Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - serial核心核心修正 xmit_buf 為 NULL 時行為不一致的 PORT_UNKNOWN 中的 handle_tx() 中的無限迴圈 (從未正確初始化的 PORT_UNKNOWN 連接埠會發生此情況)- uart_write_room() 會傳回 kfifo_avail()其可be > 0 - uart_write() 會檢查 xmit_buf 若為 NULL則傳回 0此不一致會造成驅動程式中發生無限迴圈進而依賴 tty_write_room() 來判斷其是否可寫入 while (tty_write_room(tty) > 0) {written = tty-> ops->write(...); // 寫入一律為 0迴圈永不結束 } 例如caif_serial 的 handle_tx() 與 PORT_UNKNOWN 序列連接埠搭配使用時進入無限迴圈造成系統當機。透過使 uart_write_room() 也檢查 xmit_buf 若其為 NULL 則傳回 0 來修正與 uart_write() 一致。Reproducer
    https://gist.github.com/mrpre/d9a694cc0e19828ee3bc3b37983fde13 (CVE-2026-23472)

請注意，Nessus 依賴供應商報告的套件存在。

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - serialcore修复 PORT_UNKNOWN 的 handle_tx() 中的无限循环xmit_buf 为 NULL 时uart_write_room() 和 uart_write() 的行为不一致从未正确初始化的 PORT_UNKNOWN 端口会发生这种情况- uart_write_room() 返回 kfifo_avail() be > 0 - uart_write() 检查 xmit_buf 并且在为空时返回 0 此不一致会导致依赖 tty_write_room() 确定其是否可写入的驱动程序中出现无限循环while (tty_write_room(tty) > 0) {written = tty-> ops->write(...); // write 始终为 0, loop never exit } 例如当用于 PORT_UNKNOWN 串行端口时caif_serial 的 handle_tx() 进入无限循环从而导致系统挂起。修复方法是使 uart_write_room() 也检查 xmit_buf并在为空时返回 0与 uart_write() 一致。Re Producer
    https://gist.github.com/mrpre/d9a694cc0e19828ee3bc3b37983fde13 (CVE-2026-23472)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - シリアルコアxmit_buf が NULL の場合に、PORT_UNKNOWN uart_write_room() と uart_write() が首尾一貫して動作しないように、handle_tx() で無限ループを修正しますこれは適切に初期化されていない PORT_UNKNOWN ポートで発生します - uart_write_room() は、kfifo_avail() を返します。これは、kfifo_avail() を返します。 > 0 - uart_write() は xmit_buf をチェックし、NULL の場合は 0 を返します。この不一致により、tty_write_room() に依存するドライバーで無限ループが発生し、書き込みが可能かどうか確認します: while (tty_write_room(tty) > 0) {written = tty-> ops->write(...); // 書き込まれるのは常に 0 であり、ループは存在しません } たとえば、caif_serial の handle_tx() は、PORT_UNKNOWN シリアルポートと併用されると、無限ループに入り、これによりシステムがハングアップします。uart_write_room() に xmit_buf もチェックさせ、NULL の場合は 0 を返すように修正。これは uart_write() と一貫性があります。Reducer
    https://gist.github.com/mrpre/d9a694cc0e19828ee3bc3b37983fde13 (CVE-2026-23472)

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1596 advisory.

    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:

    net/sched: act_gate: snapshot parameters with RCU on replace (CVE-2026-23245)

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

    tcp: secure_seq: add back ports to TS offset (CVE-2026-23247)

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

    perf/core: Fix refcount bug and potential UAF in perf_mmap (CVE-2026-23248)

    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:

    netfilter: nf_tables: unconditionally bump set->nelems before insertion (CVE-2026-23272)

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

    netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels (CVE-2026-23274)

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

    io_uring: ensure ctx->rings is stable for task work flags manipulation (CVE-2026-23275)

