesn't initialize the temporary 'fpmr' variable, and a SETREGSET     call with a length of zero will leave this uninitialized. Consequently an arbitrary value will be written     back to target->thread.uw.fpmr, potentially leaking up to 64 bits of memory from the kernel stack. The     read is limited to a specific slot on the stack, and the issue does not provide a write mechanism. Fix     this by initializing the temporary value before copying the regset from userspace, as for other regsets     (e.g. NT_PRSTATUS, NT_PRFPREG, NT_ARM_SYSTEM_CALL). In the case of a zero-length write, the existing     contents of FPMR will be retained. Before this patch: | # ./fpmr-test | Attempting to write     NT_ARM_FPMR::fpmr = 0x900d900d900d900d | SETREGSET(nt=0x40e, len=8) wrote 8 bytes | | Attempting to read     NT_ARM_FPMR::fpmr | GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr = 0x900d900d900d900d     | | Attempting to write NT_ARM_FPMR (zero length) | SETREGSET(nt=0x40e, len=0) wrote 0 bytes | |     Attempting to read NT_ARM_FPMR::fpmr | GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr =     0xffff800083963d50 After this patch: | # ./fpmr-test | Attempting to write NT_ARM_FPMR::fpmr =     0x900d900d900d900d | SETREGSET(nt=0x40e, len=8) wrote 8 bytes | | Attempting to read NT_ARM_FPMR::fpmr |     GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr = 0x900d900d900d900d | | Attempting to     write NT_ARM_FPMR (zero length) | SETREGSET(nt=0x40e, len=0) wrote 0 bytes | | Attempting to read     NT_ARM_FPMR::fpmr | GETREGSET(nt=0x40e, len=8) read 8 bytes | Read NT_ARM_FPMR::fpmr = 0x900d900d900d900d     (CVE-2024-57878)

