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Red Hat: CVE-2024-35831: kernel: io_uring: Fix release of pinned pages when __io_uaddr_map fails (Multiple Advisories)

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Red Hat: CVE-2024-35831: kernel: io_uring: Fix release of pinned pages when __io_uaddr_map fails (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
05/17/2024
Created
12/06/2024
Added
12/05/2024
Modified
12/05/2024

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring: Fix release of pinned pages when __io_uaddr_map fails Looking at the error path of __io_uaddr_map, if we fail after pinning the pages for any reasons, ret will be set to -EINVAL and the error handler won't properly release the pinned pages. I didn't manage to trigger it without forcing a failure, but it can happen in real life when memory is heavily fragmented.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2024-35831
  • RHSA-2024:9315
  • 查看数 697
  • 已创建
  • 最后回复

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