{"id":"CVE-2025-68188","state":"PUBLISHED","title":"tcp: use dst_dev_rcu() in tcp_fastopen_active_disable_ofo_check()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: use dst_dev_rcu() in tcp_fastopen_active_disable_ofo_check()\n\nUse RCU to avoid a pair of atomic operations and a potential\nUAF on dst_dev()->flags.","publishedAt":"2025-12-16T13:43:10.680Z","updatedAt":"2026-10-30T12:23:07.375Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cf1ef3f0719b4dcb74810ed507e2a2540f9811b4","status":"affected","lessThan":"d3fe882ed33a1e45921764f4615bf82db79d8dcd","versionType":"git"},{"version":"cf1ef3f0719b4dcb74810ed507e2a2540f9811b4","status":"affected","lessThan":"e61dfd906ad027a4ade1f89e5fe706a3fcd52527","versionType":"git"},{"version":"cf1ef3f0719b4dcb74810ed507e2a2540f9811b4","status":"affected","lessThan":"bc2b881a0896c111c1041d8bb1f92a3b3873ace5","versionType":"git"},{"version":"cf1ef3f0719b4dcb74810ed507e2a2540f9811b4","status":"affected","lessThan":"06da08d9355bf8e2070459bbedbe372ccc02cc0e","versionType":"git"},{"version":"cf1ef3f0719b4dcb74810ed507e2a2540f9811b4","status":"affected","lessThan":"b62a59c18b692f892dcb8109c1c2e653b2abc95c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/tcp_fastopen.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.12","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":"6.12.58","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.8","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/tcp_fastopen.c"]}],"references":["https://git.kernel.org/stable/c/d3fe882ed33a1e45921764f4615bf82db79d8dcd","https://git.kernel.org/stable/c/e61dfd906ad027a4ade1f89e5fe706a3fcd52527","https://git.kernel.org/stable/c/bc2b881a0896c111c1041d8bb1f92a3b3873ace5","https://git.kernel.org/stable/c/06da08d9355bf8e2070459bbedbe372ccc02cc0e","https://git.kernel.org/stable/c/b62a59c18b692f892dcb8109c1c2e653b2abc95c"],"weaknesses":[],"ingestedAt":"2026-10-30T12:40:04.423Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68188.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68188","state":"PUBLISHED","datePublished":"2025-12-16T13:43:10.680Z","dateUpdated":"2026-10-30T12:23:07.375Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-16T13:41:40.252Z"},"containers":{"cna":{"title":"tcp: use dst_dev_rcu() in tcp_fastopen_active_disable_ofo_check()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: use dst_dev_rcu() in tcp_fastopen_active_disable_ofo_check()\n\nUse RCU to avoid a pair of atomic operations and a potential\nUAF on dst_dev()->flags."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cf1ef3f0719b4dcb74810ed507e2a2540f9811b4","status":"affected","lessThan":"d3fe882ed33a1e45921764f4615bf82db79d8dcd","versionType":"git"},{"version":"cf1ef3f0719b4dcb74810ed507e2a2540f9811b4","status":"affected","lessThan":"e61dfd906ad027a4ade1f89e5fe706a3fcd52527","versionType":"git"},{"version":"cf1ef3f0719b4dcb74810ed507e2a2540f9811b4","status":"affected","lessThan":"bc2b881a0896c111c1041d8bb1f92a3b3873ace5","versionType":"git"},{"version":"cf1ef3f0719b4dcb74810ed507e2a2540f9811b4","status":"affected","lessThan":"06da08d9355bf8e2070459bbedbe372ccc02cc0e","versionType":"git"},{"version":"cf1ef3f0719b4dcb74810ed507e2a2540f9811b4","status":"affected","lessThan":"b62a59c18b692f892dcb8109c1c2e653b2abc95c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/tcp_fastopen.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.12","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":"6.12.58","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.8","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/tcp_fastopen.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d3fe882ed33a1e45921764f4615bf82db79d8dcd"},{"url":"https://git.kernel.org/stable/c/e61dfd906ad027a4ade1f89e5fe706a3fcd52527"},{"url":"https://git.kernel.org/stable/c/bc2b881a0896c111c1041d8bb1f92a3b3873ace5"},{"url":"https://git.kernel.org/stable/c/06da08d9355bf8e2070459bbedbe372ccc02cc0e"},{"url":"https://git.kernel.org/stable/c/b62a59c18b692f892dcb8109c1c2e653b2abc95c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:23:07.375Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.12.58"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.17.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}