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

  - KVM: x86: Ignore -EBUSY when checking nested events from vcpu_block() Ignore -EBUSY when checking nested     events after exiting a blocking state while L2 is active, as exiting to userspace will generate a spurious     userspace exit, usually with KVM_EXIT_UNKNOWN, and likely lead to the VM's demise. Continuing with the     wakeup isn't perfect either, as *something* has gone sideways if a vCPU is awakened in L2 with an injected     event (or worse, a nested run pending), but continuing on gives the VM a decent chance of surviving     without any major side effects. As explained in the Fixes commits, it _should_ be impossible for a vCPU to     be put into a blocking state with an already-injected event (exception, IRQ, or NMI). Unfortunately,     userspace can stuff MP_STATE and/or injected events, and thus put the vCPU into what should be an     impossible state. Don't bother trying to preserve the WARN, e.g. with an anti-syzkaller Kconfig, as WARNs     can (hopefully) be added in paths where _KVM_ would be violating x86 architecture, e.g. by WARNing if KVM     attempts to inject an exception or interrupt while the vCPU isn't running. (CVE-2026-43265)

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

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1543 advisory.

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

    fs/xattr: missing fdput() in fremovexattr error path (CVE-2024-14027)

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

    audit: add fchmodat2() to change attributes class (CVE-2025-71239)

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

    fs: ntfs3: fix infinite loop in attr_load_runs_range on inconsistent metadata (CVE-2025-71265)

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

    fs: ntfs3: check return value of indx_find to avoid infinite loop (CVE-2025-71266)

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

    fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST (CVE-2025-71267)

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

    fs/buffer: add alert in try_to_free_buffers() for folios without buffers (CVE-2025-71295)

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

    btrfs: do not strictly require dirty metadata threshold for metadata writepages (CVE-2026-23157)

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

    netfilter: nf_tables: fix use-after-free in nf_tables_addchain() (CVE-2026-23231)

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

    espintcp: Fix race condition in espintcp_close() (CVE-2026-23239)

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

    tls: Fix race condition in tls_sw_cancel_work_tx() (CVE-2026-23240)

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

    RDMA/umad: Reject negative data_len in ib_umad_write (CVE-2026-23243)

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

    nvme: fix memory allocation in nvme_pr_read_keys() (CVE-2026-23244)

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

    xfs: check for deleted cursors when revalidating two btrees (CVE-2026-23249)

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

    net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks (CVE-2026-23270)

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

    perf: Fix __perf_event_overflow() vs perf_remove_from_context() race (CVE-2026-23271)

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

    macvlan: observe an RCU grace period in macvlan_common_newlink() error path (CVE-2026-23273)

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

    drbd: fix null-pointer dereference on local read error (CVE-2026-23285)

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

    scsi: target: Fix recursive locking in __configfs_open_file() (CVE-2026-23292)

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

    net: vxlan: fix nd_tbl NULL dereference when IPv6 is disabled (CVE-2026-23293)

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

    scsi: core: Fix refcount leak for tagset_refcnt (CVE-2026-23296)

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

    nfsd: Fix cred ref leak in nfsd_nl_threads_set_doit(). (CVE-2026-23297)

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

    net: ipv6: fix panic when IPv4 route references loopback IPv6 nexthop (CVE-2026-23300)

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

    smb: client: Don't log plaintext credentials in cifs_set_cifscreds (CVE-2026-23303)

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

    ipv6: fix NULL pointer deref in ip6_rt_get_dev_rcu() (CVE-2026-23304)

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

    bpf/bonding: reject vlan+srcmac xmit_hash_policy change when XDP is loaded (CVE-2026-23310)

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

    i40e: Fix preempt count leak in napi poll tracepoint (CVE-2026-23313)

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

    net: ipv4: fix ARM64 alignment fault in multipath hash seed (CVE-2026-23316)

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

    drm/vmwgfx: Return the correct value in vmw_translate_ptr functions (CVE-2026-23317)

