{"id":"CVE-2024-53206","summary":"tcp: Fix use-after-free of nreq in reqsk_timer_handler().","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: Fix use-after-free of nreq in reqsk_timer_handler().\n\nThe cited commit replaced inet_csk_reqsk_queue_drop_and_put() with\n__inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler().\n\nThen, oreq should be passed to reqsk_put() instead of req; otherwise\nuse-after-free of nreq could happen when reqsk is migrated but the\nretry attempt failed (e.g. due to timeout).\n\nLet's pass oreq to reqsk_put().","modified":"2026-04-02T12:23:00.322948Z","published":"2024-12-27T13:49:52.131Z","related":["SUSE-SU-2025:0117-1","SUSE-SU-2025:0153-1","SUSE-SU-2025:0154-1","SUSE-SU-2025:0201-1","SUSE-SU-2025:0201-2","SUSE-SU-2025:0203-1","SUSE-SU-2025:0229-1","SUSE-SU-2025:0231-1","SUSE-SU-2025:0289-1","SUSE-SU-2025:20165-1","SUSE-SU-2025:20166-1","SUSE-SU-2025:20248-1","SUSE-SU-2025:20249-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53206.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2dcc86fefe09ac853158afd96b60d544af115dc5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65ed89cad1f57034c256b016e89e8c0a4ec7c65b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6d845028609a4af0ad66f499ee0bd5789122b067"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9a3c1ad93e6fba67b3a637cfa95a57a6685e4908"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c31e72d021db2714df03df6c42855a1db592716c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d0eb14cb8c08b00c36a3d5dc57a6f428b301f721"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53206.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-53206"},{"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":"8459d61fbf24967839a70235165673148c7c7f17"},{"fixed":"2dcc86fefe09ac853158afd96b60d544af115dc5"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5071beb59ee416e8ab456ac8647a4dabcda823b1"},{"fixed":"9a3c1ad93e6fba67b3a637cfa95a57a6685e4908"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"997ae8da14f1639ce6fb66a063dab54031cd61b3"},{"fixed":"65ed89cad1f57034c256b016e89e8c0a4ec7c65b"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"51e34db64f4e43c7b055ccf881b7f3e0c31bb26d"},{"fixed":"d0eb14cb8c08b00c36a3d5dc57a6f428b301f721"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e8c526f2bdf1845bedaf6a478816a3d06fa78b8f"},{"fixed":"6d845028609a4af0ad66f499ee0bd5789122b067"},{"fixed":"c31e72d021db2714df03df6c42855a1db592716c"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"106e457953315e476b3642ef24be25ed862aaba3"},{"last_affected":"c964bf65f80a14288d767023a1b300b30f5b9cd0"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-53206.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}