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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-72413

sctp: fix err_chunk memory leaks in INIT handling

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: sctp: fix err_chunk memory leaks in INIT handling When sctp_verify_init() encounters unrecognized parameters, it allocates an err_chunk to report them. However, this chunk is leaked in several code paths: 1. In sctp_sf_do_5_1B_init(), if security_sctp_assoc_request() fails after sctp_verify_init() has populated err_chunk, the function returns immediately without freeing it. 2. In sctp_sf_do_unexpected_init(), the same leak occurs on the security_sctp_assoc_request() failure path. 3. In sctp_sf_do_unexpected_init(), on the success path after copying unrecognized parameters to the INIT-ACK, the function returns without freeing err_chunk, unlike sctp_sf_do_5_1B_init() which properly frees it. Fix all three leaks by adding sctp_chunk_free(err_chunk) calls before returning in the error paths and on the success path in sctp_sf_do_unexpected_init().

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a8e6a839c0e7ca1da752faaab51e2eafb17483a4affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 43ddbcdc0ed74a8fba4aff5e623ace8135411b93affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 6acedac7a14af71cfe25024ead28e16a070899e4affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 1cae40d423a2042c7970f29c00028951ec20db8aaffected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 94f55994e19e8f0676990b9d5015b58ab6a97e00affected
  • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 9f58a0a4d6c2ed5d341bba64f058f15d1b0c36f2affected

Linux Linux

Default version status: affected

  • 2.6.12affected
  • 0 to < 2.6.12unaffected
  • 6.1.189 to ≤ 6.1.*unaffected
  • 6.6.158 to ≤ 6.6.*unaffected
  • 6.12.111 to ≤ 6.12.*unaffected
  • 6.18.53 to ≤ 6.18.*unaffected
  • 7.1.5 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References