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

    bpf: Fix a UAF issue in bpf_trampoline_link_cgroup_shim (CVE-2026-23319)

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

    RDMA/irdma: Fix kernel stack leak in irdma_create_user_ah() (CVE-2026-23335)

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

    net: sched: avoid qdisc_reset_all_tx_gt() vs dequeue race for lockless qdiscs (CVE-2026-23340)

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

    xdp: produce a warning when calculated tailroom is negative (CVE-2026-23343)

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

    netfilter: nft_set_pipapo: split gc into unlink and reclaim phase (CVE-2026-23351)

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

    x86/efi: defer freeing of boot services memory (CVE-2026-23352)

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

    x86/fred: Correct speculative safety in fred_extint() (CVE-2026-23354)

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

    drbd: fix LOGIC BUG in drbd_al_begin_io_nonblock() (CVE-2026-23356)

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

    bpf: Fix stack-out-of-bounds write in devmap (CVE-2026-23359)

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

    nvme: fix admin queue leak on controller reset (CVE-2026-23360)

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

    PCI: dwc: ep: Flush MSI-X write before unmapping its ATU entry (CVE-2026-23361)

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

    can: bcm: fix locking for bcm_op runtime updates (CVE-2026-23362)

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

    i2c: i801: Revert i2c: i801: replace acpi_lock with I2C bus lock (CVE-2026-23369)

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

    net/sched: ets: fix divide by zero in the offload path (CVE-2026-23379)

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

    tracing: Fix WARN_ON in tracing_buffers_mmap_close (CVE-2026-23380)

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

    net: bridge: fix nd_tbl NULL dereference when IPv6 is disabled (CVE-2026-23381)

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

    bpf, arm64: Force 8-byte alignment for JIT buffer to prevent atomic tearing (CVE-2026-23383)

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

    Squashfs: check metadata block offset is within range (CVE-2026-23388)

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

    net/rds: Fix circular locking dependency in rds_tcp_tune (CVE-2026-23419)

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

    cifs: some missing initializations on replay (CVE-2026-31693)

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

    fbcon: check return value of con2fb_acquire_newinfo() (CVE-2026-43123)

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

    pstore: ram_core: fix incorrect success return when vmap() fails (CVE-2026-43124)

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

    RDMA/umem: Fix double dma_buf_unpin in failure path (CVE-2026-43128)

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

    ima: verify the previous kernel's IMA buffer lies in addressable RAM (CVE-2026-43129)

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

    iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode (CVE-2026-43130)

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

    dm-verity: correctly handle dm_bufio_client_create() failure (CVE-2026-43132)

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

    KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation (CVE-2026-43133)

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

    xfrm6: fix uninitialized saddr in xfrm6_get_saddr() (CVE-2026-43139)

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

    mfd: core: Add locking around 'mfd_of_node_list' (CVE-2026-43143)

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

    Revert PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV (CVE-2026-43147)

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

    perf/arm-cmn: Reject unsupported hardware configurations (CVE-2026-43150)

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

    HID: hid-pl: handle probe errors (CVE-2026-43152)

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

    xfs: remove xfs_attr_leaf_hasname (CVE-2026-43153)

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

    xfs: fix freemap adjustments when adding xattrs to leaf blocks (CVE-2026-43158)

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

    iommu/vt-d: Skip dev-iotlb flush for inaccessible PCIe device without scalable mode (CVE-2026-43161)

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

    md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163)

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

    xfrm: always flush state and policy upon NETDEV_UNREGISTER event (CVE-2026-43167)

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

    drm/buddy: Prevent BUG_ON by validating rounded allocation (CVE-2026-43169)

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

    EFI/CPER: don't dump the entire memory region (CVE-2026-43171)

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

    procfs: fix possible double mmput() in do_procmap_query() (CVE-2026-43178)

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

    ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data() (CVE-2026-43186)

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

    xfs: delete attr leaf freemap entries when empty (CVE-2026-43187)

