Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
a89ecb6a2ef732d04058d87801e2b6bd7e5c7089 to < 8c5bf8f5b478f569191c4a7982de7cd5f5f73c1aaffecteda89ecb6a2ef732d04058d87801e2b6bd7e5c7089 to < c9749f6232c845e31c21d4cc72200211df15d8a2affecteda89ecb6a2ef732d04058d87801e2b6bd7e5c7089 to < b67d638cbee9975c765feb45c126e96ed11ec802affecteda89ecb6a2ef732d04058d87801e2b6bd7e5c7089 to < 36bf0d98e180a7c384c8d8a59b0d2d4b80e5eb16affecteda89ecb6a2ef732d04058d87801e2b6bd7e5c7089 to < aec14808271f2bf2b656de6ff12dfe73c5fd3b67affecteda89ecb6a2ef732d04058d87801e2b6bd7e5c7089 to < 8368ce8eb01f0b91111d814703696e780d0ef12faffecteda89ecb6a2ef732d04058d87801e2b6bd7e5c7089 to < 1e4baa853f1cc4227e04f52d6860524707cfb294affecteda89ecb6a2ef732d04058d87801e2b6bd7e5c7089 to < ff64c5bfef12461df8450e0f50bb693b5269c720affected
Linux Linux
Default version status: affected
2.6.17affected0 to < 2.6.17unaffected5.10.258 to ≤ 5.10.*unaffected5.15.209 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.136 to ≤ 6.6.*unaffected6.12.83 to ≤ 6.12.*unaffected6.18.24 to ≤ 6.18.*unaffected6.19.14 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
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 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