Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing When a listening SCTP server processes a COOKIE_ECHO chunk, the cached peer INIT chunk embedded after the cookie is parsed and its parameters are later walked by sctp_process_init() using sctp_walk_params(). However, the chunk header length of this cached INIT chunk was not validated against the remaining buffer in the COOKIE_ECHO payload. If the length field is inflated, the parameter walk can run beyond the actual received data, leading to out-of-bounds reads and potential memory corruption during later parameter handling (e.g. STATE_COOKIE processing and kmemdup() copies). Add a bounds check in sctp_unpack_cookie() to ensure the cached INIT chunk length does not exceed the available data in the COOKIE_ECHO buffer before it is used.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before cc272185c9a9a4b7febc2de52eeaa3d00f19091e; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before edccbf3d63b0a3362bc916ea72edacc1e1ca456a; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 0861615c28de668669d748ef4eb913ea9262d13b |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 6.18.36 through 6.18.*; unaffected 7.0.13 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/cc272185c9a9a4b7febc2de52eeaa3d00f19091e
- https://git.kernel.org/stable/c/edccbf3d63b0a3362bc916ea72edacc1e1ca456a
- https://git.kernel.org/stable/c/0861615c28de668669d748ef4eb913ea9262d13b
ADP enrichment
No English description supplied.
No references supplied.