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CVE-2022-50167
bpf: fix potential 32-bit overflow when accessing ARRAY map element
High7.8EPSS 0.27%
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 81% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected c85d69135a9175c50a823d04d62d932312d037b3 – < 2157ac13db8d5763835f1663bdabda6de744cba8
- affected c85d69135a9175c50a823d04d62d932312d037b3 – < f665c56e6836933335e5a4513fc9b0bf47cdf81f
- affected c85d69135a9175c50a823d04d62d932312d037b3 – < 063e092534d4c6785228e5b1eb6e9329f66ccbe4
- affected c85d69135a9175c50a823d04d62d932312d037b3 – < 3c7256b880b3a5aa1895fd169a34aa4224a11862
- affected c85d69135a9175c50a823d04d62d932312d037b3 – < 87ac0d600943994444e24382a87aa19acc4cd3d4
- affected 5.3
- unaffected < 5.3
- unaffected 5.10.273 – ≤ 5.10.*
- unaffected 5.15.224 – ≤ 5.15.*
- unaffected 5.18.18 – ≤ 5.18.*
- unaffected 5.19.2 – ≤ 5.19.*
- unaffected 6.0 – ≤ *
References (5)
- https://git.kernel.org/stable/c/2157ac13db8d5763835f1663bdabda6de744cba8 (opens in a new tab)
- https://git.kernel.org/stable/c/f665c56e6836933335e5a4513fc9b0bf47cdf81f (opens in a new tab)
- https://git.kernel.org/stable/c/063e092534d4c6785228e5b1eb6e9329f66ccbe4 (opens in a new tab)
- https://git.kernel.org/stable/c/3c7256b880b3a5aa1895fd169a34aa4224a11862 (opens in a new tab)
- https://git.kernel.org/stable/c/87ac0d600943994444e24382a87aa19acc4cd3d4 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-50167)Record last updated .