Not ratedosv:RLSA-2026:97873

    Important: kernel security, bug fix, and enhancement update

    Published Sources: OSV

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    What is affected, what to do

    The available sources name no fixed version. Check the vendor guidance and the linked original advisory.

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    Metrics

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    XIEM Effective CVSS

    No value is available for this vulnerability.

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    CVSS v3

    No value is available for this vulnerability.

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    EPSS score

    No value is available for this vulnerability.

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    Severity
    Not rated
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

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    30.00 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

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    no public PoC known
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

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    Published

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

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    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    • kernel: netlabel: Fix NULL pointer exception caused by CALIPSO on IPv4 sockets (CVE-2025-22063)

    • kernel: can: bcm: add locking for bcm_op runtime updates (CVE-2025-38004)

    • kernel: calipso: Don't call calipso functions for AF_INET sk. (CVE-2025-38147)

    • kernel: thermal: core: Fix thermal zone device registration error path (CVE-2026-43332)

    • kernel: sctp: stream: fully roll back denied add-stream state (CVE-2026-52929)

    • kernel: IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN (CVE-2026-53176)

    • kernel: net/sched: act_api: use RCU with deferred freeing for action lifecycle (CVE-2026-53264)

    • kernel: vsock/virtio: fix zerocopy completion for multi-skb sends (CVE-2026-53365)

    • kernel: USB: serial: mxuport: fix memory corruption with small endpoint (CVE-2026-63899)

    • kernel: bridge: mcast: Fix a possible use-after-free when removing a bridge port (CVE-2026-64032)

    • kernel: usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() (CVE-2026-63962)

    • kernel: net: mana: Fix TOCTOU double-fetch of hwc_msg_id from DMA buffer (CVE-2026-64034)

    • kernel: vsock/virtio: bind uarg before filling zerocopy skb (CVE-2026-63970)

    • kernel: net: mana: validate rx_req_idx to prevent out-of-bounds array access (CVE-2026-64018)

    • kernel: igc: set tx buffer type for SMD frames (CVE-2026-64035)

    • kernel: idpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init() (CVE-2026-64162)

    • kernel: vsock/vmci: fix UAF when peer resets connection during handshake (CVE-2026-64115)

    • kernel: ALSA: hda/cs35l41: Fix firmware load work teardown (CVE-2026-64481)

    • kernel: Kernel: Remote out-of-bounds write in RDMA/siw (CVE-2026-64268)

    • kernel: fuse: re-lock request before returning from fuse_ref_folio() (CVE-2026-64266)

    • kernel: spi: fsl-lpspi: terminate the RX channel on TX prepare failure path (CVE-2026-64303)

    • kernel: writeback: fix race between cgroup_writeback_umount() and inode_switch_wbs() (CVE-2026-64378)

    • kernel: drm/amd/display: set new_stream to NULL after release (CVE-2026-68236)

    • kernel: net/mlx5: Fix MCIA register buffer overflow on 32 dword reads (CVE-2026-68293)

    • kernel: ALSA: seq: close a re-opened queue timer in the destructor (CVE-2026-68202)

    • kernel: Linux kernel: Denial of Service due to use-after-free in act_tunnel_key (CVE-2026-68377)

    • kernel: drm/dp/mst: fix buffer overflows in sideband chunk accumulation (CVE-2026-68278)

    • kernel: vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets (CVE-2026-68299)

    • kernel: drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid() (CVE-2026-68245)

    • kernel: scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE (CVE-2026-72083)

    • kernel: KVM: arm64: vgic: Check the interrupt is still ours before migrating it (CVE-2026-72289)

    • kernel: tipc: require net admin for TIPCv2 netlink mutators (CVE-2026-74283)

    • kernel: Bluetooth: hci_sync: Fix advertising data UAFs (CVE-2026-74509)

    • kernel: Bluetooth: mgmt: fix UAF in pair command cancellation (CVE-2026-74510)

    • kernel: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled (CVE-2026-74515)

    • kernel: udp: fix potential use-after-free in tunnel segmentation (CVE-2026-74705)

    • kernel: xfs: fix exchange-range reflink flag clearing issue with INO1_WRITTEN (CVE-2026-80530)

    • kernel: xfs: bounds-check buffer log item's dirty bitmap (CVE-2026-80536)

    • kernel: drm/vmwgfx: use check_add_overflow for shader size+offset bound (CVE-2026-80887)

    • kernel: smb: client: reject a tree connect response whose byte count is too small (CVE-2026-89631)

    • kernel: net/smc: carry oversized SMC-Rv2 LLC messages in the queue entry (CVE-2026-80985)

    • kernel: openvswitch: Fix CT limit teardown use-after-free (CVE-2026-89488)

    • kernel: entry: Fix seccomp bypass after ptrace with TSYNC (CVE-2026-89603)

    • kernel: vfio/pci: clear vdev->msi_perm after freeing it on init failure (CVE-2026-89777)

    • kernel: scsi: target: iscsi: Reserve a terminator byte for the login payload (CVE-2026-90011)

    • kernel: drm/amdkfd: Add TLB flush after MES queue eviction/suspension (CVE-2026-89811)

    • kernel: PCI/sysfs: Add lockdown checks to legacy I/O and memory handlers (CVE-2026-90315)

    • kernel: perf: Fix addr_filter_ranges lifetime (CVE-2026-93817)

    • kernel: virtio-fs: avoid double-free on failed queue setup (CVE-2026-93827)

    • kernel: kernel: strparser: use-after-free via msg_timer_work rearm after strp_done() cancellation ()

    • kernel: xfrm: hold net_device reference under RCU in bundle creation (CVE-2026-98364)

    • kernel: exec: Cleanup POSIX timers right after de_thread() (CVE-2026-98260)

    • kernel: netfilter: flowtable: hold reference on ct until flow is released (CVE-2026-98320)

    • kernel: ipv4: free inet_opt and ireq_opt after an RCU grace period (CVE-2026-98432)

    • kernel: KVM: arm64: Transfer the hyp stack pages out of the host stage-2 (CVE-2026-98466)

    • kernel: nvmet-auth: fix out-of-bounds write in nvmet_auth_challenge() (CVE-2026-98725)

    • kernel: kernel: xfs: Unauthorized data modification via improper file size exchange handling (CVE-2026-98974)

    Bug Fix(es) and Enhancement(s):

    • Rocky Linux 9.8: Multiuser Kerberized DFS shares fail to mount with UID mount option [rhel-9.9.z] (JIRA:Rocky Linux-254109)

    • Backport request: bonding: only set speed/duplex to unknown, if getting speed failed [rhel-9.9] (JIRA:Rocky Linux-174325)

    • [Rocky Linux-9.9] gfp: include __GFP_NOWARN in GFP_NOWAIT (JIRA:Rocky Linux-249621)

    • gfs2: Get rid of sd_async_glock_wait [rhel-9.9.z] (JIRA:Rocky Linux-254079)

    • TLS-related kernel panics in kernel-5.14.0-741.10.1.el9_9 and higher (JIRA:Rocky Linux-283336)

    • Rocky Linux is missing support for conntrack zone filtering in dump/delete requests (9.10) [rhel-9.9.z] (JIRA:Rocky Linux-291353)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

    Source: OSV (Open Source Vulnerabilities)