  - In the Linux kernel, the following vulnerability has been resolved: mptcp: fix 'scheduling while atomic'     in mptcp_pm_nl_append_new_local_addr If multiple connection requests attempt to create an implicit mptcp     endpoint in parallel, more than one caller may end up in mptcp_pm_nl_append_new_local_addr because none     found the address in local_addr_list during their call to mptcp_pm_nl_get_local_id. In this case, the     concurrent new_local_addr calls may delete the address entry created by the previous caller. These deletes     use synchronize_rcu, but this is not permitted in some of the contexts where this function may be called.
    During packet recv, the caller may be in a rcu read critical section and have preemption disabled. An     example stack: BUG: scheduling while atomic: swapper/2/0/0x00000302 Call Trace: <IRQ> dump_stack_lvl     (lib/dump_stack.c:117 (discriminator 1)) dump_stack (lib/dump_stack.c:124) __schedule_bug     (kernel/sched/core.c:5943) schedule_debug.constprop.0 (arch/x86/include/asm/preempt.h:33     kernel/sched/core.c:5970) __schedule (arch/x86/include/asm/jump_label.h:27 include/linux/jump_label.h:207     kernel/sched/features.h:29 kernel/sched/core.c:6621) schedule (arch/x86/include/asm/preempt.h:84     kernel/sched/core.c:6804 kernel/sched/core.c:6818) schedule_timeout (kernel/time/timer.c:2160)     wait_for_completion (kernel/sched/completion.c:96 kernel/sched/completion.c:116     kernel/sched/completion.c:127 kernel/sched/completion.c:148) __wait_rcu_gp (include/linux/rcupdate.h:311     kernel/rcu/update.c:444) synchronize_rcu (kernel/rcu/tree.c:3609) mptcp_pm_nl_append_new_local_addr     (net/mptcp/pm_netlink.c:966 net/mptcp/pm_netlink.c:1061) mptcp_pm_nl_get_local_id     (net/mptcp/pm_netlink.c:1164) mptcp_pm_get_local_id (net/mptcp/pm.c:420) subflow_check_req     (net/mptcp/subflow.c:98 net/mptcp/subflow.c:213) subflow_v4_route_req (net/mptcp/subflow.c:305)     tcp_conn_request (net/ipv4/tcp_input.c:7216) subflow_v4_conn_request (net/mptcp/subflow.c:651)     tcp_rcv_state_process (net/ipv4/tcp_input.c:6709) tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1934) tcp_v4_rcv     (net/ipv4/tcp_ipv4.c:2334) ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1))     ip_local_deliver_finish (include/linux/rcupdate.h:813 net/ipv4/ip_input.c:234) ip_local_deliver     (include/linux/netfilter.h:314 include/linux/netfilter.h:308 net/ipv4/ip_input.c:254)     ip_sublist_rcv_finish (include/net/dst.h:461 net/ipv4/ip_input.c:580) ip_sublist_rcv     (net/ipv4/ip_input.c:640) ip_list_rcv (net/ipv4/ip_input.c:675) __netif_receive_skb_list_core     (net/core/dev.c:5583 net/core/dev.c:5631) netif_receive_skb_list_internal (net/core/dev.c:5685     net/core/dev.c:5774) napi_complete_done (include/linux/list.h:37 include/net/gro.h:449     include/net/gro.h:444 net/core/dev.c:6114) igb_poll (drivers/net/ethernet/intel/igb/igb_main.c:8244) igb
    __napi_poll (net/core/dev.c:6582) net_rx_action (net/core/dev.c:6653 net/core/dev.c:6787) handle_softirqs     (kernel/softirq.c:553) __irq_exit_rcu (kernel/softirq.c:588 kernel/softirq.c:427 kernel/softirq.c:636)     irq_exit_rcu (kernel/softirq.c:651) common_interrupt (arch/x86/kernel/irq.c:247 (discriminator 14)) </IRQ>     This problem seems particularly prevalent if the user advertises an endpoint that has a different external     vs internal address. In the case where the external address is advertised and multiple connections already     exist, multiple subflow SYNs arrive in parallel which tends to trigger the race during creation of the     first local_addr_list entries which have the internal address instead. Fix by skipping the replacement of     an existing implicit local address if called via mptcp_pm_nl_get_local_id. (CVE-2025-21938)

  - In the Linux kernel, the following vulnerability has been resolved: devlink: fix xa_alloc_cyclic() error     handling In case of returning 1 from xa_alloc_cyclic() (wrapping) ERR_PTR(1) will be returned, which will     cause IS_ERR() to be false. Which can lead to dereference not allocated pointer (rel). Fix it by checking     if err is lower than zero. This wasn't found in real usecase, only noticed. Credit to Pierre.
    (CVE-2025-22017)

  - In the Linux kernel, the following vulnerability has been resolved: drm/xe: Use local fence in error path     of xe_migrate_clear The intent of the error path in xe_migrate_clear is to wait on locally generated fence     and then return. The code is waiting on m->fence which could be the local fence but this is only stable     under the job mutex leading to a possible UAF. Fix code to wait on local fence. (cherry picked from commit     762b7e95362170b3e13a8704f38d5e47eca4ba74) (CVE-2025-37869)

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

The CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS-STREAM8:CLSA-2026:1791780738 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: mm/khugepaged: invoke MMU notifiers in     shmem/file collapse paths Any codepath that zaps page table entries must invoke MMU notifiers to ensure     that secondary MMUs (like KVM) don't keep accessing pages which aren't mapped anymore. Secondary MMUs     don't hold their own references to pages that are mirrored over, so failing to notify them can lead to     page use-after-free. I'm marking this as addressing an issue introduced in commit f3f0e1d2150b     (khugepaged: add support of collapse for tmpfs/shmem pages), but most of the security impact of this     only came in commit 27e1f8273113 (khugepaged: enable collapse pmd for pte-mapped THP), which actually     omitted flushes for the removal of present PTEs, not just for the removal of empty page tables.
    (CVE-2022-48991)

