Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: sunrpc: fix client side handling of tls alerts A security exploit was discovered in NFS over TLS in tls_alert_recv due to its assumption that there is valid data in the msghdr's iterator's kvec. Instead, this patch proposes the rework how control messages are setup and used by sock_recvmsg(). If no control message structure is setup, kTLS layer will read and process TLS data record types. As soon as it encounters a TLS control message, it would return an error. At that point, NFS can setup a kvec backed control buffer and read in the control message such as a TLS alert. Scott found that a msg iterator can advance the kvec pointer as a part of the copy process thus we need to revert the iterator before calling into the tls_alert_recv.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected dea034b963c8901bdcc3d3880c04f0d75c95112f before a55b3d15331859d9fdd261cfa6d34ca2aeb0fb95; affected dea034b963c8901bdcc3d3880c04f0d75c95112f before c36b2fbd60e8f9c6f975522130998608880c93be; affected dea034b963c8901bdcc3d3880c04f0d75c95112f before 3ee397eaaca4fa04db21bb98c8f1d0c6cc525368; affected dea034b963c8901bdcc3d3880c04f0d75c95112f before 3feada5baf4dc96e151ff2ca54630e1d274e5458; affected dea034b963c8901bdcc3d3880c04f0d75c95112f before cc5d59081fa26506d02de2127ab822f40d88bc5a |
| Linux / Linux | affected 6.5; unaffected 0 before 6.5; unaffected 6.6.102 through 6.6.*; unaffected 6.12.42 through 6.12.*; unaffected 6.15.10 through 6.15.*; unaffected 6.16.1 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a55b3d15331859d9fdd261cfa6d34ca2aeb0fb95
- https://git.kernel.org/stable/c/c36b2fbd60e8f9c6f975522130998608880c93be
- https://git.kernel.org/stable/c/3ee397eaaca4fa04db21bb98c8f1d0c6cc525368
- https://git.kernel.org/stable/c/3feada5baf4dc96e151ff2ca54630e1d274e5458
- https://git.kernel.org/stable/c/cc5d59081fa26506d02de2127ab822f40d88bc5a
ADP enrichment
No English description supplied.
No references supplied.