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. 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 v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc	Patch
https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f	Patch
https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2	Patch
https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e	Patch
https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc	Patch
https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f	Patch
https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2	Patch
https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-04-10 19:15

Updated : 2025-01-07 17:11

NVD link : CVE-2021-47190

Mitre link : CVE-2021-47190

CVE.ORG link : CVE-2021-47190

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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