In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Remove skb secpath if xfrm state is not found Hardware returns a unique identifier for a decrypted packet's xfrm state, this state is looked up in an xarray. However, the state might have been freed by the time of this lookup. Currently, if the state is not found, only a counter is incremented. The secpath (sp) extension on the skb is not removed, resulting in sp->len becoming 0. Subsequently, functions like __xfrm_policy_check() attempt to access fields such as xfrm_input_state(skb)->xso.type (which dereferences sp->xvec[sp->len - 1]) without first validating sp->len. This leads to a crash when dereferencing an invalid state pointer. This patch prevents the crash by explicitly removing the secpath extension from the skb if the xfrm state is not found after hardware decryption. This ensures downstream functions do not operate on a zero-length secpath. BUG: unable to handle page fault for address: ffffffff000002c8 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 282e067 P4D 282e067 PUD 0 Oops: Oops: 0000 [#1] SMP CPU: 12 UID: 0 PID: 0 Comm: swapper/12 Not tainted 6.15.0-rc7_for_upstream_min_debug_2025_05_27_22_44 #1 NONE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:__xfrm_policy_check+0x61a/0xa30 Code: b6 77 7f 83 e6 02 74 14 4d 8b af d8 00 00 00 41 0f b6 45 05 c1 e0 03 48 98 49 01 c5 41 8b 45 00 83 e8 01 48 98 49 8b 44 c5 10 <0f> b6 80 c8 02 00 00 83 e0 0c 3c 04 0f 84 0c 02 00 00 31 ff 80 fa RSP: 0018:ffff88885fb04918 EFLAGS: 00010297 RAX: ffffffff00000000 RBX: 0000000000000002 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffffff8311af80 R08: 0000000000000020 R09: 00000000c2eda353 R10: ffff88812be2bbc8 R11: 000000001faab533 R12: ffff88885fb049c8 R13: ffff88812be2bbc8 R14: 0000000000000000 R15: ffff88811896ae00 FS: 0000000000000000(0000) GS:ffff8888dca82000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff000002c8 CR3: 0000000243050002 CR4: 0000000000372eb0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> ? try_to_wake_up+0x108/0x4c0 ? udp4_lib_lookup2+0xbe/0x150 ? udp_lib_lport_inuse+0x100/0x100 ? __udp4_lib_lookup+0x2b0/0x410 __xfrm_policy_check2.constprop.0+0x11e/0x130 udp_queue_rcv_one_skb+0x1d/0x530 udp_unicast_rcv_skb+0x76/0x90 __udp4_lib_rcv+0xa64/0xe90 ip_protocol_deliver_rcu+0x20/0x130 ip_local_deliver_finish+0x75/0xa0 ip_local_deliver+0xc1/0xd0 ? ip_protocol_deliver_rcu+0x130/0x130 ip_sublist_rcv+0x1f9/0x240 ? ip_rcv_finish_core+0x430/0x430 ip_list_rcv+0xfc/0x130 __netif_receive_skb_list_core+0x181/0x1e0 netif_receive_skb_list_internal+0x200/0x360 ? mlx5e_build_rx_skb+0x1bc/0xda0 [mlx5_core] gro_receive_skb+0xfd/0x210 mlx5e_handle_rx_cqe_mpwrq+0x141/0x280 [mlx5_core] mlx5e_poll_rx_cq+0xcc/0x8e0 [mlx5_core] ? mlx5e_handle_rx_dim+0x91/0xd0 [mlx5_core] mlx5e_napi_poll+0x114/0xab0 [mlx5_core] __napi_poll+0x25/0x170 net_rx_action+0x32d/0x3a0 ? mlx5_eq_comp_int+0x8d/0x280 [mlx5_core] ? notifier_call_chain+0x33/0xa0 handle_softirqs+0xda/0x250 irq_exit_rcu+0x6d/0xc0 common_interrupt+0x81/0xa0 </IRQ>

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1208 advisory.

