{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23001","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:37:45.938Z","datePublished":"2026-01-25T14:36:15.790Z","dateUpdated":"2026-05-11T21:58:05.192Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:58:05.192Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmacvlan: fix possible UAF in macvlan_forward_source()\n\nAdd RCU protection on (struct macvlan_source_entry)->vlan.\n\nWhenever macvlan_hash_del_source() is called, we must clear\nentry->vlan pointer before RCU grace period starts.\n\nThis allows macvlan_forward_source() to skip over\nentries queued for freeing.\n\nNote that macvlan_dev are already RCU protected, as they\nare embedded in a standard netdev (netdev_priv(ndev)).\n\nhttps: //lore.kernel.org/netdev/695fb1e8.050a0220.1c677c.039f.GAE@google.com/T/#u"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/macvlan.c"],"versions":[{"version":"79cf79abce71eb7dbc40e2f3121048ca5405cb47","lessThan":"8133e85b8a3ec9f10d861e0002ec6037256e987e","status":"affected","versionType":"git"},{"version":"79cf79abce71eb7dbc40e2f3121048ca5405cb47","lessThan":"484919832e2db6ce1e8add92c469e5d459a516b5","status":"affected","versionType":"git"},{"version":"79cf79abce71eb7dbc40e2f3121048ca5405cb47","lessThan":"232afc74a6dde0fe1830988e5827921f5ec9bb3f","status":"affected","versionType":"git"},{"version":"79cf79abce71eb7dbc40e2f3121048ca5405cb47","lessThan":"15f6faf36e162532bec5cc05eb3fc622108bf2ed","status":"affected","versionType":"git"},{"version":"79cf79abce71eb7dbc40e2f3121048ca5405cb47","lessThan":"8518712a2ca952d6da2238c6f0a16b4ae5ea3f13","status":"affected","versionType":"git"},{"version":"79cf79abce71eb7dbc40e2f3121048ca5405cb47","lessThan":"6dbead9c7677186f22b7981dd085a0feec1f038e","status":"affected","versionType":"git"},{"version":"79cf79abce71eb7dbc40e2f3121048ca5405cb47","lessThan":"7470a7a63dc162f07c26dbf960e41ee1e248d80e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/macvlan.c"],"versions":[{"version":"3.18","status":"affected"},{"version":"0","lessThan":"3.18","status":"unaffected","versionType":"semver"},{"version":"5.10.249","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.199","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.162","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.122","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.67","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.7","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.10.249"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"5.15.199"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.1.162"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.6.122"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.12.67"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.18.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.18","versionEndExcluding":"6.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/8133e85b8a3ec9f10d861e0002ec6037256e987e"},{"url":"https://git.kernel.org/stable/c/484919832e2db6ce1e8add92c469e5d459a516b5"},{"url":"https://git.kernel.org/stable/c/232afc74a6dde0fe1830988e5827921f5ec9bb3f"},{"url":"https://git.kernel.org/stable/c/15f6faf36e162532bec5cc05eb3fc622108bf2ed"},{"url":"https://git.kernel.org/stable/c/8518712a2ca952d6da2238c6f0a16b4ae5ea3f13"},{"url":"https://git.kernel.org/stable/c/6dbead9c7677186f22b7981dd085a0feec1f038e"},{"url":"https://git.kernel.org/stable/c/7470a7a63dc162f07c26dbf960e41ee1e248d80e"}],"title":"macvlan: fix possible UAF in macvlan_forward_source()","x_generator":{"engine":"bippy-1.2.0"}}}}