CVE-2022-49640
- Source
- https://cve.org/CVERecord?id=CVE-2022-49640
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49640.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-49640
- Downstream
- Related
- Published
- 2025-02-26T02:23:48.206Z
- Modified
- 2026-04-11T12:44:20.852890Z
- Severity
-
- 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- sysctl: Fix data races in proc_douintvec_minmax().
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
sysctl: Fix data races in procdouintvecminmax().
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 procdouintvecminmax() to use READONCE() and WRITEONCE() internally to fix data-races on the sysctl side. For now, procdouintvecminmax() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49640.json" }- References
-
- https://git.kernel.org/stable/c/2d3b559df3ed39258737789aae2ae7973d205bc1
- https://git.kernel.org/stable/c/40e0477a7371d101c55b69d9c32a7a1ed82ab5ea
- https://git.kernel.org/stable/c/b60eddf98b9716651069dfda296c91311a7a6293
- https://git.kernel.org/stable/c/e3a2144b3b6bf9ecafd91087c8b8b48171ec19df
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49640.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-49640
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced61d9b56a89208d8cccd0b4cfec7e6959717e16e3Fixede3a2144b3b6bf9ecafd91087c8b8b48171ec19dfFixed40e0477a7371d101c55b69d9c32a7a1ed82ab5eaFixedb60eddf98b9716651069dfda296c91311a7a6293Fixed2d3b559df3ed39258737789aae2ae7973d205bc1