Local service interruption via unchecked allocation
Published Dec 14, 2022 · Updated Apr 22, 2025
NULL pointer dereference in Linux Kernel through 5.16-rc6 allows local users to crash the system through the Mali display driver. In malidp_crtc_reset, kzalloc can return NULL, but the code passes &state->base to __drm_atomic_helper_crtc_reset without checking state. Exploitation requires local access and an allocation failure while the Mali DP CRTC reset path runs; the resulting kernel fault interrupts service.
Summary
What happened
NULL pointer dereference in Linux Kernel through 5.16-rc6 allows local users to crash the system through the Mali display driver. In malidp_crtc_reset, kzalloc can return NULL, but the code passes &state->base to __drm_atomic_helper_crtc_reset without checking state. Exploitation requires local access and an allocation failure while the Mali DP CRTC reset path runs; the resulting kernel fault interrupts service.
The record
- CVE
- CVE-2022-3115
- Published
- Dec 14, 2022
- Updated
- Apr 22, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- CWE-476, T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 14, 2022CVE publishedPublication date reported by the CVE source.
- Apr 22, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=Linux 5.16-rc6
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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