Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_multiport: validate range encoding in checkentry ports_match_v1() treats any non-zero pflags entry as the start of a port range and unconditionally consumes the next ports[] element as the range end. The checkentry path currently validates protocol, flags and count, but it does not validate the range encoding itself. As a result, malformed rules can mark the last slot as a range start or place two range starts back to back, leaving ports_match_v1() to step past the last valid ports[] element while interpreting the rule. Reject malformed multiport v1 rules in checkentry by validating that each range start has a following element and that the following element is not itself marked as another range start.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a89ecb6a2ef732d04058d87801e2b6bd7e5c7089 before 8c5bf8f5b478f569191c4a7982de7cd5f5f73c1a; affected a89ecb6a2ef732d04058d87801e2b6bd7e5c7089 before c9749f6232c845e31c21d4cc72200211df15d8a2; affected a89ecb6a2ef732d04058d87801e2b6bd7e5c7089 before b67d638cbee9975c765feb45c126e96ed11ec802; affected a89ecb6a2ef732d04058d87801e2b6bd7e5c7089 before 36bf0d98e180a7c384c8d8a59b0d2d4b80e5eb16; affected a89ecb6a2ef732d04058d87801e2b6bd7e5c7089 before aec14808271f2bf2b656de6ff12dfe73c5fd3b67; affected a89ecb6a2ef732d04058d87801e2b6bd7e5c7089 before 8368ce8eb01f0b91111d814703696e780d0ef12f; affected a89ecb6a2ef732d04058d87801e2b6bd7e5c7089 before 1e4baa853f1cc4227e04f52d6860524707cfb294; affected a89ecb6a2ef732d04058d87801e2b6bd7e5c7089 before ff64c5bfef12461df8450e0f50bb693b5269c720 |
| Linux / Linux | affected 2.6.17; unaffected 0 before 2.6.17; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.136 through 6.6.*; unaffected 6.12.83 through 6.12.*; unaffected 6.18.24 through 6.18.*; unaffected 6.19.14 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/8c5bf8f5b478f569191c4a7982de7cd5f5f73c1a
- https://git.kernel.org/stable/c/c9749f6232c845e31c21d4cc72200211df15d8a2
- https://git.kernel.org/stable/c/b67d638cbee9975c765feb45c126e96ed11ec802
- https://git.kernel.org/stable/c/36bf0d98e180a7c384c8d8a59b0d2d4b80e5eb16
- https://git.kernel.org/stable/c/aec14808271f2bf2b656de6ff12dfe73c5fd3b67
- https://git.kernel.org/stable/c/8368ce8eb01f0b91111d814703696e780d0ef12f
- https://git.kernel.org/stable/c/1e4baa853f1cc4227e04f52d6860524707cfb294
- https://git.kernel.org/stable/c/ff64c5bfef12461df8450e0f50bb693b5269c720
ADP enrichment
No English description supplied.