CVE-2022-49634
sysctl: Fix data-races in proc_dou8vec_minmax().
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data-races in proc_dou8vec_minmax(). 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_dou8vec_minmax() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_dou8vec_minmax() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.
Timeline
ID reserved
By Linux
Published
- 15 months later
· 15 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
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 92% of all CVEs (7 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: Medium 4.7.
Weakness
Affected products
- affected 389dab6142d742f91010f38de0f1f2f440b97e1b – < f177b382c33900d0e5a9766493c11a1074076f78
- affected cb9444130662c6c13022579c861098f212db2562 – < e58b02e445463065b4078bf621561da75197853f
- affected cb9444130662c6c13022579c861098f212db2562 – < 5f776daef0b5354615ec4b4234cd9539ca05f273
- affected cb9444130662c6c13022579c861098f212db2562 – < 7dee5d7747a69aa2be41f04c6a7ecfe3ac8cdf18
- affected 5.13
- unaffected < 5.13
- unaffected 5.15.56 – ≤ 5.15.*
- unaffected 5.18.13 – ≤ 5.18.*
- unaffected 5.19 – ≤ *
References (4)
- https://git.kernel.org/stable/c/f177b382c33900d0e5a9766493c11a1074076f78 (opens in a new tab)
- https://git.kernel.org/stable/c/e58b02e445463065b4078bf621561da75197853f (opens in a new tab)
- https://git.kernel.org/stable/c/5f776daef0b5354615ec4b4234cd9539ca05f273 (opens in a new tab)
- https://git.kernel.org/stable/c/7dee5d7747a69aa2be41f04c6a7ecfe3ac8cdf18 (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-2022-49634)Record last updated .