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

    net: add xmit recursion limit to tunnel xmit functions (CVE-2026-23276)

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

    net/sched: teql: fix NULL pointer dereference in iptunnel_xmit on TEQL slave xmit (CVE-2026-23277)

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

    netfilter: nf_tables: always walk all pending catchall elements (CVE-2026-23278)

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

    smb: client: fix oops due to uninitialised var in smb2_unlink() (CVE-2026-23282)

    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:

    bpf: Fix race in devmap on PREEMPT_RT (CVE-2026-23294)

    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:

    net: annotate data-races around sk->sk_{data_ready,write_space} (CVE-2026-23302)

    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:

    tracing: Add NULL pointer check to trigger_data_free() (CVE-2026-23309)

    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:

    perf/core: Fix invalid wait context in ctx_sched_in() (CVE-2026-23311)

    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:

    mptcp: pm: in-kernel: always mark signal+subflow endp as used (CVE-2026-23321)

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

    ipmi: Fix use-after-free and list corruption on sender error (CVE-2026-23322)

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

    xsk: Fix fragment node deletion to prevent buffer leak (CVE-2026-23326)

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

    libie: don't unroll if fwlog isn't supported (CVE-2026-23329)

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

    udp: Unhash auto-bound connected sk from 4-tuple hash table when disconnected. (CVE-2026-23331)

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

    cpufreq: intel_pstate: Fix crash during turbo disable (CVE-2026-23332)

    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:

    bpf: Fix race in cpumap on PREEMPT_RT (CVE-2026-23342)

    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:

    arm64: gcs: Do not set PTE_SHARED on GCS mappings if FEAT_LPA2 is enabled (CVE-2026-23345)

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

    arm64: io: Extract user memory type in ioremap_prot() (CVE-2026-23346)

    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:

    ata: libata: cancel pending work after clearing deferred_qc (CVE-2026-23355)

    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:

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

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

    drm/client: Do not destroy NULL modes (CVE-2026-23366)

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

    net: phy: register phy led_triggers during probe to avoid AB-BA deadlock (CVE-2026-23368)

    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:

    mm: thp: deny THP for files on anonymous inodes (CVE-2026-23375)

    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:

    netfilter: nf_tables: clone set on flush only (CVE-2026-23385)

    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:

    netfilter: xt_CT: drop pending enqueued packets on template removal (CVE-2026-23391)

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

    netfilter: nf_tables: release flowtable after rcu grace period on error (CVE-2026-23392)

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

    nfnetlink_osf: validate individual option lengths in fingerprints (CVE-2026-23397)

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

    icmp: fix NULL pointer dereference in icmp_tag_validation() (CVE-2026-23398)

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

    nf_tables: nft_dynset: fix possible stateful expression memleak in error path (CVE-2026-23399)

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

    netfilter: bpf: defer hook memory release until rcu readers are done (CVE-2026-23412)

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

    clsact: Fix use-after-free in init/destroy rollback asymmetry (CVE-2026-23413)

    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:

    btrfs: free pages on error in btrfs_uring_read_extent() (CVE-2026-23423)

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

    KVM: arm64: Fix ID register initialization for non-protected pKVM guests (CVE-2026-23425)

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

    iommu/sva: Fix crash in iommu_sva_unbind_device() (CVE-2026-23429)

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

    drm/vmwgfx: Don't overwrite KMS surface dirty tracker (CVE-2026-23430)

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

    perf/x86: Move event pointer setup earlier in x86_pmu_enable() (CVE-2026-23435)

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

    net: shaper: protect from late creation of hierarchy (CVE-2026-23436)

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

    net: shaper: protect late read accesses to the hierarchy (CVE-2026-23437)

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

    udp_tunnel: fix NULL deref caused by udp_sock_create6 when CONFIG_IPV6=n (CVE-2026-23439)

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

    net/mlx5e: Fix race condition during IPSec ESN update (CVE-2026-23440)

