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Red Hat: CVE-2022-0185: heap overflow in legacy parameter handling (Multiple Advisories)

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Red Hat: CVE-2022-0185: heap overflow in legacy parameter handling (Multiple Advisories)

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
01/19/2022
Created
01/21/2022
Added
01/20/2022
Modified
03/13/2024

Description

A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.

Solution(s)

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

References

  • CVE-2022-0185
  • RHSA-2022:0176
  • RHSA-2022:0186
  • RHSA-2022:0187
  • RHSA-2022:0188
  • RHSA-2022:0231
  • RHSA-2022:0232
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