  - In the Linux kernel, the following vulnerability has been resolved: virtio_net: fix xdp_rxq_info bug after     suspend/resume The following sequence currently causes a driver bug warning when using virtio_net: # ip     link set eth0 up # echo mem > /sys/power/state (or e.g. # rtcwake -s 10 -m mem) <resume> # ip link set     eth0 down Missing register, driver bug WARNING: CPU: 0 PID: 375 at net/core/xdp.c:138     xdp_rxq_info_unreg+0x58/0x60 Call trace: xdp_rxq_info_unreg+0x58/0x60 virtnet_close+0x58/0xac
    __dev_close_many+0xac/0x140 __dev_change_flags+0xd8/0x210 dev_change_flags+0x24/0x64     do_setlink+0x230/0xdd0 ... This happens because virtnet_freeze() frees the receive_queue completely     (including struct xdp_rxq_info) but does not call xdp_rxq_info_unreg(). Similarly, virtnet_restore() sets     up the receive_queue again but does not call xdp_rxq_info_reg(). Actually, parts of virtnet_freeze_down()     and virtnet_restore_up() are almost identical to virtnet_close() and virtnet_open(): only the calls to     xdp_rxq_info_(un)reg() are missing. This means that we can fix this easily and avoid such problems in the     future by just calling virtnet_close()/open() from the freeze/restore handlers. Aside from adding the     missing xdp_rxq_info calls the only difference is that the refill work is only cancelled if     netif_running(). However, this should not make any functional difference since the refill work should only     be active if the network interface is actually up. (CVE-2022-49687)

  - In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix repeated calls to     sock_put() when msg has more_data In tcp_bpf_send_verdict() redirection, the eval variable is assigned to
    __SK_REDIRECT after the apply_bytes data is sent, if msg has more_data, sock_put() will be called multiple     times. We should reset the eval variable to __SK_NONE every time more_data starts. This causes: IPv4:
    Attempt to release TCP socket in state 1 00000000b4c925d7 ------------[ cut here ]------------ refcount_t:
    addition on 0; use-after-free. WARNING: CPU: 5 PID: 4482 at lib/refcount.c:25     refcount_warn_saturate+0x7d/0x110 Modules linked in: CPU: 5 PID: 4482 Comm: sockhash_bypass Kdump: loaded     Not tainted 6.0.0 #1 Hardware name: Red Hat KVM, BIOS 1.11.0-2.el7 04/01/2014 Call Trace: <TASK>
    __tcp_transmit_skb+0xa1b/0xb90 ? __alloc_skb+0x8c/0x1a0 ? __kmalloc_node_track_caller+0x184/0x320     tcp_write_xmit+0x22a/0x1110 __tcp_push_pending_frames+0x32/0xf0 do_tcp_sendpages+0x62d/0x640     tcp_bpf_push+0xae/0x2c0 tcp_bpf_sendmsg_redir+0x260/0x410 ? preempt_count_add+0x70/0xa0     tcp_bpf_send_verdict+0x386/0x4b0 tcp_bpf_sendmsg+0x21b/0x3b0 sock_sendmsg+0x58/0x70
    __sys_sendto+0xfa/0x170 ? xfd_validate_state+0x1d/0x80 ? switch_fpu_return+0x59/0xe0
    __x64_sys_sendto+0x24/0x30 do_syscall_64+0x37/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd     (CVE-2022-50536)

  - In the Linux kernel, the following vulnerability has been resolved: crypto: scomp - fix req->dst buffer     overflow The req->dst buffer size should be checked before copying from the scomp_scratch->dst to avoid     req->dst buffer overflow problem. (CVE-2023-52612)

  - In the Linux kernel, the following vulnerability has been resolved: net: atlantic: eliminate double free     in error handling logic Driver has a logic leak in ring data allocation/free, where aq_ring_free could be     called multiple times on same ring, if system is under stress and got memory allocation error. Ring     pointer was used as an indicator of failure, but this is not correct since only ring data is     allocated/deallocated. Ring itself is an array member. Changing ring allocation functions to return error     code directly. This simplifies error handling and eliminates aq_ring_free on higher layer.
    (CVE-2023-52664)

