{"schema_version":"1","data":[{"id":73,"advisory_id":"dc1acbea-7124-43e9-81d3-017e1d3ea892","revision":1,"source_id":"core-kev","source_url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-53362","source_published_at":"2026-08-27T00:00:00+00:00","published_at":"2026-10-24T20:40:06.755199+00:00","extraction_method":"structured","technologies":["core-kev","kernel"],"cve_ids":["CVE-2026-53362"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Linux Kernel Unspecified Vulnerability","summary":"Linux Kernel contains an unspecified vulnerability that can allow for privilege escalation via IPv6 networking subsystem. This vulnerability can impact multiple products, including but not limited to Suse, Red Hat, and other products using Linux. CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","evidence":"kev:CVE-2026-53362","products":[{"name":{"value":"Kernel","evidence":"/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2026-53362","aliases":["CVE-2026-53362"],"affected":[],"modified":"2026-08-27T00:00:00.000Z","provider":"kev","references":["https://www.cisa.gov/known-exploited-vulnerabilities-catalog"],"exploitation":{"cwes":[],"cveID":"CVE-2026-53362","notes":"This vulnerability affects an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: ; https://git.kernel.org/stable/c/14200d435af9a9eeb444f529fc2f689a236b7962; https://git.kernel.org/stable/c/65fb14cbebb0cd0eff903a22d33537ddc8b95769; https://git.kernel.org/stable/c/46f201f8b4c39633a1fa3dc12459f506d470993d; https://git.kernel.org/stable/c/6374fb9edf72c67a118a2c214a0dddd04c921e0a; https://git.kernel.org/stable/c/e9eacf19281ea2498b36291b56c9606118c2d74e; https://git.kernel.org/stable/c/736b380e28d0480c7bc3e022f1950f31fe53a7c5 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-53362","dueDate":"2026-08-30","product":"Kernel","dateAdded":"2026-08-27","vendorProject":"Linux","requiredAction":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","known_exploited":true,"shortDescription":"Linux Kernel contains an unspecified vulnerability that can allow for privilege escalation via IPv6 networking subsystem. This vulnerability can impact multiple products, including but not limited to Suse, Red Hat, and other products using Linux. ","vulnerabilityName":"Linux Kernel Unspecified Vulnerability","knownRansomwareCampaignUse":"Unknown"}},"related_cves":[{"value":"CVE-2026-53362","evidence":"/cveID"}],"security_relevant":true,"severity_evidence":null},"priority":{"reasons":["linked_severity","known_exploited"],"severity":"high","linked_cves":[{"cve":"CVE-2026-53362","metrics":[{"cvssV3_1":{"version":"3.1","baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"scenarios":[{"lang":"en","value":"AV:L - The vulnerable path is IPv6 transmit skb construction reached by a local process using splice/send operations on an AF_INET6 UDP socket. Received network packets do not enter this path, and a remote peer cannot directly set MSG_SPLICE_PAGES.\nAC:L - No race is required; the attacker controls the UDPv6 socket, MSG_MORE/splice sequence, and send sizes needed to create a nonzero fraggap on the paged allocation path. NETIF_F_SG is common on plausible IPv6 interfaces, so the trigger conditions are not unusually restrictive.\nPR:L - Creating a SOCK_DGRAM IPv6 UDP socket and using splice into it requires only an unprivileged local user. The CAP_NET_RAW check in inet6_create applies to SOCK_RAW, not this UDP datagram path.\nUI:N - The attacker directly invokes the local syscalls and socket operations needed to trigger the bug. No victim user action is required.\nS:U - The corruption occurs within the kernel networking stack and impacts the same kernel security authority. It is not a VM escape, IOMMU/DMA bypass, or cross-scope boundary violation.\nC:H - The bug is an out-of-bounds write into skb_shared_info, which contains fragment metadata and pointers used later by networking code. Such attacker-controlled kernel memory corruption can plausibly be leveraged for information disclosure, so confidentiality is High.\nI:H - The fraggap bytes come from attacker-controlled skb data and are copied past skb->end into skb_shared_info. This is an out-of-bounds write to kernel metadata and is scored as High integrity impact.\nA:H - Corrupting skb_shared_info can readily crash or panic the kernel during skb handling, checksum, transmit, or cleanup. The vulnerability is therefore a High availability impact."}]}],"products":[{"name":{"value":"Linux","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]},{"name":{"value":"Linux","evidence":"/containers/cna/affected/1/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"high","source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-53362","relationship":"advisory","known_exploited":false,"relationship_evidence":"/cveID"}],"fix_available":false,"known_exploited":true,"publisher_severity":"unknown"},"context_update":false}],"next_after":73,"next_before":73}