Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIE_ECHO restores fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM length, HMAC list, or CHUNKS list can then reach association consumers with lengths or identifiers that were never validated against the local backing arrays. A forged RANDOM length can cause out-of-bounds reads during key-vector construction. A forged HMAC identifier also caused a 32-byte write past a zero-length AUTH chunk, providing a primitive for a local privilege escalation chain. Validate the cookie's RANDOM, HMACS, and CHUNKS parameters at the cookie trust boundary before copying them into the association. Reject invalid types, malformed lengths, unsupported HMAC identifiers, HMAC lists without SHA1, and forbidden chunk ids.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1f485649f52929d9937b346a920a522a7363e202 before 4a4410de8dc6903d859c9e1731fc6dcee28bd072; affected 1f485649f52929d9937b346a920a522a7363e202 before 7f17984cfa697613800eb693e183b06884129bd3; affected 1f485649f52929d9937b346a920a522a7363e202 before 88619b117be1daf633ce32210570ce35a0bd1c98; affected 1f485649f52929d9937b346a920a522a7363e202 before 3dbb44d88b1e94dd31fe43588af7437b34b44d56 |
| Linux / Linux | affected 2.6.24; unaffected 0 before 2.6.24; unaffected 6.6.160 through 6.6.*; unaffected 6.12.114 through 6.12.*; unaffected 7.1.10 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/4a4410de8dc6903d859c9e1731fc6dcee28bd072
- https://git.kernel.org/stable/c/7f17984cfa697613800eb693e183b06884129bd3
- https://git.kernel.org/stable/c/88619b117be1daf633ce32210570ce35a0bd1c98
- https://git.kernel.org/stable/c/3dbb44d88b1e94dd31fe43588af7437b34b44d56
ADP enrichment
No English description supplied.
No references supplied.