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-2026:1789898700 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: ceph: fix possible deadlock when     holding Fwb to get inline_data 1, mount with wsync. 2, create a file with O_RDWR, and the request was sent     to mds.0: ceph_atomic_open()--> ceph_mdsc_do_request(openc) finish_open(file, dentry, ceph_open)-->     ceph_open()--> ceph_init_file()--> ceph_init_file_info()--> ceph_uninline_data()--> { ... if     (inline_version == 1 || /* initial version, no data */ inline_version == CEPH_INLINE_NONE) goto     out_unlock; ... } The inline_version will be 1, which is the initial version for the new create file. And     here the ci->i_inline_version will keep with 1, it's buggy. 3, buffer write to the file immediately:
    ceph_write_iter()--> ceph_get_caps(file, need=Fw, want=Fb, ...); generic_perform_write()-->     a_ops->write_begin()--> ceph_write_begin()--> netfs_write_begin()--> netfs_begin_read()-->     netfs_rreq_submit_slice()--> netfs_read_from_server()--> rreq->netfs_ops->issue_read()-->     ceph_netfs_issue_read()--> { ... if (ci->i_inline_version != CEPH_INLINE_NONE &&     ceph_netfs_issue_op_inline(subreq)) return; ... } ceph_put_cap_refs(ci, Fwb); The     ceph_netfs_issue_op_inline() will send a getattr(Fsr) request to mds.1. 4, then the mds.1 will request the     rd lock for CInode::filelock from the auth mds.0, the mds.0 will do the CInode::filelock state transation     from excl --> sync, but it need to revoke the Fxwb caps back from the clients. While the kernel client has     aleady held the Fwb caps and waiting for the getattr(Fsr). It's deadlock! URL:
    https://tracker.ceph.com/issues/55377 (CVE-2022-49296)

  - In the Linux kernel, the following vulnerability has been resolved: tracing: Fix reading strings from     synthetic events The follow commands caused a crash: # cd /sys/kernel/tracing # echo 's:open char file[]'     > dynamic_events # echo 'hist:keys=common_pid:file=filename:onchange($file).trace(open,$file)' >     events/syscalls/sys_enter_openat/trigger' # echo 1 > events/synthetic/open/enable BOOM! The problem is     that the synthetic event field char file[] will read the value given to it as a string without any     memory checks to make sure the address is valid. The above example will pass in the user space address and     the sythetic event code will happily call strlen() on it and then strscpy() where either one will cause an     oops when accessing user space addresses. Use the helper functions from trace_kprobe and trace_eprobe that     can read strings safely (and actually succeed when the address is from user space and the memory is mapped     in). Now the above can show: packagekitd-1721 [000] ...2. 104.597170: open:
    file=/usr/lib/rpm/fileattrs/cmake.attr in:imjournal-978 [006] ...2. 104.599642: open:
    file=/var/lib/rsyslog/imjournal.state.tmp packagekitd-1721 [000] ...2. 104.626308: open:
    file=/usr/lib/rpm/fileattrs/debuginfo.attr (CVE-2022-50255)

  - In the Linux kernel, the following vulnerability has been resolved: hwrng: core - Fix page fault dead lock     on mmap-ed hwrng There is a dead-lock in the hwrng device read path. This triggers when the user reads     from /dev/hwrng into memory also mmap-ed from /dev/hwrng. The resulting page fault triggers a recursive     read which then dead-locks. Fix this by using a stack buffer when calling copy_to_user. (CVE-2023-52615)

  - In the Linux kernel, the following vulnerability has been resolved: fscache: Use wait_on_bit() to wait for     the freeing of relinquished volume The freeing of relinquished volume will wake up the pending volume     acquisition by using wake_up_bit(), however it is mismatched with wait_var_event() used in     fscache_wait_on_volume_collision() and it will never wake up the waiter in the wait-queue because these     two functions operate on different wait-queues. According to the implementation in     fscache_wait_on_volume_collision(), if the wake-up of pending acquisition is delayed longer than 20     seconds (e.g., due to the delay of on-demand fd closing), the first wait_var_event_timeout() will timeout     and the following wait_var_event() will hang forever as shown below: FS-Cache: Potential volume collision     new=00000024 old=00000022 ...... INFO: task mount:1148 blocked for more than 122 seconds. Not tainted     6.1.0-rc6+ #1 task:mount state:D stack:0 pid:1148 ppid:1 Call Trace: <TASK> __schedule+0x2f6/0xb80     schedule+0x67/0xe0 fscache_wait_on_volume_collision.cold+0x80/0x82 __fscache_acquire_volume+0x40d/0x4e0     erofs_fscache_register_volume+0x51/0xe0 [erofs] erofs_fscache_register_fs+0x19c/0x240 [erofs]     erofs_fc_fill_super+0x746/0xaf0 [erofs] vfs_get_super+0x7d/0x100 get_tree_nodev+0x16/0x20     erofs_fc_get_tree+0x20/0x30 [erofs] vfs_get_tree+0x24/0xb0 path_mount+0x2fa/0xa90 do_mount+0x7c/0xa0
    __x64_sys_mount+0x8b/0xe0 do_syscall_64+0x30/0x60 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Considering     that wake_up_bit() is more selective, so fix it by using wait_on_bit() instead of wait_var_event() to wait     for the freeing of relinquished volume. In addition because waitqueue_active() is used in wake_up_bit()     and clear_bit() doesn't imply any memory barrier, use clear_and_wake_up_bit() to add the missing memory     barrier between cursor->flags and waitqueue_active(). (CVE-2023-52982)

  - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: fix iso_conn related     locking and validity issues sk->sk_state indicates whether iso_pi(sk)->conn is valid. Operations that     check/update sk_state and access conn should hold lock_sock, otherwise they can race. The order of taking     locks is hci_dev_lock > lock_sock > iso_conn_lock, which is how it is in connect/disconnect_cfm ->     iso_conn_del -> iso_chan_del. Fix locking in iso_connect_cis/bis and sendmsg/recvmsg to take lock_sock     around updating sk_state and conn. iso_conn_del must not occur during iso_connect_cis/bis, as it frees the     iso_conn. Hold hdev->lock longer to prevent that. This should not reintroduce the issue fixed in commit     241f51931c35 (Bluetooth: ISO: Avoid circular locking dependency), since the we acquire locks in order.
    We retain the fix in iso_sock_connect to release lock_sock before iso_connect_* acquires hdev->lock.
    Similarly for commit 6a5ad251b7cd (Bluetooth: ISO: Fix possible circular locking dependency). We retain     the fix in iso_conn_ready to not acquire iso_conn_lock before lock_sock. iso_conn_add shall return     iso_conn with valid hcon. Make it so also when reusing an old CIS connection waiting for disconnect     timeout (see __iso_sock_close where conn->hcon is set to NULL). Trace with iso_conn_del after iso_chan_add     in iso_connect_cis: =============================================================== iso_sock_create:771:
    sock 00000000be9b69b7 iso_sock_init:693: sk 000000004dff667e iso_sock_bind:827: sk 000000004dff667e     70:1a:b8:98:ff:a2 type 1 iso_sock_setsockopt:1289: sk 000000004dff667e iso_sock_setsockopt:1289: sk     000000004dff667e iso_sock_setsockopt:1289: sk 000000004dff667e iso_sock_connect:875: sk 000000004dff667e     iso_connect_cis:353: 70:1a:b8:98:ff:a2 -> 28:3d:c2:4a:7e:da hci_get_route:1199: 70:1a:b8:98:ff:a2 ->     28:3d:c2:4a:7e:da hci_conn_add:1005: hci0 dst 28:3d:c2:4a:7e:da iso_conn_add:140: hcon 000000007b65d182     conn 00000000daf8625e __iso_chan_add:214: conn 00000000daf8625e iso_connect_cfm:1700: hcon     000000007b65d182 bdaddr 28:3d:c2:4a:7e:da status 12 iso_conn_del:187: hcon 000000007b65d182 conn     00000000daf8625e, err 16 iso_sock_clear_timer:117: sock 000000004dff667e state 3 <Note: sk_state is     BT_BOUND (3), so iso_connect_cis is still running at this point> iso_chan_del:153: sk 000000004dff667e,     conn 00000000daf8625e, err 16 hci_conn_del:1151: hci0 hcon 000000007b65d182 handle 65535     hci_conn_unlink:1102: hci0: hcon 000000007b65d182 hci_chan_list_flush:2780: hcon 000000007b65d182     iso_sock_getsockopt:1376: sk 000000004dff667e iso_sock_getname:1070: sock 00000000be9b69b7, sk     000000004dff667e iso_sock_getname:1070: sock 00000000be9b69b7, sk 000000004dff667e     iso_sock_getsockopt:1376: sk 000000004dff667e iso_sock_getname:1070: sock 00000000be9b69b7, sk     000000004dff667e iso_sock_getname:1070: sock 00000000be9b69b7, sk 000000004dff667e iso_sock_shutdown:1434:
    sock 00000000be9b69b7, sk 000000004dff667e, how 1 __iso_sock_close:632: sk 000000004dff667e state 5 socket     00000000be9b69b7 <Note: sk_state is BT_CONNECT (5), even though iso_chan_del sets BT_CLOSED (6). Only     iso_connect_cis sets it to BT_CONNECT, so it must be that iso_chan_del occurred between iso_chan_add and     end of iso_connect_cis.> BUG: kernel NULL pointer dereference, address: 0000000000000000 PGD     8000000006467067 P4D 8000000006467067 PUD 3f5f067 PMD 0 Oops: 0000 [#1] PREEMPT SMP PTI Hardware name:
    QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-1.fc38 04/01/2014 RIP: 0010:__iso_sock_close     (net/bluetooth/iso.c:664) bluetooth =============================================================== Trace     with iso_conn_del before iso_chan_add in iso_connect_cis:
    =============================================================== iso_connect_cis:356: 70:1a:b8:98:ff:a2 ->     28:3d:c2:4a:7e:da ... iso_conn_add:140: hcon 0000000093bc551f conn 00000000768ae504 hci_dev_put:1487: hci0     orig refcnt 21 hci_event_packet:7607: hci0: e ---truncated--- (CVE-2023-54164)

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

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1789037015 advisory.

  - In the Linux kernel, the following vulnerability has been resolved: scsi: iscsi: Fix conn use after free     during resets If we haven't done a unbind target call we can race where iscsi_conn_teardown wakes up the     EH thread and then frees the conn while those threads are still accessing the conn ehwait. We can only do     one TMF per session so this just moves the TMF fields from the conn to the session. We can then rely on     the iscsi_session_teardown->iscsi_remove_session->__iscsi_unbind_session call to remove the target and     it's devices, and know after that point there is no device or scsi-ml callout trying to access the     session. (CVE-2021-47328)

  - In the Linux kernel, the following vulnerability has been resolved: ext4: improve error handling from     ext4_dirhash() The ext4_dirhash() will *almost* never fail, especially when the hash tree feature was     first introduced. However, with the addition of support of encrypted, casefolded file names, that function     can most certainly fail today. So make sure the callers of ext4_dirhash() properly check for failures, and     reflect the errors back up to their callers. (CVE-2023-53473)

