VULNERABILITY INTELLIGENCE
CVE-2021-47190
CVSS score5.5 MEDIUM
EPSS probability0.23%
CISA KEVNot currently listed
Published2024-04-10
Last modified2026-06-17
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.