UNKNOWN NVD
CVE-2026-72450
In the Linux kernel, the following vulnerability has been resolved: xfrm: validate selector family and prefixlen during match syzbot reported a shift-out-of-b
In the Linux kernel, the following vulnerability has been resolved:
xfrm: validate selector family and prefixlen during match
syzbot reported a shift-out-of-bounds in xfrm_selector_match()
due to AF_UNSPEC selector with large prefixlen (e.g. 128) matched
against IPv4 flow (when XFRM_STATE_AF_UNSPEC is set).
Fix this by:
- Rejecting mismatched families in xfrm_selector_match.
- Returning false in addr4_match if prefixlen > 32.
- Returning false in addr_match if prefixlen > 128 (prevents overflow).
References
- https://git.kernel.org/stable/c/40f0b1047918539f0b0f795ac65e35336b4c2c78
- https://git.kernel.org/stable/c/5a03a2ee17e8259dde631ed84fd8322db06cb2ae
- https://git.kernel.org/stable/c/6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe
- https://git.kernel.org/stable/c/78783fefdc8f36879b1a17efa0d3195ea5f2dc5f
- https://git.kernel.org/stable/c/87a5bbccc7ff4edb3f42fea387124237d2ba91ee
This unknown severity vulnerability was published on 2026-08-15 via NVD.
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