Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a8e6a839c0e7ca1da752faaab51e2eafb17483a4; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 43ddbcdc0ed74a8fba4aff5e623ace8135411b93; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6acedac7a14af71cfe25024ead28e16a070899e4; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 1cae40d423a2042c7970f29c00028951ec20db8a; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 94f55994e19e8f0676990b9d5015b58ab6a97e00; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9f58a0a4d6c2ed5d341bba64f058f15d1b0c36f2 |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.111 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a8e6a839c0e7ca1da752faaab51e2eafb17483a4
- https://git.kernel.org/stable/c/43ddbcdc0ed74a8fba4aff5e623ace8135411b93
- https://git.kernel.org/stable/c/6acedac7a14af71cfe25024ead28e16a070899e4
- https://git.kernel.org/stable/c/1cae40d423a2042c7970f29c00028951ec20db8a
- https://git.kernel.org/stable/c/94f55994e19e8f0676990b9d5015b58ab6a97e00
- https://git.kernel.org/stable/c/9f58a0a4d6c2ed5d341bba64f058f15d1b0c36f2