PT-2021-8167 · Linux+2 · Linux Kernel+2

Ian Rogers · Published 2021-11-13 · Updated 2025-01-07 · CVE-2021-47190

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to a memory leak in the perf env insert btf() function when a duplicate BTF id is encountered. This function does not insert the duplicate id and causes a memory leak. The function has been modified to return a success or error value and free the memory if the insertion did not happen. Additionally, a return value of -1 has been added when an insertion error occurs in perf env fetch btf(). This vulnerability may allow an attacker to cause a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

BDU:2024-09215

CVE-2021-47190

Affected Products

Astra Linux

Linux Kernel

Red Os

References · 22

• https://git.kernel.org/stable/c/11589d3144bc4e272e0aae46ce8156162e99babc · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47190 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47190 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47190 · Security Note
• https://git.kernel.org/stable/c/ab7c3d8d81c511ddfb27823fb07081c96422b56e · Patch
• https://git.kernel.org/stable/c/4924b1f7c46711762fd0e65c135ccfbcfd6ded1f · Patch
• https://git.kernel.org/stable/c/642fc22210a5e59d40b1e4d56d21ec3effd401f2 · Patch
• https://bdu.fstec.ru/vul/2024-09215 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47190 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47190 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-47190 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47190 · Vendor Advisory
• https://lore.kernel.org/linux-cve-announce/2024041034-CVE-2021-47190-0261@gregkh/T/#u · Note
• https://lore.kernel.org/linux-cve-announce/2024041034-CVE-2021-47190-0261@gregkh · Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.82 · Note