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

    net: fix NULL pointer dereference in l3mdev_l3_rcv (CVE-2025-22103)

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

    ext4: avoid journaling sb update on error if journal is destroying (CVE-2025-22113)

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

    md/md-bitmap: fix wrong bitmap_limit for clustermd when write sb (CVE-2025-22124)

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

    md/raid1,raid10: don't ignore IO flags (CVE-2025-22125)

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

    io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU (CVE-2025-38453)

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

    xfrm: interface: fix use-after-free after changing collect_md xfrm interface (CVE-2025-38500)

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

    bpf: Fix oob access in cgroup local storage (CVE-2025-38502)

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

    net/sched: Restrict conditions for adding duplicating netems to qdisc tree (CVE-2025-38553)

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

    HID: core: Harden s32ton() against conversion to 0 bits (CVE-2025-38556)

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

    perf/core: Prevent VMA split of buffer mappings (CVE-2025-38563)

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

    perf/core: Exit early on perf_mmap() fail (CVE-2025-38565)

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

    sunrpc: fix handling of server side tls alerts (CVE-2025-38566)

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

    net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing (CVE-2025-38568)

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

    sunrpc: fix client side handling of tls alerts (CVE-2025-38571)

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

    ipv6: reject malicious packets in ipv6_gso_segment() (CVE-2025-38572)

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

    bpf, arm64: Fix fp initialization for exception boundary (CVE-2025-38586)

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

    ipv6: fix possible infinite loop in fib6_info_uses_dev() (CVE-2025-38587)

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

    ipv6: prevent infinite loop in rt6_nlmsg_size() (CVE-2025-38588)

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

    net/mlx5e: Remove skb secpath if xfrm state is not found (CVE-2025-38590)

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

    bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls (CVE-2025-38608)

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

    eventpoll: Fix semi-unbounded recursion (CVE-2025-38614)

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

    fs/ntfs3: cancle set bad inode after removing name fails (CVE-2025-38615)

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

    tls: handle data disappearing from under the TLS ULP (CVE-2025-38616)

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

    net/packet: fix a race in packet_set_ring() and packet_notifier() (CVE-2025-38617)

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

    vsock: Do not allow binding to VMADDR_PORT_ANY (CVE-2025-38618)

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

    net: drop UFO packets in udp_rcv_segment() (CVE-2025-38622)

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

    pinmux: fix race causing mux_owner NULL with active mux_usecount (CVE-2025-38632)

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

    netfilter: xt_nfacct: don't assume acct name is null-terminated (CVE-2025-38639)

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

    bpf: Disable migration in nf_hook_run_bpf(). (CVE-2025-38640)

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

    net/mlx5: Check device memory pointer before usage (CVE-2025-38645)

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

    proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al (CVE-2025-38653)

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

    [ceph] parse_longname(): strrchr() expects NUL-terminated string (CVE-2025-38660)

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

    can: netlink: can_changelink(): fix NULL pointer deref of struct can_priv::do_set_mode (CVE-2025-38665)

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

    arm64/entry: Mask DAIF in cpu_switch_to(), call_on_irq_stack() (CVE-2025-38670)

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

    xfrm: state: initialize state_ptrs earlier in xfrm_state_find (CVE-2025-38675)

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

    iommu/amd: Avoid stack buffer overflow from kernel cmdline (CVE-2025-38676)

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

    mm/ptdump: take the memory hotplug lock inside ptdump_walk_pgd() (CVE-2025-38681)

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

    hv_netvsc: Fix panic during namespace deletion with VF (CVE-2025-38683)

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

    fbdev: Fix vmalloc out-of-bounds write in fast_imageblit (CVE-2025-38685)

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

    userfaultfd: fix a crash in UFFDIO_MOVE when PMD is a migration entry (CVE-2025-38686)

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

    pNFS: Fix uninited ptr deref in block/scsi layout (CVE-2025-38691)

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

    exfat: add cluster chain loop check for dir (CVE-2025-38692)

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

    scsi: libiscsi: Initialize iscsi_conn->dd_data only if memory is allocated (CVE-2025-38700)

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

    ext4: do not BUG when INLINE_DATA_FL lacks system.data xattr (CVE-2025-38701)

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

    fbdev: fix potential buffer overflow in do_register_framebuffer() (CVE-2025-38702)

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

    rcu/nocb: Fix possible invalid rdp's->nocb_cb_kthread pointer access (CVE-2025-38704)

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

    fs/ntfs3: Add sanity check for file name (CVE-2025-38707)

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

    drbd: add missing kref_get in handle_write_conflicts (CVE-2025-38708)

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

    loop: Avoid updating block size under exclusive owner (CVE-2025-38709)

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

    net: kcm: Fix race condition in kcm_unattach() (CVE-2025-38717)

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

    sctp: linearize cloned gso packets in sctp_rcv (CVE-2025-38718)

