Potential Overflow Vulnerability in Linux Kernel Affecting SCTP Functionality

CVE-2023-53372

What is CVE-2023-53372?

A vulnerability in the Linux kernel's SCTP handling could result in a potential overflow condition during the traversal of ifwdtsn skips. Specifically, the issue arises when the _sctp_walk_ifwdtsn function checks the position against the end of the chunk. In certain scenarios, the position may be less than the size of the structure sctp_ifwdtsn_skip, leading to a dereference that could cause an overflow. This has been resolved by implementing additional checks to ensure that the position is validated against the effective end of the data chunk, thereby enhancing the safety and integrity of SCTP operations.

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