CVE-2023-53372

Vulnerability overview

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 product and versions

Product

Linux Linux, linux kernel

Affected versions

>= 0fc2ea922c8ad5520c80f03facbf396c81dce802 < 4fbd094d4131a10d06a45d64158567052a35b3f4, >= 0fc2ea922c8ad5520c80f03facbf396c81dce802 < ad831a7079c99c01e801764b53bc9997c2e9c0f7, >= 0fc2ea922c8ad5520c80f03facbf396c81dce802 < 79b28f42214a3d0d6a8c514db3602260bd5d6cb5, >= 0fc2ea922c8ad5520c80f03facbf396c81dce802 < 6109f5b13ce3e3e537db6f18976ec0e9118d1c6f, >= 0fc2ea922c8ad5520c80f03facbf396c81dce802 < 5c9367ac5a22d71841bcd00130f9146c9b227d57, >= 0fc2ea922c8ad5520c80f03facbf396c81dce802 < ad988e9b5ff04607e624a459209e8c2d0c15fc73, >= 0fc2ea922c8ad5520c80f03facbf396c81dce802 < 32832a2caf82663870126c5186cf8f86c8b2a649, >= 4.16, >= 4.16 < 4.19.281, >= 4.20 < 5.4.241, >= 5.5 < 5.10.178, >= 5.11 < 5.15.108, >= 5.16 < 6.1.25, >= 6.2 < 6.2.12, 6.3

Fixed versions

4.19.281, 5.4.241, 5.10.178, 5.15.108, 6.1.25, 6.2.12

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-787