CVE-2021-47190
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.
Does this matter?
Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babcPatch
- https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1fPatch
- https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2Patch
- https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56ePatch
- https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babcPatch
- https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1fPatch
- https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2Patch
- https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56ePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.