drm/panthor: Add vm_bind region with kbo range overlap check
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.
CVE-2026-90409
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-90409
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "647810ec247641eb5aec8caef818919a4518a0b1",
"lessThan": "276753aaad65e6f7dac7989a600c1c2d3a382c1a",
"versionType": "git"
},
{
"status": "affected",
"version": "647810ec247641eb5aec8caef818919a4518a0b1",
"lessThan": "f2be47fa8e225968eb66863657143fe900ec4bca",
"versionType": "git"
},
{
"status": "affected",
"version": "647810ec247641eb5aec8caef818919a4518a0b1",
"lessThan": "761cf9c63274a5b711c3dc829601723215710d2d",
"versionType": "git"
},
{
"status": "affected",
"version": "647810ec247641eb5aec8caef818919a4518a0b1",
"lessThan": "985f5e12f3cdf43030e13c2bbd154913133b5c3f",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/panthor/panthor_mmu.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/panthor/panthor_mmu.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90409
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48690 · Revision 1
- Added to Heist Feed
- Publisher date