Back
CVE-2022-49641
sysctl: Fix data races in proc_douintvec().
Medium4.7EPSS 0.18%
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec(). A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing. This patch changes proc_douintvec() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_douintvec() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.
Weakness
Affected products
- affected e7d316a02f683864a12389f8808570e37fb90aa3 – < d5d54714e329f646bd7af4994fc427d88ee68936
- affected e7d316a02f683864a12389f8808570e37fb90aa3 – < d335db59f7fb3353f56e52371f1ee796ae9c8f09
- affected e7d316a02f683864a12389f8808570e37fb90aa3 – < 630c76850d554d7140232e71b5d1663e88cffb54
- affected e7d316a02f683864a12389f8808570e37fb90aa3 – < 4762b532ec9539755aab61445d5da6e1926ccb99
- affected 70cd763eb1574cac07138be91f474a661e02d694
- affected f4cea51e9a3d536e2ca2b74a958f7c0b4ea733c3
- affected 4.4.24 – < 4.5
- affected 4.7.7 – < 4.8
- affected 4.8
- unaffected < 4.8
- unaffected 5.10.132 – ≤ 5.10.*
- unaffected 5.15.56 – ≤ 5.15.*
- unaffected 5.18.13 – ≤ 5.18.*
- unaffected 5.19 – ≤ *
References (4)
- https://git.kernel.org/stable/c/d5d54714e329f646bd7af4994fc427d88ee68936 (opens in a new tab)
- https://git.kernel.org/stable/c/d335db59f7fb3353f56e52371f1ee796ae9c8f09 (opens in a new tab)
- https://git.kernel.org/stable/c/630c76850d554d7140232e71b5d1663e88cffb54 (opens in a new tab)
- https://git.kernel.org/stable/c/4762b532ec9539755aab61445d5da6e1926ccb99 (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-2022-49641)Record last updated .