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

    media: v4l2-async: Fix error handling on steps after finding a match (CVE-2026-43189)

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

    netfilter: xt_tcpmss: check remaining length before reading optlen (CVE-2026-43190)

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

    net: consume xmit errors of GSO frames (CVE-2026-43194)

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

    net/mlx5e: Fix scheduling while atomic in IPsec MAC address query (CVE-2026-43199)

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

    APEI/GHES: ARM processor Error: don't go past allocated memory (CVE-2026-43201)

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

    tracing: ring-buffer: Fix to check event length before using (CVE-2026-43210)

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

    PCI: Fix pci_slot_trylock() error handling (CVE-2026-43211)

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

    KVM: x86: Add SRCU protection for reading PDPTRs in __get_sregs2() (CVE-2026-43214)

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

    cifs: Fix locking usage for tcon fields (CVE-2026-43215)

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

    net/rds: No shortcut out of RDS_CONN_ERROR (CVE-2026-43226)

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

    net/rds: Clear reconnect pending bit (CVE-2026-43230)

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

    netfilter: nf_conntrack_h323: fix OOB read in decode_choice() (CVE-2026-43233)

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

    net/sched: act_skbedit: fix divide-by-zero in tcf_skbedit_hash() (CVE-2026-43238)

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

    smb: client: prevent races in ->query_interfaces() (CVE-2026-43239)

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

    x86/kexec: add a sanity check on previous kernel's ima kexec buffer (CVE-2026-43240)

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

    kcm: fix zero-frag skb in frag_list on partial sendmsg error (CVE-2026-43244)

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

    iommu/amd: move wait_on_sem() out of spinlock (CVE-2026-43253)

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

    alpha: fix user-space corruption during memory compaction (CVE-2026-43258)

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

    arm64: Add support for TSV110 Spectre-BHB mitigation (CVE-2026-43261)

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

    KVM: x86: Ignore -EBUSY when checking nested events from vcpu_block() (CVE-2026-43265)

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

    EFI/CPER: don't go past the ARM processor CPER record buffer (CVE-2026-43266)

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

    ceph: supply snapshot context in ceph_zero_partial_object() (CVE-2026-43273)

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

    APEI/GHES: ensure that won't go past CPER allocated record (CVE-2026-43277)

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

    dm: clear cloned request bio pointer when last clone bio completes (CVE-2026-43278)

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

    mailbox: Prevent out-of-bounds access in fw_mbox_index_xlate() (CVE-2026-43281)

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

    drm: Account property blob allocations to memcg (CVE-2026-43287)

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

    ext4: move ext4_percpu_param_init() before ext4_mb_init() (CVE-2026-43288)

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

    kexec: derive purgatory entry from symbol (CVE-2026-43289)

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

    mm/vmalloc: prevent RCU stalls in kasan_release_vmalloc_node (CVE-2026-43292)

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

    libceph: define and enforce CEPH_MAX_KEY_LEN (CVE-2026-43304)

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

    bpf: crypto: Use the correct destructor kfunc type (CVE-2026-43306)

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

    ACPI: processor: Fix NULL-pointer dereference in acpi_processor_errata_piix4() (CVE-2026-43313)

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

    dm: remove fake timeout to avoid leak request (CVE-2026-43314)

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

    KVM: nSVM: Remove a user-triggerable WARN on nested_svm_load_cr3() succeeding (CVE-2026-43315)

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	Published	Updated	Severity
312927	Linux Distros Unpatched Vulnerability : CVE-2026-43265	Nessus	Misc.	5/7/2026	5/29/2026	medium
313522	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1681)	Nessus	Amazon Linux Local Security Checks	5/9/2026	5/20/2026	high
311340	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1596)	Nessus	Amazon Linux Local Security Checks	4/30/2026	5/20/2026	high
305231	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1543)	Nessus	Amazon Linux Local Security Checks	4/7/2026	5/19/2026	high

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