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

    netfilter: ctnetlink: fix refcount leak on table dump (CVE-2025-38721)

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

    nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() (CVE-2025-38724)

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

    smb3: fix for slab out of bounds on mount to ksmbd (CVE-2025-38728)

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

    io_uring/net: commit partial buffers on retry (CVE-2025-38730)

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

    netfilter: nf_reject: don't leak dst refcount for loopback packets (CVE-2025-38732)

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

    cifs: Fix oops due to uninitialised variable (CVE-2025-38737)

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

    net/sched: Fix backlog accounting in qdisc_dequeue_internal (CVE-2025-39677)

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

    x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper (CVE-2025-39681)

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

    tls: fix handling of zero-length records on the rx_list (CVE-2025-39682)

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

    tracing: Limit access to parser->buffer when trace_get_user failed (CVE-2025-39683)

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

    ftrace: Also allocate and copy hash for reading of filter files (CVE-2025-39689)

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

    fs/buffer: fix use-after-free when call bh_read() helper (CVE-2025-39691)

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

    NFS: Fix a race when updating an existing write (CVE-2025-39697)

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

    io_uring/futex: ensure io_futex_wait() cleans up properly on failure (CVE-2025-39698)

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

    mm/damon/ops-common: ignore migration request to invalid nodes (CVE-2025-39700)

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

    ipv6: sr: Fix MAC comparison to be constant-time (CVE-2025-39702)

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

    vsock/virtio: Validate length in packet header before skb_put() (CVE-2025-39718)

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

    netfs: Fix unbuffered write error handling (CVE-2025-39723)

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

    serial: 8250: fix panic due to PSLVERR (CVE-2025-39724)

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

    mm/vmscan: fix hwpoisoned large folio handling in shrink_folio_list (CVE-2025-39725)

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

    mm: swap: fix potential buffer overflow in setup_clusters() (CVE-2025-39727)

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

    NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() (CVE-2025-39730)

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

    Revert fs/ntfs3: Replace inode_trylock with inode_lock (CVE-2025-39734)

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

    btrfs: do not allow relocation of partially dropped subvolumes (CVE-2025-39738)

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

    rcu: Fix rcu_read_unlock() deadloop due to IRQ work (CVE-2025-39744)

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

    bpf: Forget ranges when refining tnum after JSET (CVE-2025-39748)

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

    rcu: Protect ->defer_qs_iw_pending from data race (CVE-2025-39749)

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

    mm/smaps: fix race between smaps_hugetlb_range and migration (CVE-2025-39754)

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

    fs: Prevent file descriptor table allocations exceeding INT_MAX (CVE-2025-39756)

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

    btrfs: qgroup: fix race between quota disable and quota rescan ioctl (CVE-2025-39759)

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

    usb: core: config: Prevent OOB read in SS endpoint companion parsing (CVE-2025-39760)

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

    ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered (CVE-2025-39763)

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

    net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit (CVE-2025-39766)

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

    net: gso: Forbid IPv6 TSO with extensions on devices with only IPV6_CSUM (CVE-2025-39770)

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

    net: bridge: fix soft lockup in br_multicast_query_expired() (CVE-2025-39773)

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

    btrfs: subpage: keep TOWRITE tag until folio is cleaned (CVE-2025-39779)

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

    sched/ext: Fix invalid task state transitions on class switch (CVE-2025-39780)

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

    jbd2: prevent softlockup in jbd2_log_do_checkpoint() (CVE-2025-39782)

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

    PCI: endpoint: Fix configfs group list head handling (CVE-2025-39783)

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

    dm: dm-crypt: Do not partially accept write BIOs with zoned targets (CVE-2025-39791)

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

    dm: Always split write BIOs to zoned device limits (CVE-2025-39792)

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

    block: avoid possible overflow for chunk_sectors check in blk_stack_limits() (CVE-2025-39795)

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

    xfrm: Duplicate SPI Handling (CVE-2025-39797)

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

    NFS: Fix the setting of capabilities when automounting a new filesystem (CVE-2025-39798)

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

    btrfs: abort transaction on unexpected eb generation at btrfs_copy_root() (CVE-2025-39800)

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

    HID: multitouch: fix slab out-of-bounds access in mt_report_fixup() (CVE-2025-39806)

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

    sctp: initialize more fields in sctp_v6_from_sk() (CVE-2025-39812)

