CVE-2021-47190
Linux Kernel Perf bpf Memory Leak
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.
INFO
Published Date :
April 10, 2024, 7:15 p.m.
Last Modified :
Jan. 7, 2025, 5:11 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Linux kernel packages.
- Reboot the system to apply the update.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47190.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47190 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47190
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47190 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47190 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jan. 07, 2025
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NIST CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.1 up to (excluding) 5.4.162 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.82 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.5 Changed Reference Type https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc No Types Assigned https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc Patch Changed Reference Type https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc No Types Assigned https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc Patch Changed Reference Type https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f No Types Assigned https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f Patch Changed Reference Type https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f No Types Assigned https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f Patch Changed Reference Type https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2 No Types Assigned https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2 Patch Changed Reference Type https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2 No Types Assigned https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2 Patch Changed Reference Type https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e No Types Assigned https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e Patch Changed Reference Type https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e No Types Assigned https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc Added Reference https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f Added Reference https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2 Added Reference https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 10, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f [No types assigned]