{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-40931","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-07-12T12:17:45.583Z","datePublished":"2024-07-12T12:25:09.778Z","dateUpdated":"2025-11-03T21:57:58.084Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T09:18:11.851Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: ensure snd_una is properly initialized on connect\n\nThis is strictly related to commit fb7a0d334894 (\"mptcp: ensure snd_nxt\nis properly initialized on connect\"). It turns out that syzkaller can\ntrigger the retransmit after fallback and before processing any other\nincoming packet - so that snd_una is still left uninitialized.\n\nAddress the issue explicitly initializing snd_una together with snd_nxt\nand write_seq."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mptcp/protocol.c"],"versions":[{"version":"8fd738049ac3d67a937d36577763b47180aae1ad","lessThan":"208cd22ef5e57f82d38ec11c1a1703f9401d6dde","status":"affected","versionType":"git"},{"version":"8fd738049ac3d67a937d36577763b47180aae1ad","lessThan":"7b9c7fc8600b64a86e4b47b2d190bba380267726","status":"affected","versionType":"git"},{"version":"8fd738049ac3d67a937d36577763b47180aae1ad","lessThan":"f03c46eabb3a67bd2993e237ab5517f00a5f1813","status":"affected","versionType":"git"},{"version":"8fd738049ac3d67a937d36577763b47180aae1ad","lessThan":"f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f","status":"affected","versionType":"git"},{"version":"8fd738049ac3d67a937d36577763b47180aae1ad","lessThan":"ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce","status":"affected","versionType":"git"},{"version":"8fd738049ac3d67a937d36577763b47180aae1ad","lessThan":"8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mptcp/protocol.c"],"versions":[{"version":"5.9","status":"affected"},{"version":"0","lessThan":"5.9","status":"unaffected","versionType":"semver"},{"version":"5.10.221","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.162","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.95","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.35","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.9.6","lessThanOrEqual":"6.9.*","status":"unaffected","versionType":"semver"},{"version":"6.10","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":"5.9","versionEndExcluding":"5.10.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.15.162"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.1.95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.6.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.9.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.10"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde"},{"url":"https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726"},{"url":"https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813"},{"url":"https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f"},{"url":"https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce"},{"url":"https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3"}],"title":"mptcp: ensure snd_una is properly initialized on connect","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T21:57:58.084Z"}},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-40931","role":"CISA 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