Kernel panic via undersized GPUVA preallocation
Published Dec 4, 2025 · Updated May 11, 2026
Denial of service in the Linux kernel 6.10 Panthor driver allows local users to panic the kernel through a partial GPU VA unmap. panthor_vm_op_ctx_prealloc_vmas reserves one drm_gpuva for an unmap even though a middle-range unmap requires two, leaving panthor_gpuva_sm_step_remap to dereference a NULL object. A local user must be able to issue Panthor VM_BIND operations against an affected GPU context; successful exploitation crashes the host kernel without disclosed data access or modification.
Summary
What happened
Denial of service in the Linux kernel 6.10 Panthor driver allows local users to panic the kernel through a partial GPU VA unmap. panthor_vm_op_ctx_prealloc_vmas reserves one drm_gpuva for an unmap even though a middle-range unmap requires two, leaving panthor_gpuva_sm_step_remap to dereference a NULL object. A local user must be able to issue Panthor VM_BIND operations against an affected GPU context; successful exploitation crashes the host kernel without disclosed data access or modification.
The record
- CVE
- CVE-2025-40225
- Published
- Dec 4, 2025
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 4, 2025CVE publishedPublication date reported by the CVE source.
- May 11, 2026Record 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=6.10
- Affected versionversion=647810ec247641eb5aec8caef818919a4518a0b1 <4eabd0d8791eaf9a7b114ccbf56eb488aefe7b1f
- Affected versionversion=647810ec247641eb5aec8caef818919a4518a0b1 <e9c19d19dd7e08db89cead5b0337c18590dc6645
- Affected versionversion=647810ec247641eb5aec8caef818919a4518a0b1 <efe6dced3512066ebee2cf7c4c38d1c99625814e
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.
Weakness, pattern, technique
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