CVE-2023-53372

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux0fc2ea922c8ad5520c80f03facbf396c81dce802 < 4fbd094d4131a10d06a45d64158567052a35b3f4affected
LinuxLinux0fc2ea922c8ad5520c80f03facbf396c81dce802 < ad831a7079c99c01e801764b53bc9997c2e9c0f7affected
LinuxLinux0fc2ea922c8ad5520c80f03facbf396c81dce802 < 79b28f42214a3d0d6a8c514db3602260bd5d6cb5affected
LinuxLinux0fc2ea922c8ad5520c80f03facbf396c81dce802 < 6109f5b13ce3e3e537db6f18976ec0e9118d1c6faffected
LinuxLinux0fc2ea922c8ad5520c80f03facbf396c81dce802 < 5c9367ac5a22d71841bcd00130f9146c9b227d57affected
LinuxLinux0fc2ea922c8ad5520c80f03facbf396c81dce802 < ad988e9b5ff04607e624a459209e8c2d0c15fc73affected
LinuxLinux0fc2ea922c8ad5520c80f03facbf396c81dce802 < 32832a2caf82663870126c5186cf8f86c8b2a649affected
LinuxLinux4.16affected
LinuxLinux0 < 4.16unaffected
LinuxLinux4.19.281 <= 4.19.*unaffected
LinuxLinux5.4.241 <= 5.4.*unaffected
LinuxLinux5.10.178 <= 5.10.*unaffected
LinuxLinux5.15.108 <= 5.15.*unaffected
LinuxLinux6.1.25 <= 6.1.*unaffected
LinuxLinux6.2.12 <= 6.2.*unaffected
LinuxLinux6.3 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References