CVE-2022-50490
bpf: Propagate error from htab_lock_bucket() to userspace
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Propagate error from htab_lock_bucket() to userspace In __htab_map_lookup_and_delete_batch() if htab_lock_bucket() returns -EBUSY, it will go to next bucket. Going to next bucket may not only skip the elements in current bucket silently, but also incur out-of-bound memory access or expose kernel memory to userspace if current bucket_cnt is greater than bucket_size or zero. Fixing it by stopping batch operation and returning -EBUSY when htab_lock_bucket() fails, and the application can retry or skip the busy batch as needed.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.16% · top 94% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Weakness
Affected products
- affected 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 – < 0e13425104903970a5ede853082d3bbb4edec6f3
- affected 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 – < 6bfee6eb3d6b96ae730a542909dd22b5f9f50d58
- affected 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 – < 4f1f39a8f1ce1b24fee6852d7dcd704ce7c4334d
- affected 20b6cc34ea74b6a84599c1f8a70f3315b56a1883 – < 66a7a92e4d0d091e79148a4c6ec15d1da65f4280
- affected 5.11
- unaffected < 5.11
- unaffected 5.15.75 – ≤ 5.15.*
- unaffected 5.19.17 – ≤ 5.19.*
- unaffected 6.0.3 – ≤ 6.0.*
- unaffected 6.1 – ≤ *
References (4)
- https://git.kernel.org/stable/c/0e13425104903970a5ede853082d3bbb4edec6f3 (opens in a new tab)
- https://git.kernel.org/stable/c/6bfee6eb3d6b96ae730a542909dd22b5f9f50d58 (opens in a new tab)
- https://git.kernel.org/stable/c/4f1f39a8f1ce1b24fee6852d7dcd704ce7c4334d (opens in a new tab)
- https://git.kernel.org/stable/c/66a7a92e4d0d091e79148a4c6ec15d1da65f4280 (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-2022-50490)Record last updated .