{"id":"CVE-2024-40931","summary":"mptcp: ensure snd_una is properly initialized on connect","details":"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.","modified":"2026-03-20T12:37:24.359183Z","published":"2024-07-12T12:25:09.778Z","related":["ALSA-2024:7000","ALSA-2024:7001","ALSA-2024:8617","SUSE-SU-2024:2802-1","SUSE-SU-2024:2894-1","SUSE-SU-2024:2896-1","SUSE-SU-2024:2939-1","SUSE-SU-2024:2947-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/40xxx/CVE-2024-40931.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/208cd22ef5e57f82d38ec11c1a1703f9401d6dde"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7b9c7fc8600b64a86e4b47b2d190bba380267726"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f03c46eabb3a67bd2993e237ab5517f00a5f1813"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/40xxx/CVE-2024-40931.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-40931"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8fd738049ac3d67a937d36577763b47180aae1ad"},{"fixed":"208cd22ef5e57f82d38ec11c1a1703f9401d6dde"},{"fixed":"7b9c7fc8600b64a86e4b47b2d190bba380267726"},{"fixed":"f03c46eabb3a67bd2993e237ab5517f00a5f1813"},{"fixed":"f1f0a46f8bb8890b90ab7194f0a0c8fe2a3fb57f"},{"fixed":"ef473bf1dd7e8dd08bcc04b9e2d1bfed69a0a7ce"},{"fixed":"8031b58c3a9b1db3ef68b3bd749fbee2e1e1aaa3"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-40931.json"}}],"schema_version":"1.7.5"}