🛡️ CVE-2021-34556

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In check_stack_write_fixed_off and related functions of verifier.c, there is a possible out of bounds read due to side channel information disclosure. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected software

CVE-2021-34556 is recorded against 1 package.

  • :linux-kernel: (from :0 up to :2022-06-05)

Timeline and source

Published on 1 June 2022 and last revised on 11 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

source.android.com (Advisory)
android.googlesource.com (Fix)
android.googlesource.com (Fix)
android.googlesource.com (Fix)

CVE-2021-34556 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit âś… No
Source OSV
Published 2022-06-01
Updated 2026-08-11
Modified 2026-08-11

Affected Packages

Software From version Fixed in
:linux-kernel: :0 :2022-06-05

Similar Threats

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