CVE-2023-53372
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.38% probability · 31th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/32832a2caf82663870126c5186cf8f86c8b2a649Patch
- https://git.kernel.org/stable/c/4fbd094d4131a10d06a45d64158567052a35b3f4Patch
- https://git.kernel.org/stable/c/5c9367ac5a22d71841bcd00130f9146c9b227d57Patch
- https://git.kernel.org/stable/c/6109f5b13ce3e3e537db6f18976ec0e9118d1c6fPatch
- https://git.kernel.org/stable/c/79b28f42214a3d0d6a8c514db3602260bd5d6cb5Patch
- https://git.kernel.org/stable/c/ad831a7079c99c01e801764b53bc9997c2e9c0f7Patch
- https://git.kernel.org/stable/c/ad988e9b5ff04607e624a459209e8c2d0c15fc73Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.