Kernel memory disclosure or panic via client ID
Published May 1, 2024 · Updated Aug 5, 2026
Out-of-bounds read in the Linux amdgpu MMHUB handler allows local users to disclose kernel memory or panic the host via GPU work. The MMHUB v3.3 fault-status logger uses attacker-controlled client ID 0x140 to index a 31-entry name table, then passes the out-of-range value to dev_err as a string pointer. Access to an AMD GPU DRM render node is required; the resulting log dereference exposes kernel memory or faults in interrupt context, with no write primitive.
Summary
What happened
Out-of-bounds read in the Linux amdgpu MMHUB handler allows local users to disclose kernel memory or panic the host via GPU work. The MMHUB v3.3 fault-status logger uses attacker-controlled client ID 0x140 to index a 31-entry name table, then passes the out-of-range value to dev_err as a string pointer. Access to an AMD GPU DRM render node is required; the resulting log dereference exposes kernel memory or faults in interrupt context, with no write primitive.
The record
- CVE
- CVE-2024-27029
- Published
- May 1, 2024
- Updated
- Aug 5, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 1, 2024CVE publishedPublication date reported by the CVE source.
- Aug 5, 2026Record 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=6.7
- Affected versionversion=aba2be41470a11629c8378c3651323d7e5416df6 <1f24b3040f2b6ffcb97151fabb3070328254d923
- Affected versionversion=aba2be41470a11629c8378c3651323d7e5416df6 <6540ff6482c1a5a6890ae44b23d0852ba1986d9e
- Affected versionversion=aba2be41470a11629c8378c3651323d7e5416df6 <e1e076bda4fd6378ae650f2c6ef1a4ff93c5aea5
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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