CVE-2024-50187 (GCVE-0-2024-50187)

Vulnerability from cvelistv5 – Published: 2024-11-08 05:38 – Updated: 2025-11-03 22:26
VLAI?
Title
drm/vc4: Stop the active perfmon before being destroyed
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Stop the active perfmon before being destroyed Upon closing the file descriptor, the active performance monitor is not stopped. Although all perfmons are destroyed in `vc4_perfmon_close_file()`, the active performance monitor's pointer (`vc4->active_perfmon`) is still retained. If we open a new file descriptor and submit a few jobs with performance monitors, the driver will attempt to stop the active performance monitor using the stale pointer in `vc4->active_perfmon`. However, this pointer is no longer valid because the previous process has already terminated, and all performance monitors associated with it have been destroyed and freed. To fix this, when the active performance monitor belongs to a given process, explicitly stop it before destroying and freeing it.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 65101d8c9108201118efa7e08f4e2c57f438deb9 , < 75452da51e2403e14be007df80d133e1443fc967 (git)
Affected: 65101d8c9108201118efa7e08f4e2c57f438deb9 , < 937943c042503dc6087438bf3557f9057a588ba0 (git)
Affected: 65101d8c9108201118efa7e08f4e2c57f438deb9 , < c9adba739d5f7cdc47a7754df4a17b47b1ecf513 (git)
Affected: 65101d8c9108201118efa7e08f4e2c57f438deb9 , < 0b2ad4f6f2bec74a5287d96cb2325a5e11706f22 (git)
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    Linux Linux Affected: 4.17
Unaffected: 0 , < 4.17 (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.57 , ≤ 6.6.* (semver)
Unaffected: 6.11.4 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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