CVE-2021-47274
kernel: tracing: Correct the length check which causes memory corruption
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 21, 2024
Updated · February 2, 2026
Description
A vulnerability was found in the Linux kernel's tracing system, where improper length checks in the code can lead to memory corruption. This issue can cause kernel crash by allowing out-of-bounds writes when handling trace data, potentially resulting in severe system instability and data loss.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
CVSS / CWE
CVSS 3.1 · 6.4CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE-787 · Out-of-bounds Write