Local service interruption via sleeping LED callback
Published Sep 17, 2025 · Updated Sep 17, 2025
Improper locking in the Qualcomm LPG LED driver in Linux 5.19 allows local users to interrupt service through LED brightness changes. The lpg_brightness_set callback acquires a mutex and sleeps even though the LED core invokes brightness_set callbacks from nonblocking atomic contexts. The reachable condition requires supported Qualcomm LPG hardware and an atomic LED trigger such as heartbeat; it produces invalid-context kernel execution and interrupts service.
Summary
What happened
Improper locking in the Qualcomm LPG LED driver in Linux 5.19 allows local users to interrupt service through LED brightness changes. The lpg_brightness_set callback acquires a mutex and sleeps even though the LED core invokes brightness_set callbacks from nonblocking atomic contexts. The reachable condition requires supported Qualcomm LPG hardware and an atomic LED trigger such as heartbeat; it produces invalid-context kernel execution and interrupts service.
The record
- CVE
- CVE-2022-50371
- Published
- Sep 17, 2025
- Updated
- Sep 17, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-667, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 17, 2025CVE publishedPublication date reported by the CVE source.
- Sep 17, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=24e2d05d1b68981f22c984c766fabc5a93c83dba <3031993b3474794ecb71b6f969a3e60e4bda9d8a
- Affected versionversion=24e2d05d1b68981f22c984c766fabc5a93c83dba <380304391fa7fb084745f26b4b9a59f4666520c1
- Affected versionversion=24e2d05d1b68981f22c984c766fabc5a93c83dba <9deba7b51d5ee7a2d93fabb69f9b8189241f90e3
- Affected versionversion=5.19
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo