Kernel resource leaks via decoder initialization errors
Published Dec 24, 2025 · Updated Dec 24, 2025
Resource leaks in Linux 5.18 through 6.5.2 allow attackers to retain kernel memory through MediaTek video-decoder setup failures. In vdec_msg_queue_init(), the first allocation-failure path leaves wdma_addr.size nonzero so deinitialization skips cleanup, while two later error paths return without releasing allocations. Linux has not published how attackers trigger these failures or whether repeated leaks interrupt service.
Summary
What happened
Resource leaks in Linux 5.18 through 6.5.2 allow attackers to retain kernel memory through MediaTek video-decoder setup failures. In vdec_msg_queue_init(), the first allocation-failure path leaves wdma_addr.size nonzero so deinitialization skips cleanup, while two later error paths return without releasing allocations. Linux has not published how attackers trigger these failures or whether repeated leaks interrupt service.
The record
- CVE
- CVE-2023-54143
- Published
- Dec 24, 2025
- Updated
- Dec 24, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Dec 24, 2025CVE publishedPublication date reported by the CVE source.
- Dec 24, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.18
- Affected versionversion=b199fe46f35c57a415acd4d5295b0f4e35048c11 <451dc187cadd47771e5d9434fe220fad7be84057
- Affected versionversion=b199fe46f35c57a415acd4d5295b0f4e35048c11 <858322c409e0aba8f70810d23f35c482744f007c
- Affected versionversion=b199fe46f35c57a415acd4d5295b0f4e35048c11 <b7dbc27301f560c3b915235c53383155b3512083
- Affected versionversion=b199fe46f35c57a415acd4d5295b0f4e35048c11 <cf10b0bb503c974ba049d6f888b21178be20a962
What conditions does exploitation require?
What is affected?
Published CVSS scores
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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
No sourced classifications are available.
Public exploit references
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Technologies
Your stack
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Your stack
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