CVE-2021-47190

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

perf bpf: Avoid memory leak from perf_env__insert_btf()

perf_env__insert_btf() doesn't insert if a duplicate BTF id is encountered and this causes a memory leak. Modify the function to return a success/error value and then free the memory if insertion didn't happen.

v2. Adds a return -1 when the insertion error occurs in perf_env__fetch_btf. This doesn't affect anything as the result is never checked.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-401

Affected software

VendorProductVersions
LinuxLinux>= 3792cb2ff43b1b193136a03ce1336462a827d792, < 642fc22210a5e59d40b1e4d56d21ec3effd401f2; >= 3792cb2ff43b1b193136a03ce1336462a827d792, < 11589d3144bc4e272e0aae46ce8156162e99babc; >= 3792cb2ff43b1b193136a03ce1336462a827d792, < ab7c3d8d81c511ddfb27823fb07081c96422b56e; >= 3792cb2ff43b1b193136a03ce1336462a827d792, < 4924b1f7c46711762fd0e65c135ccfbcfd6ded1f
LinuxLinux5.1

References

Timeline

Published
Apr 10, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2021-47190: Medium severity, CVSS 5.5 | Vulnix