Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: tls: prevent chain-after-chain in plain text SG Sashiko points out that if end = 0 (start != 0) the current code will create a chain link to content type right after the wrap link: This would create a chain where the wrap link points directly to another chain link. The scatterlist API sg_next iterator does not recursively resolve consecutive chain links. meaning this is illegal input to crypto. The wrapping link is unnecessary if end = 0. end is the entry after the last one used so end = 0 means there's nothing pushed after the wrap: end start i v v v [ ]...[ ][ d ][ d ][ d ][ d ][rsv for wrap] Skip the wrapping in this case. TLS 1.3 can use the "wrapping slot" for it's chaining if end = 0. This avoids the chain-after-chain. Move the wrap chaining before marking END and chaining off content type, that feels like more logical ordering to me, but should not matter from functional perspective.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9aaaa56845a06aeabdd597cbe19492dc01f281ec before 49a5faaa471ddcd37b6893970c9916eb836e7c31; affected 9aaaa56845a06aeabdd597cbe19492dc01f281ec before 91359966e247c0244c66d50bbb8e74aefa4321c3; affected 9aaaa56845a06aeabdd597cbe19492dc01f281ec before 410351158dfef2d67fea6603680b3a6013c6ed9d; affected 9aaaa56845a06aeabdd597cbe19492dc01f281ec before acdc12b71c9aa4be5dcd2c8062753c6d2033e235; affected 9aaaa56845a06aeabdd597cbe19492dc01f281ec before 929b1548e63ac72e104c07d8ee8cbbeeba2fa89a; affected 9aaaa56845a06aeabdd597cbe19492dc01f281ec before af855f4c966afafef74faf8390c7b86568c0d46d; affected 9aaaa56845a06aeabdd597cbe19492dc01f281ec before b9c015ef1a7bf1e8dc67f21c6381f36deb2c3a36; affected 9aaaa56845a06aeabdd597cbe19492dc01f281ec before ff26a0e8377dec07e4a7230db7675bed1b9a6d03; affected d529d6c9f7e3aaeac13c4948f79799ccb825f29d; affected 5.4.14 before 5.5 |
| Linux / Linux | affected 5.5; unaffected 0 before 5.5; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.142 through 6.6.*; unaffected 6.12.92 through 6.12.*; unaffected 6.18.34 through 6.18.*; unaffected 7.0.11 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/49a5faaa471ddcd37b6893970c9916eb836e7c31
- https://git.kernel.org/stable/c/91359966e247c0244c66d50bbb8e74aefa4321c3
- https://git.kernel.org/stable/c/410351158dfef2d67fea6603680b3a6013c6ed9d
- https://git.kernel.org/stable/c/acdc12b71c9aa4be5dcd2c8062753c6d2033e235
- https://git.kernel.org/stable/c/929b1548e63ac72e104c07d8ee8cbbeeba2fa89a
- https://git.kernel.org/stable/c/af855f4c966afafef74faf8390c7b86568c0d46d
- https://git.kernel.org/stable/c/b9c015ef1a7bf1e8dc67f21c6381f36deb2c3a36
- https://git.kernel.org/stable/c/ff26a0e8377dec07e4a7230db7675bed1b9a6d03
ADP enrichment
No English description supplied.
No references supplied.