Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: sctp: auth: verify auth requirement when auth_chunk is NULL sctp_auth_chunk_verify() returns true unconditionally when chunk->auth_chunk is NULL, silently skipping authentication. This is incorrect when: 1. skb_clone() failed in the BH receive path, leaving auth_chunk NULL. In sctp_endpoint_bh_rcv() asoc is NULL for new connections, so the early sctp_auth_recv_cid() check cannot catch this. 2. No AUTH chunk precedes COOKIE-ECHO, so skb_clone() is never called and auth_chunk remains NULL. Fix by checking sctp_auth_recv_cid() when auth_chunk is NULL: if authentication is required, return false to drop the chunk; otherwise continue normally.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bbd0d59809f923ea2b540cbd781b32110e249f6e before a129792b3aef15002746c13522781d92ed3522c3; affected bbd0d59809f923ea2b540cbd781b32110e249f6e before 5a022ac51ad83b4ce6c898f4b9eefc65bd26b247; affected bbd0d59809f923ea2b540cbd781b32110e249f6e before 6caf0e8590c0bf05a76b0d387726adf3a6f3725c; affected bbd0d59809f923ea2b540cbd781b32110e249f6e before ec2e157fc9678a9bc411305a25aec3fd337d7efb; affected bbd0d59809f923ea2b540cbd781b32110e249f6e before 28c5fdce9dd955d2baf5e28987819b6d7cfaf646; affected bbd0d59809f923ea2b540cbd781b32110e249f6e before 18957373920caf5cdaf5cf32e5d1d7a99ca7700a; affected bbd0d59809f923ea2b540cbd781b32110e249f6e before 83f5031f2a6a49d696eb4cc0898345d12f9c6451; affected bbd0d59809f923ea2b540cbd781b32110e249f6e before 8e04823c120b376ef7dab14b60ebf6823aa16c14 |
| 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/a129792b3aef15002746c13522781d92ed3522c3
- https://git.kernel.org/stable/c/5a022ac51ad83b4ce6c898f4b9eefc65bd26b247
- https://git.kernel.org/stable/c/6caf0e8590c0bf05a76b0d387726adf3a6f3725c
- https://git.kernel.org/stable/c/ec2e157fc9678a9bc411305a25aec3fd337d7efb
- https://git.kernel.org/stable/c/28c5fdce9dd955d2baf5e28987819b6d7cfaf646
- https://git.kernel.org/stable/c/18957373920caf5cdaf5cf32e5d1d7a99ca7700a
- https://git.kernel.org/stable/c/83f5031f2a6a49d696eb4cc0898345d12f9c6451
- https://git.kernel.org/stable/c/8e04823c120b376ef7dab14b60ebf6823aa16c14
ADP enrichment
No English description supplied.
No references supplied.