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.
Affected products
linux: linux kernel
References7
- git.kernel.org/stable/c/32832a2caf82663870126c5186cf8f86c8b2a649 Patch
- git.kernel.org/stable/c/4fbd094d4131a10d06a45d64158567052a35b3f4 Patch
- git.kernel.org/stable/c/5c9367ac5a22d71841bcd00130f9146c9b227d57 Patch
- git.kernel.org/stable/c/6109f5b13ce3e3e537db6f18976ec0e9118d1c6f Patch
- git.kernel.org/stable/c/79b28f42214a3d0d6a8c514db3602260bd5d6cb5 Patch
- git.kernel.org/stable/c/ad831a7079c99c01e801764b53bc9997c2e9c0f7 Patch
- git.kernel.org/stable/c/ad988e9b5ff04607e624a459209e8c2d0c15fc73 Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 33 · as of 8 November 2026
- CWE
- CWE-787
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