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

    net/mlx5e: Prevent concurrent access to IPSec ASO context (CVE-2026-23441)

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

    ACPI: processor: Fix previous acpi_processor_errata_piix4() fix (CVE-2026-23443)

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

    igc: fix page fault in XDP TX timestamps handling (CVE-2026-23445)

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

    net/sched: teql: Fix double-free in teql_master_xmit (CVE-2026-23449)

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

    PM: runtime: Fix a race condition related to device removal (CVE-2026-23452)

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

    netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() (CVE-2026-23455)

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

    netfilter: nf_conntrack_h323: fix OOB read in decode_int() CONS case (CVE-2026-23456)

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

    netfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp() (CVE-2026-23457)

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

    netfilter: ctnetlink: fix use-after-free in ctnetlink_dump_exp_ct() (CVE-2026-23458)

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

    btrfs: log new dentries when logging parent dir of a conflicting inode (CVE-2026-23465)

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

    drm/i915/dmc: Fix an unlikely NULL pointer deference at probe (CVE-2026-23467)

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

    serial: core: fix infinite loop in handle_tx() for PORT_UNKNOWN (CVE-2026-23472)

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

    io_uring/poll: fix multishot recv missing EOF on wakeup race (CVE-2026-23473)

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

    spi: fix statistics allocation (CVE-2026-23475)

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

    spi: fix use-after-free on controller registration failure (CVE-2026-31389)

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

    smb: client: fix krb5 mount with username option (CVE-2026-31392)

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

    mm/huge_memory: fix use of NULL folio in move_pages_huge_pmd() (CVE-2026-31397)

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

    mm/rmap: fix incorrect pte restoration for lazyfree folios (CVE-2026-31398)

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

    nvdimm/bus: Fix potential use after free in asynchronous initialization (CVE-2026-31399)

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

    sunrpc: fix cache_request leak in cache_release (CVE-2026-31400)

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

    nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (CVE-2026-31402)

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

    NFSD: Hold net reference for the lifetime of /proc/fs/nfs/exports fd (CVE-2026-31403)

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

    NFSD: Defer sub-object cleanup in export put callbacks (CVE-2026-31404)

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

    xen/privcmd: restrict usage in unprivileged domU (CVE-2026-31788)

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.

  - serial: core: fix infinite loop in handle_tx() for PORT_UNKNOWN uart_write_room() and uart_write() behave     inconsistently when xmit_buf is NULL (which happens for PORT_UNKNOWN ports that were never properly     initialized): - uart_write_room() returns kfifo_avail() which can be > 0 - uart_write() checks xmit_buf     and returns 0 if NULL This inconsistency causes an infinite loop in drivers that rely on tty_write_room()     to determine if they can write: while (tty_write_room(tty) > 0) { written = tty->ops->write(...); //     written is always 0, loop never exits } For example, caif_serial's handle_tx() enters an infinite loop     when used with PORT_UNKNOWN serial ports, causing system hangs. Fix by making uart_write_room() also check     xmit_buf and return 0 if it's NULL, consistent with uart_write(). Reproducer:
    https://gist.github.com/mrpre/d9a694cc0e19828ee3bc3b37983fde13 (CVE-2026-23472)

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
304906	Linux Distros 未修補的弱點：CVE-2026-23472	Nessus	Misc.	2026/4/5	2026/4/7	medium
304906	Linux Distros 未修补的漏洞：CVE-2026-23472	Nessus	Misc.	2026/4/5	2026/4/7	medium
304906	Linux Distros のパッチ未適用の脆弱性: CVE-2026-23472	Nessus	Misc.	2026/4/5	2026/4/7	medium
311340	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1596)	Nessus	Amazon Linux Local Security Checks	2026/4/30	2026/4/30	high
304906	Linux Distros Unpatched Vulnerability : CVE-2026-23472	Nessus	Misc.	2026/4/5	2026/4/7	medium

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