{"id":"CVE-2024-39490","summary":"ipv6: sr: fix missing sk_buff release in seg6_input_core","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: sr: fix missing sk_buff release in seg6_input_core\n\nThe seg6_input() function is responsible for adding the SRH into a\npacket, delegating the operation to the seg6_input_core(). This function\nuses the skb_cow_head() to ensure that there is sufficient headroom in\nthe sk_buff for accommodating the link-layer header.\nIn the event that the skb_cow_header() function fails, the\nseg6_input_core() catches the error but it does not release the sk_buff,\nwhich will result in a memory leak.\n\nThis issue was introduced in commit af3b5158b89d (\"ipv6: sr: fix BUG due\nto headroom too small after SRH push\") and persists even after commit\n7a3f5b0de364 (\"netfilter: add netfilter hooks to SRv6 data plane\"),\nwhere the entire seg6_input() code was refactored to deal with netfilter\nhooks.\n\nThe proposed patch addresses the identified memory leak by requiring the\nseg6_input_core() function to release the sk_buff in the event that\nskb_cow_head() fails.","modified":"2026-03-20T12:37:16.612993Z","published":"2024-07-10T07:14:09.667Z","related":["SUSE-SU-2024:2802-1","SUSE-SU-2024:2892-1","SUSE-SU-2024:2894-1","SUSE-SU-2024:2896-1","SUSE-SU-2024:2901-1","SUSE-SU-2024:2939-1","SUSE-SU-2024:2940-1","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/2024/39xxx/CVE-2024-39490.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/5447f9708d9e4c17a647b16a9cb29e9e02820bd9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8f1fc3b86eaea70be6abcae2e9aa7e7b99453864"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e8688218e38111ace457509d8f0cad75f79c1a7a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f4df8c7670a73752201cbde215254598efdf6ce8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f5fec1588642e415a3d72e02140160661b303940"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39490.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-39490"},{"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":"af3b5158b89d3bab9be881113417558c71b71ca4"},{"fixed":"e8688218e38111ace457509d8f0cad75f79c1a7a"},{"fixed":"8f1fc3b86eaea70be6abcae2e9aa7e7b99453864"},{"fixed":"f4df8c7670a73752201cbde215254598efdf6ce8"},{"fixed":"f5fec1588642e415a3d72e02140160661b303940"},{"fixed":"5447f9708d9e4c17a647b16a9cb29e9e02820bd9"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-39490.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}