VulnerabilityPublished 21 Oct 2024Updated 4 Nov 2025

CVE-2024-50031: Linux kernel · drm/v3d: Stop the active perfmon before being destroyed

Source GCVE Database

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Not known to be exploited · CVSS 5.5 Medium.

Data as of 29 Oct 2026, 23:46 UTC

CVSS 3.1 base score

5.5Medium

How severe the flaw is on the 0–10 CVSS scale.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector: Local
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 21 Oct 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-3fxp-j2vr-qqgv

What to do

AI-suggested

Until a fix is applied, avoid running kmscube with performance monitors enabled via GALLIUM_HUD or interrupting the process to prevent kernel panics.

Description

CVE-2024-50031 is a vulnerability in the Linux kernel's drm/v3d driver where an active performance monitor is not properly stopped before being destroyed. This can cause a kernel panic when running the kmscube application with performance monitors enabled via GALLIUM_HUD. The issue occurs because the active performance monitor pointer remains stale after the associated process terminates, leading to invalid memory access on subsequent runs. The vulnerability has a medium severity with a CVSS score of 5.5 and impacts system availability due to kernel crashes.

Impact

The vulnerability leads to a kernel panic (system crash) when kmscube is run with performance monitors enabled and interrupted. This results in denial of service affecting system availability. There is no indication of confidentiality or integrity impact. The CVSS score of 5.5 reflects a medium severity with local attack vector, low complexity, and no user interaction required.

Summary

This vulnerability in the Linux kernel drm/v3d driver arises when the active performance monitor is not stopped before being destroyed upon closing the file descriptor. When kmscube is run with performance monitors enabled, interrupting the process leaves a stale pointer to the active perfmon. On subsequent runs, the driver attempts to stop the active perfmon using this invalid pointer, causing a kernel panic due to a level 1 translation fault. The root cause is that although all perfmons are destroyed in v3d_perfmon_close_file(), the active_perfmon pointer is not cleared. The fix involves explicitly stopping the active performance monitor before destroying and freeing it to prevent use-after-free conditions.

References

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