VULNERABILITY

Huawei EulerOS: CVE-2022-49640: kernel security update

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Huawei EulerOS: CVE-2022-49640: kernel security update

Severity
4
CVSS
(AV:L/AC:M/Au:S/C:N/I:N/A:C)
Published
02/26/2025
Created
06/12/2025
Added
06/11/2025
Modified
06/12/2025

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.

Solution(s)

  • huawei-euleros-2_0_sp13-upgrade-bpftool
  • huawei-euleros-2_0_sp13-upgrade-kernel
  • huawei-euleros-2_0_sp13-upgrade-kernel-abi-stablelists
  • huawei-euleros-2_0_sp13-upgrade-kernel-tools
  • huawei-euleros-2_0_sp13-upgrade-kernel-tools-libs
  • huawei-euleros-2_0_sp13-upgrade-python3-perf

References

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