Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: sctp: fix auth_hmacs array size in struct sctp_cookie The auth_hmacs array in struct sctp_cookie is supposed to store a complete SCTP_AUTH_HMAC_ALGO parameter, which consists of a struct sctp_paramhdr followed by N HMAC identifiers. However, the array size was calculated using an extra 2 bytes instead of sizeof(struct sctp_paramhdr), which is 4 bytes. When four HMAC identifiers are configured, the HMAC-ALGO parameter stored in the endpoint is larger than the auth_hmacs buffer in the cookie. As a result, sctp_association_init() copies beyond the end of auth_hmacs when initializing the association, corrupting the adjacent auth_chunks field. This can lead to an invalid HMAC identifier being accepted and later cause an out-of-bounds read in sctp_auth_get_hmac(). Fix the array size calculation by including the full SCTP parameter header size.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1f485649f52929d9937b346a920a522a7363e202 before 317731d01b03c529809df36d3a7d149677a8729d; affected 1f485649f52929d9937b346a920a522a7363e202 before 0528485f27016a42804abe01aa61b39d85fa803e; affected 1f485649f52929d9937b346a920a522a7363e202 before ee5e65964f456adfe14d526fba0bd055de98ecf3; affected 1f485649f52929d9937b346a920a522a7363e202 before 0b4414e43e0861d67276031cc21401d7e87de3da; affected 1f485649f52929d9937b346a920a522a7363e202 before d0a59ba58578e2b330fff80a44fe519f3ba7d8c7; affected 1f485649f52929d9937b346a920a522a7363e202 before a8d20ba0ab518c9ccbcde258f25fc1ee6e51d5db; affected 1f485649f52929d9937b346a920a522a7363e202 before 3aa40c3bccac2312ea7cf97f329190637f972b5d; affected 1f485649f52929d9937b346a920a522a7363e202 before e0b5252a59383b77d1b8dbeda00b7184dd95f4d3 |
| Linux / Linux | affected 2.6.24; unaffected 0 before 2.6.24; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.148 through 6.6.*; unaffected 6.12.101 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/317731d01b03c529809df36d3a7d149677a8729d
- https://git.kernel.org/stable/c/0528485f27016a42804abe01aa61b39d85fa803e
- https://git.kernel.org/stable/c/ee5e65964f456adfe14d526fba0bd055de98ecf3
- https://git.kernel.org/stable/c/0b4414e43e0861d67276031cc21401d7e87de3da
- https://git.kernel.org/stable/c/d0a59ba58578e2b330fff80a44fe519f3ba7d8c7
- https://git.kernel.org/stable/c/a8d20ba0ab518c9ccbcde258f25fc1ee6e51d5db
- https://git.kernel.org/stable/c/3aa40c3bccac2312ea7cf97f329190637f972b5d
- https://git.kernel.org/stable/c/e0b5252a59383b77d1b8dbeda00b7184dd95f4d3
ADP enrichment
No English description supplied.
No references supplied.