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CVE-2023-53372 is an out-of-bounds access vulnerability in the Linux kernel SCTP implementation's handling of I-FORWARD-TSN skip entries. While _sctp_walk_ifwdtsn traverses the entries, sctp_ifwdtsn_skip validated only that the current position was before the end of the SCTP chunk. A trailing position can have fewer bytes remaining than required for struct sctp_ifwdtsn_skip; dereferencing it as that structure can therefore read beyond the chunk boundary. The fix requires sufficient remaining data for a complete skip structure by bounding the position against the chunk end minus sizeof(struct sctp_ifwdtsn_skip), consistent with sctp_fwdtsn_skip.
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A Linux kernel vulnerability involving a potential overflow in sctp_ifwdtsn_skip.
A Linux kernel SCTP vulnerability involving a potential overflow/out-of-bounds access in sctp_ifwdtsn_skip when traversing ifwdtsn skips and insufficient remaining chunk data is dereferenced as struct sctp_ifwdtsn_skip.
A Linux kernel SCTP potential overflow vulnerability in sctp_ifwdtsn_skip fixed by this advisory.
Linux kernel vulnerability addressed by RHSA-2024:0575; no further technical detail is provided.
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Cross-references every affected SKU, including bundled OEM variants.
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