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

    ftrace: Fix potential warning in trace_printk_seq during ftrace_dump (CVE-2025-39813)

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

    efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare (CVE-2025-39817)

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

    fs/smb: Fix inconsistent refcnt update (CVE-2025-39819)

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

    KVM: x86: use array_index_nospec with indices that come from guest (CVE-2025-39823)

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

    HID: asus: fix UAF via HID_CLAIMED_INPUT validation (CVE-2025-39824)

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

    smb: client: fix race with concurrent opens in rename(2) (CVE-2025-39825)

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

    trace/fgraph: Fix the warning caused by missing unregister notifier (CVE-2025-39829)

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

    net/mlx5: Fix lockdep assertion on sync reset unload event (CVE-2025-39832)

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

    xfs: do not propagate ENODATA disk errors into xattr code (CVE-2025-39835)

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

    mm: slub: avoid wake up kswapd in set_track_prepare (CVE-2025-39843)

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

    mm: move page table sync declarations to linux/pgtable.h (CVE-2025-39844)

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

    x86/mm/64: define ARCH_PAGE_TABLE_SYNC_MASK and arch_sync_kernel_mappings() (CVE-2025-39845)

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

    net/tcp: Fix socket memory leak in TCP-AO failure handling for IPv6 (CVE-2025-39852)

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-1210 advisory.

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

    fs: relax assertions on failure to encode file handles (CVE-2024-57924)

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

    net: Fix null-ptr-deref by sock_lock_init_class_and_name() and rmmod. (CVE-2025-23143)

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

    media: mediatek: vcodec: Fix a resource leak related to the scp device in FW initialization     (CVE-2025-23160)

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

    btrfs: adjust subpage bit start based on sectorsize (CVE-2025-37931)

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

    RDMA/core: Fix KASAN: slab-use-after-free Read in ib_register_device problem (CVE-2025-38022)

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

    netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX (CVE-2025-38201)

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

    bpf: Fix oob access in cgroup local storage (CVE-2025-38502)

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

    net/mlx5e: Remove skb secpath if xfrm state is not found (CVE-2025-38590)

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

    net/sched: Fix backlog accounting in qdisc_dequeue_internal (CVE-2025-39677)

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

    cifs: prevent NULL pointer dereference in UTF16 conversion (CVE-2025-39838)

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

    batman-adv: fix OOB read/write in network-coding decode (CVE-2025-39839)

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

    ocfs2: prevent release journal inode after journal shutdown (CVE-2025-39842)

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

    mm: slub: avoid wake up kswapd in set_track_prepare (CVE-2025-39843)

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

    mm: move page table sync declarations to linux/pgtable.h (CVE-2025-39844)

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

    x86/mm/64: define ARCH_PAGE_TABLE_SYNC_MASK and arch_sync_kernel_mappings() (CVE-2025-39845)

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

    pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region() (CVE-2025-39846)

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

    ppp: fix memory leak in pad_compress_skb (CVE-2025-39847)

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

    ax25: properly unshare skbs in ax25_kiss_rcv() (CVE-2025-39848)

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

    wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result() (CVE-2025-39849)

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

    fs: writeback: fix use-after-free in __mark_inode_dirty() (CVE-2025-39866)

    In the Linux kernel, the following vulnerability has been resolved:x86/vmscape: Add conditional IBPB     mitigation

    VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a     userspace hypervisor (like QEMU). Existing mitigations already protect kernel/KVM from a malicious guest.
    Userspace can additionally be protected by flushing the branch predictors after a VMexit.

    Since it is the userspace that consumes the poisoned branch predictors, conditionally issue an IBPB after     a VMexit and before returning to userspace. Workloads that frequently switch between hypervisor and     userspace will incur the most overhead from the new IBPB.

