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Red Hat: CVE-2023-0266: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (Multiple Advisories)

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Red Hat: CVE-2023-0266: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
01/30/2023
Created
03/16/2023
Added
03/16/2023
Modified
01/28/2025

Description

A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e

Solution(s)

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

References

  • CVE-2023-0266
  • RHSA-2023:1202
  • RHSA-2023:1203
  • RHSA-2023:1435
  • RHSA-2023:1469
  • RHSA-2023:1470
  • RHSA-2023:1471
  • RHSA-2023:1554
  • RHSA-2023:1556
  • RHSA-2023:1557
  • RHSA-2023:1566
  • RHSA-2023:1584
  • RHSA-2023:1659
  • RHSA-2023:1660
  • RHSA-2023:1662
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