{"id":"CVE-2026-97939","aliases":[],"cve":{"records":[{"id":"CVE-2026-97939","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:18:58.204Z","published":"2026-09-25T10:22:52.332Z","modified":"2026-10-30T12:37:46.833Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:37:46.833Z"}],"references":[{"url":"https://git.kernel.org/stable/c/3e808d8dfebd8f114a747bd90c8f7d2a6fd7474f","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/57c523e95ea2608a19e6bfcd664d641ddf7bc4b4","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/20424f267c9dbdfcade28b2b2306767a7dfb43d1","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/21e0749e8ef272ac7e3eefe0fa488a5983f4b038","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/ec1c6140394ee87127479bc500a3158b125bf07a","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/0264b3ee09b118fec8a5471b4ca288f8ab84722f","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/d0a2e2a4ee6bfe51e398bfb6921a7d0f4c26bc1c","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/b7ee18725f2292ab554aa96a101ae42d45f008bd","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.35","versionEndExcluding":"7.3"}]}]}]}],"prioritization":[]},"title":"ipmr: account multicast table and route memory","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipmr: account multicast table and route memory\n\nA netadmin in a user+net namespace can create many IPv4 and IPv6\nmulticast routing tables with MRT_TABLE and MRT6_TABLE. Each unseen\nid allocates an mr_table via the shared mr_table_alloc(), links it\ninto the per-net list, and leaves it until netns teardown. Those\nobjects were not charged to memcg, so the host unreclaimable slab\ngrows with the table count.\n\nAccount mr_table allocations with GFP_KERNEL_ACCOUNT and mark the\nIPv4/IPv6 MFC caches SLAB_ACCOUNT. This matches the established\nhandling of IP addresses, routes and alternate interface names.\n\nUnresolved MFC entries are still allocated from softIRQ with\nGFP_ATOMIC and are not charged. They expire after 10 seconds and are\nbounded by the socket receive queue; see commit 0079ad8e8dc3\n(\"ipmr: remove hard code cache_resolve_queue_len limit\").","score":null,"severity":"unknown","published":"2026-09-25T10:22:52.332Z","modified":"2026-10-30T12:37:46.833Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"f0ad0860d01e47a3ffd220564c5c653b3afbe962","status":"affected","lessThan":"3e808d8dfebd8f114a747bd90c8f7d2a6fd7474f","versionType":"git"},{"version":"f0ad0860d01e47a3ffd220564c5c653b3afbe962","status":"affected","lessThan":"57c523e95ea2608a19e6bfcd664d641ddf7bc4b4","versionType":"git"},{"version":"f0ad0860d01e47a3ffd220564c5c653b3afbe962","status":"affected","lessThan":"20424f267c9dbdfcade28b2b2306767a7dfb43d1","versionType":"git"},{"version":"f0ad0860d01e47a3ffd220564c5c653b3afbe962","status":"affected","lessThan":"21e0749e8ef272ac7e3eefe0fa488a5983f4b038","versionType":"git"},{"version":"f0ad0860d01e47a3ffd220564c5c653b3afbe962","status":"affected","lessThan":"ec1c6140394ee87127479bc500a3158b125bf07a","versionType":"git"},{"version":"f0ad0860d01e47a3ffd220564c5c653b3afbe962","status":"affected","lessThan":"0264b3ee09b118fec8a5471b4ca288f8ab84722f","versionType":"git"},{"version":"f0ad0860d01e47a3ffd220564c5c653b3afbe962","status":"affected","lessThan":"d0a2e2a4ee6bfe51e398bfb6921a7d0f4c26bc1c","versionType":"git"},{"version":"f0ad0860d01e47a3ffd220564c5c653b3afbe962","status":"affected","lessThan":"b7ee18725f2292ab554aa96a101ae42d45f008bd","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-97939"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"2.6.35","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.35","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-97939"}],"remediation":[],"references":["https://git.kernel.org/stable/c/3e808d8dfebd8f114a747bd90c8f7d2a6fd7474f","https://git.kernel.org/stable/c/57c523e95ea2608a19e6bfcd664d641ddf7bc4b4","https://git.kernel.org/stable/c/20424f267c9dbdfcade28b2b2306767a7dfb43d1","https://git.kernel.org/stable/c/21e0749e8ef272ac7e3eefe0fa488a5983f4b038","https://git.kernel.org/stable/c/ec1c6140394ee87127479bc500a3158b125bf07a","https://git.kernel.org/stable/c/0264b3ee09b118fec8a5471b4ca288f8ab84722f","https://git.kernel.org/stable/c/d0a2e2a4ee6bfe51e398bfb6921a7d0f4c26bc1c","https://git.kernel.org/stable/c/b7ee18725f2292ab554aa96a101ae42d45f008bd"],"sources":[{"name":"CVE","id":"CVE-2026-97939","modified":"2026-10-30T12:37:46.833Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-97939"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-10-30T14:00:48.055Z","kev":{"status":"not-listed","checkedAt":"2026-11-14T21:20:32.434Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}