CVE-2022-50167bpf: fix potential 32-bit overflow when accessing ARRAY map element
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: bpf: fix potential 32-bit overflow when accessing ARRAY map element If BPF array map is bigger than 4GB, element pointer calculation can overflow because both index and elem_size are u32. Fix this everywhere by forcing 64-bit multiplication. Extract this formula into separate small helper and use it consistently in various places. Speculative-preventing formula utilizing index_mask trick is left as is, but explicit u64 casts are added in both places.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from c85d69135a9175c50a823d04d62d932312d037b3 before 063e092534d4c6785228e5b1eb6e9329f66ccbe4; from c85d69135a9175c50a823d04d62d932312d037b3 before 3c7256b880b3a5aa1895fd169a34aa4224a11862; from c85d69135a9175c50a823d04d62d932312d037b3 before 87ac0d600943994444e24382a87aa19acc4cd3d4 | CNA record |
linux linux_kernel linux:linux_kernel | from 5.3 before 5.18.18; from 5.19 before 5.19.2 | NVD |
References
- https://git.kernel.org/stable/c/063e092534d4c6785228e5b1eb6e9329f66ccbe4patch
- https://git.kernel.org/stable/c/3c7256b880b3a5aa1895fd169a34aa4224a11862patch
- https://git.kernel.org/stable/c/87ac0d600943994444e24382a87aa19acc4cd3d4patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.