CVE-2022-49640
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec_minmax().
Does this matter?
Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec_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_douintvec_minmax() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_douintvec_minmax() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.
- CVSS 3.1
- 4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.17% probability · 7th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2d3b559df3ed39258737789aae2ae7973d205bc1Patch
- https://git.kernel.org/stable/c/40e0477a7371d101c55b69d9c32a7a1ed82ab5eaPatch
- https://git.kernel.org/stable/c/b60eddf98b9716651069dfda296c91311a7a6293Patch
- https://git.kernel.org/stable/c/e3a2144b3b6bf9ecafd91087c8b8b48171ec19dfPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.