Description
In the Linux kernel, the following vulnerability has been resolved: sctp: fix a potential overflow in sctp_ifwdtsn_skip Currently, when traversing ifwdtsn skips with _sctp_walk_ifwdtsn, it only checks the pos against the end of the chunk. However, the data left for the last pos may be < sizeof(struct sctp_ifwdtsn_skip), and dereference it as struct sctp_ifwdtsn_skip may cause coverflow. This patch fixes it by checking the pos against "the end of the chunk - sizeof(struct sctp_ifwdtsn_skip)" in sctp_ifwdtsn_skip, similar to sctp_fwdtsn_skip.
Product status
0fc2ea922c8ad5520c80f03facbf396c81dce802 (git) before 4fbd094d4131a10d06a45d64158567052a35b3f4
0fc2ea922c8ad5520c80f03facbf396c81dce802 (git) before ad831a7079c99c01e801764b53bc9997c2e9c0f7
0fc2ea922c8ad5520c80f03facbf396c81dce802 (git) before 79b28f42214a3d0d6a8c514db3602260bd5d6cb5
0fc2ea922c8ad5520c80f03facbf396c81dce802 (git) before 6109f5b13ce3e3e537db6f18976ec0e9118d1c6f
0fc2ea922c8ad5520c80f03facbf396c81dce802 (git) before 5c9367ac5a22d71841bcd00130f9146c9b227d57
0fc2ea922c8ad5520c80f03facbf396c81dce802 (git) before ad988e9b5ff04607e624a459209e8c2d0c15fc73
0fc2ea922c8ad5520c80f03facbf396c81dce802 (git) before 32832a2caf82663870126c5186cf8f86c8b2a649
4.16
Any version before 4.16
4.19.281 (semver)
5.4.241 (semver)
5.10.178 (semver)
5.15.108 (semver)
6.1.25 (semver)
6.2.12 (semver)
6.3 (original_commit_for_fix)
References
git.kernel.org/...c/4fbd094d4131a10d06a45d64158567052a35b3f4
git.kernel.org/...c/ad831a7079c99c01e801764b53bc9997c2e9c0f7
git.kernel.org/...c/79b28f42214a3d0d6a8c514db3602260bd5d6cb5
git.kernel.org/...c/6109f5b13ce3e3e537db6f18976ec0e9118d1c6f
git.kernel.org/...c/5c9367ac5a22d71841bcd00130f9146c9b227d57
git.kernel.org/...c/ad988e9b5ff04607e624a459209e8c2d0c15fc73
git.kernel.org/...c/32832a2caf82663870126c5186cf8f86c8b2a649