    This new IBPB is not integrated with the existing IBPB sites. For instance, a task can use the existing     speculation control prctl() to get an IBPB at context switch time. With this implementation, the IBPB is     doubled up: one at context switch and another before running userspace. The intent is to integrate and     optimize these cases post-embargo.[ dhansen: elaborate on suboptimal IBPB solution ] (CVE-2025-40300)

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

  - net/mlx5e: Remove skb secpath if xfrm state is not found Hardware returns a unique identifier for a     decrypted packet's xfrm state, this state is looked up in an xarray. However, the state might have been     freed by the time of this lookup. Currently, if the state is not found, only a counter is incremented. The     secpath (sp) extension on the skb is not removed, resulting in sp->len becoming 0. Subsequently, functions     like __xfrm_policy_check() attempt to access fields such as xfrm_input_state(skb)->xso.type (which     dereferences sp->xvec[sp->len - 1]) without first validating sp->len. This leads to a crash when     dereferencing an invalid state pointer. This patch prevents the crash by explicitly removing the secpath     extension from the skb if the xfrm state is not found after hardware decryption. This ensures downstream     functions do not operate on a zero-length secpath. BUG: unable to handle page fault for address:
    ffffffff000002c8 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD     282e067 P4D 282e067 PUD 0 Oops: Oops: 0000 [#1] SMP CPU: 12 UID: 0 PID: 0 Comm: swapper/12 Not tainted     6.15.0-rc7_for_upstream_min_debug_2025_05_27_22_44 #1 NONE Hardware name: QEMU Standard PC (Q35 + ICH9,     2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP:
    0010:__xfrm_policy_check+0x61a/0xa30 Code: b6 77 7f 83 e6 02 74 14 4d 8b af d8 00 00 00 41 0f b6 45 05 c1     e0 03 48 98 49 01 c5 41 8b 45 00 83 e8 01 48 98 49 8b 44 c5 10 <0f> b6 80 c8 02 00 00 83 e0 0c 3c 04 0f 84     0c 02 00 00 31 ff 80 fa RSP: 0018:ffff88885fb04918 EFLAGS: 00010297 RAX: ffffffff00000000 RBX:
    0000000000000002 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000000     RBP: ffffffff8311af80 R08: 0000000000000020 R09: 00000000c2eda353 R10: ffff88812be2bbc8 R11:
    000000001faab533 R12: ffff88885fb049c8 R13: ffff88812be2bbc8 R14: 0000000000000000 R15: ffff88811896ae00     FS: 0000000000000000(0000) GS:ffff8888dca82000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000     CR0: 0000000080050033 CR2: ffffffff000002c8 CR3: 0000000243050002 CR4: 0000000000372eb0 DR0:
    0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0     DR7: 0000000000000400 Call Trace: <IRQ> ? try_to_wake_up+0x108/0x4c0 ? udp4_lib_lookup2+0xbe/0x150 ?     udp_lib_lport_inuse+0x100/0x100 ? __udp4_lib_lookup+0x2b0/0x410
    __xfrm_policy_check2.constprop.0+0x11e/0x130 udp_queue_rcv_one_skb+0x1d/0x530     udp_unicast_rcv_skb+0x76/0x90 __udp4_lib_rcv+0xa64/0xe90 ip_protocol_deliver_rcu+0x20/0x130     ip_local_deliver_finish+0x75/0xa0 ip_local_deliver+0xc1/0xd0 ? ip_protocol_deliver_rcu+0x130/0x130     ip_sublist_rcv+0x1f9/0x240 ? ip_rcv_finish_core+0x430/0x430 ip_list_rcv+0xfc/0x130
    __netif_receive_skb_list_core+0x181/0x1e0 netif_receive_skb_list_internal+0x200/0x360 ?     mlx5e_build_rx_skb+0x1bc/0xda0 [mlx5_core] gro_receive_skb+0xfd/0x210     mlx5e_handle_rx_cqe_mpwrq+0x141/0x280 [mlx5_core] mlx5e_poll_rx_cq+0xcc/0x8e0 [mlx5_core] ?     mlx5e_handle_rx_dim+0x91/0xd0 [mlx5_core] mlx5e_napi_poll+0x114/0xab0 [mlx5_core] __napi_poll+0x25/0x170     net_rx_action+0x32d/0x3a0 ? mlx5_eq_comp_int+0x8d/0x280 [mlx5_core] ? notifier_call_chain+0x33/0xa0     handle_softirqs+0xda/0x250 irq_exit_rcu+0x6d/0xc0 common_interrupt+0x81/0xa0 </IRQ> (CVE-2025-38590)

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

ID	Name	Product	Family	Severity
266176	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2025-1208)	Nessus	Amazon Linux Local Security Checks	high
266148	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-1210)	Nessus	Amazon Linux Local Security Checks	medium
260085	Linux Distros Unpatched Vulnerability : CVE-2025-38590	Nessus	Misc.	medium

Detections

Analytics

CVE-2025-38590

medium

Tenable Plugins

high

medium

medium