medium4.7
CVE-2022-49641
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec().
Impact
In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec(). 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() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_douintvec() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 4.4.24 before 4.5 from 4.7.7 before 5.10.132 from 5.11 before 5.15.56 from 5.16 before 5.18.13 Version 5.19 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/4762b532ec9539755aab61445d5da6e1926ccb99
- https://git.kernel.org/stable/c/630c76850d554d7140232e71b5d1663e88cffb54
- https://git.kernel.org/stable/c/d335db59f7fb3353f56e52371f1ee796ae9c8f09
- https://git.kernel.org/stable/c/d5d54714e329f646bd7af4994fc427d88ee68936