PT-2023-7939 · Linux+10 · Linux Kernel+10
Budimir Markovic
·
Published
2023-11-29
·
Updated
2025-10-03
·
CVE-2023-6931
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation. A perf event's
read size can overflow, leading to an heap out-of-bounds increment or write in perf read group(). This issue may allow an attacker to impact the confidentiality, integrity, and availability of protected information and elevate their privileges in the system.Recommendations
Upgrade past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b to resolve the issue. As a temporary workaround, consider restricting access to the vulnerable
perf read group() function until a patch is available.Exploit
Fix
DoS
LPE
Memory Corruption
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu