{"id":"CVE-2026-72413","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: fix err_chunk memory leaks in INIT handling\n\nWhen sctp_verify_init() encounters unrecognized parameters, it allocates an\nerr_chunk to report them","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: fix err_chunk memory leaks in INIT handling\n\nWhen sctp_verify_init() encounters unrecognized parameters, it allocates an\nerr_chunk to report them. However, this c…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6acedac7a14af71cfe25024ead28e16a070899e4","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1cae40d423a2042c7970f29c00028951ec20db8a","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 94f55994e19e8f0676990b9d5015b58ab6a97e00","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9f58a0a4d6c2ed5d341bba64f058f15d1b0c36f2","Linux 2.6.12"],"published":"2026-08-15","updated":"2026-09-21","sourceUpdated":"2026-09-21T14:17:17.533","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72413","references":[{"url":"https://git.kernel.org/stable/c/1cae40d423a2042c7970f29c00028951ec20db8a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6acedac7a14af71cfe25024ead28e16a070899e4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/94f55994e19e8f0676990b9d5015b58ab6a97e00","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9f58a0a4d6c2ed5d341bba64f058f15d1b0c36f2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00209,"epssPercentile":0.09831,"ingestedAt":"2026-09-21T13:37:22.843Z","slug":"CVE-2026-72413","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nsctp: fix err_chunk memory leaks in INIT handling\n\nWhen sctp_verify_init() encounters unrecognized parameters, it allocates an\nerr_chunk to report them. However, this chunk is leaked in several code\npaths:\n\n1. In sctp_sf_do_5_1B_init(), if security_sctp_assoc_request() fails after\n   sctp_verify_init() has populated err_chunk, the function returns\n   immediately without freeing it.\n\n2. In sctp_sf_do_unexpected_init(), the same leak occurs on the\n   security_sctp_assoc_request() failure path.\n\n3. In sctp_sf_do_unexpected_init(), on the success path after copying\n   unrecognized parameters to the INIT-ACK, the function returns without\n   freeing err_chunk, unlike sctp_sf_do_5_1B_init() which properly frees\n   it.\n\nFix all three leaks by adding sctp_chunk_free(err_chunk) calls before\nreturning in the error paths and on the success path in\nsctp_sf_do_unexpected_init().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}