Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_u32: reject invalid shift counts u32_match_it() executes rule-supplied shift operands on a 32-bit value. A malformed u32 rule can provide a shift count of 32 or more, triggering an undefined shift out-of-bounds during packet evaluation. Validate XT_U32_LEFTSH and XT_U32_RIGHTSH operands in u32_mt_checkentry() and reject malformed rules before they reach the packet path.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/00d034fe8230dfc5832fe011ff2d81c1a2cc7a29
- https://git.kernel.org/stable/c/0a8b7a6d763775709c601f584e709ae48bcc000a
- https://git.kernel.org/stable/c/64cdf7d30ac18e43df6c48004435febb965809a8
- https://git.kernel.org/stable/c/728f479dc0447ae7eaef87926ff49142e415a811
- https://git.kernel.org/stable/c/a597a722fb71a534138c20359b655726622b5f17
- https://git.kernel.org/stable/c/b33b44250d57ab0e5a1e2571b5285fb0d0a7f382
- https://git.kernel.org/stable/c/ca7c92d9701249e6daf132087756a88cbf2bb2a3
- https://git.kernel.org/stable/c/cce42014415cecd98aa49b3950e7b02ee7c81268
FAQ
What is CVE-2026-72350?
CVE-2026-72350 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_u32: reject invalid shift counts u32_match_it() executes rule-supplied shift operands on a 32-bit value. A malformed...
How severe is CVE-2026-72350?
CVE-2026-72350 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-72350?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.