CVE-2022-49289
uaccess: fix integer overflow on access_ok()
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: uaccess: fix integer overflow on access_ok() Three architectures check the end of a user access against the address limit without taking a possible overflow into account. Passing a negative length or another overflow in here returns success when it should not. Use the most common correct implementation here, which optimizes for a constant 'size' argument, and turns the common case into a single comparison.
Timeline
ID reserved
By Linux
Published
- 18 months later
· 18 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 |
|---|---|---|---|
| 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 | 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)
- 0.27% · top 80% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
Affected products
- affected 7567746e1c0d66ac0ef8a9d8816ca694462c7370 – < e65d28d4e9bf90a35ba79c06661a572a38391dec
- affected 7567746e1c0d66ac0ef8a9d8816ca694462c7370 – < 99801e2f457824955da4aadaa035913a6dede03a
- affected 7567746e1c0d66ac0ef8a9d8816ca694462c7370 – < a1ad747fc1a0e06d1bf26b996ee8a56b5c8d02d8
- affected 7567746e1c0d66ac0ef8a9d8816ca694462c7370 – < 222ca305c9fd39e5ed8104da25c09b2b79a516a8
- affected 3.2
- unaffected < 3.2
- unaffected 5.15.32 – ≤ 5.15.*
- unaffected 5.16.18 – ≤ 5.16.*
- unaffected 5.17.1 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References (4)
- https://git.kernel.org/stable/c/e65d28d4e9bf90a35ba79c06661a572a38391dec (opens in a new tab)
- https://git.kernel.org/stable/c/99801e2f457824955da4aadaa035913a6dede03a (opens in a new tab)
- https://git.kernel.org/stable/c/a1ad747fc1a0e06d1bf26b996ee8a56b5c8d02d8 (opens in a new tab)
- https://git.kernel.org/stable/c/222ca305c9fd39e5ed8104da25c09b2b79a516a8 (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-2022-49289)Record last updated .