  - In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Clear Present bit before     tearing down context entry When tearing down a context entry, the current implementation zeros the entire     128-bit entry using multiple 64-bit writes. This creates a window where the hardware can fetch a torn     entry  where some fields are already zeroed while the 'Present' bit is still set  leading to     unpredictable behavior or spurious faults. While x86 provides strong write ordering, the compiler may     reorder writes to the two 64-bit halves of the context entry. Even without compiler reordering, the     hardware fetch is not guaranteed to be atomic with respect to multiple CPU writes. Align with the     Guidance to Software for Invalidations in the VT-d spec (Section 6.5.3.3) by implementing the     recommended ownership handshake: 1. Clear only the 'Present' (P) bit of the context entry first to signal     the transition of ownership from hardware to software. 2. Use dma_wmb() to ensure the cleared bit is     visible to the IOMMU. 3. Perform the required cache and context-cache invalidation to ensure hardware no     longer has cached references to the entry. 4. Fully zero out the entry only after the invalidation is     complete. Also, add a dma_wmb() to context_set_present() to ensure the entry is fully initialized before     the 'Present' bit becomes visible. (CVE-2026-45944)

  - In the Linux kernel, the following vulnerability has been resolved: ipmi: Add limits to event and receive     message requests The driver would just fetch events and receive messages until the BMC said it was done.
    To avoid issues with BMCs that never say they are done, add a limit of 10 fetches at a time. In addition,     an si interface has an attn state it can return from the hardware which is supposed to cause a flag fetch     to see if the driver needs to fetch events or message or a few other things. If the attn bit gets stuck,     it's a similar problem. So allow messages in between flag fetches so the driver itself doesn't get stuck.
    This is a more general fix than the previous fix for the specific bad BMC, but should fix the more general     issue of a BMC that won't stop saying it has data. This has been there from the beginning of the driver.
    It's not a bug per-se, but it is accounting for bugs in BMCs. (CVE-2026-46177)

  - In the Linux kernel, the following vulnerability has been resolved: PCI: use generic driver_override     infrastructure When a driver is probed through __driver_attach(), the bus' match() callback is called     without the device lock held, thus accessing the driver_override field without a lock, which can cause a     UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking     internally. Note that calling match() from __driver_attach() without the device lock held is intentional.
    [1] (CVE-2026-53120)

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.

  - sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIE_ECHO restores     fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM length, HMAC list, or     CHUNKS list can then reach association consumers with lengths or identifiers that were never validated     against the local backing arrays. A forged RANDOM length can cause out-of-bounds reads during key-vector     construction. A forged HMAC identifier also caused a 32-byte write past a zero-length AUTH chunk,     providing a primitive for a local privilege escalation chain. Validate the cookie's RANDOM, HMACS, and     CHUNKS parameters at the cookie trust boundary before copying them into the association. Reject invalid     types, malformed lengths, unsupported HMAC identifiers, HMAC lists without SHA1, and forbidden chunk ids.
    (CVE-2026-74752)

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

ID	Name	Product	Family	Type	Severity
364689	AlmaLinux 9.6 [TuxCare] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1791800936)	Nessus	Alma Linux Local Security Checks	Local	high
364682	Rocky Linux 9.6 [TuxCare] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1791800936)	Nessus	Rocky Linux Local Security Checks	Local	high
364675	CentOS Linux 8 [TuxCare] Security Update: bpftool / kernel / kernel-core / kernel-cross-headers / etc Multiple Vulnerabilities (CENTOS-STREAM8:CLSA-2026:1791780738)	Nessus	CentOS Local Security Checks	Local	high
360912	AlmaLinux 9.2 [TuxCare] Security Update: bpftool / kernel / kernel-abi-stablelists / kernel-core / etc Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1789898700)	Nessus	Alma Linux Local Security Checks	Local	high
352722	CentOS Linux 7 [TuxCare] Security Update: bpftool / kernel / kernel-debug / kernel-debug-devel / kernel-devel / etc Multiple Vulnerabilities (CENTOS7:CLSA-2026:1789037015)	Nessus	CentOS Local Security Checks	Local	high
340762	Linux Distros Unpatched Vulnerability : CVE-2026-74752	Nessus	Misc.	Local	critical

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