CVE-2026-90409 (GCVE-0-2026-90409)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-10-21 12:51
VLAI
Title
drm/panthor: Add vm_bind region with kbo range overlap check
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Add vm_bind region with kbo range overlap check When a VM is created, caller has to specify the range of the address space carve-out set aside for mapping kernel BO's. That means vm_bind mappings of UM-exposed BO's should not intersect with that region, but at the moment we're not checking this. At first, I thought of giving these values to drm_gpuvm_init() through its reserve_{offset, range} arguments, but it turns out that is meant for VM address spans that are not managed through the usual drm_gpuvm split/merge circuit, so storing the end of the user VA range at VM creation time and doing a quick check in the vm_bind ioctl path was the simplest workaround. The new check also makes sure vm_bind range doesn't overflow the size of a 64-bit unsigned integer. That was already being done further down the call stack inside drm_gpuvm_sm_map -> drm_gpuvm_range_valid, but it's best to fail early in the driver before GPUVM functions are invoked so that we won't waste time allocating vm_bind context resources.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6649 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 647810ec247641eb5aec8caef818919a4518a0b1 , < 276753aaad65e6f7dac7989a600c1c2d3a382c1a (git)
Affected: 647810ec247641eb5aec8caef818919a4518a0b1 , < f2be47fa8e225968eb66863657143fe900ec4bca (git)
Affected: 647810ec247641eb5aec8caef818919a4518a0b1 , < 761cf9c63274a5b711c3dc829601723215710d2d (git)
Affected: 647810ec247641eb5aec8caef818919a4518a0b1 , < 985f5e12f3cdf43030e13c2bbd154913133b5c3f (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.114 , ≤ 6.12.* (semver)
Unaffected: 6.18.57 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
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          "programFiles": [
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}



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