CVE-2026-72350
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1b50b8a371e90a5e110f466e4ac02cf6b5f681de < ca7c92d9701249e6daf132087756a88cbf2bb2a3 | affected |
| Linux | Linux | 1b50b8a371e90a5e110f466e4ac02cf6b5f681de < b33b44250d57ab0e5a1e2571b5285fb0d0a7f382 | affected |
| Linux | Linux | 1b50b8a371e90a5e110f466e4ac02cf6b5f681de < 728f479dc0447ae7eaef87926ff49142e415a811 | affected |
| Linux | Linux | 1b50b8a371e90a5e110f466e4ac02cf6b5f681de < 0a8b7a6d763775709c601f584e709ae48bcc000a | affected |
| Linux | Linux | 1b50b8a371e90a5e110f466e4ac02cf6b5f681de < cce42014415cecd98aa49b3950e7b02ee7c81268 | affected |
| Linux | Linux | 1b50b8a371e90a5e110f466e4ac02cf6b5f681de < a597a722fb71a534138c20359b655726622b5f17 | affected |
| Linux | Linux | 1b50b8a371e90a5e110f466e4ac02cf6b5f681de < 00d034fe8230dfc5832fe011ff2d81c1a2cc7a29 | affected |
| Linux | Linux | 1b50b8a371e90a5e110f466e4ac02cf6b5f681de < 64cdf7d30ac18e43df6c48004435febb965809a8 | affected |
| Linux | Linux | 2.6.23 | affected |
| Linux | Linux | 0 < 2.6.23 | unaffected |
| Linux | Linux | 5.10.261 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.212 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.178 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.145 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.97 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.40 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.5 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/ca7c92d9701249e6daf132087756a88cbf2bb2a3
- https://git.kernel.org/stable/c/b33b44250d57ab0e5a1e2571b5285fb0d0a7f382
- https://git.kernel.org/stable/c/728f479dc0447ae7eaef87926ff49142e415a811
- https://git.kernel.org/stable/c/0a8b7a6d763775709c601f584e709ae48bcc000a
- https://git.kernel.org/stable/c/cce42014415cecd98aa49b3950e7b02ee7c81268
- https://git.kernel.org/stable/c/a597a722fb71a534138c20359b655726622b5f17
- https://git.kernel.org/stable/c/00d034fe8230dfc5832fe011ff2d81c1a2cc7a29
- https://git.kernel.org/stable/c/64cdf7d30ac18e43df6c48004435febb965809a8
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