CVE-2022-49640

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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
2026-03-20T12:24:42.559729Z
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

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
Introduced
61d9b56a89208d8cccd0b4cfec7e6959717e16e3
Fixed
e3a2144b3b6bf9ecafd91087c8b8b48171ec19df
Fixed
40e0477a7371d101c55b69d9c32a7a1ed82ab5ea
Fixed
b60eddf98b9716651069dfda296c91311a7a6293
Fixed
2d3b559df3ed39258737789aae2ae7973d205bc1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49640.json"