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

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-09-17 16:09
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
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 647810ec247641eb5aec8caef818919a4518a0b1 , < 761cf9c63274a5b711c3dc829601723215710d2d (git)
Affected: 647810ec247641eb5aec8caef818919a4518a0b1 , < 985f5e12f3cdf43030e13c2bbd154913133b5c3f (git)
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Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2026-09-11T19:38:34.812Z",
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Add vm_bind region with kbo range overlap check\n\nWhen a VM is created, caller has to specify the range of the address space\ncarve-out set aside for mapping kernel BO\u0027s. That means vm_bind mappings of\nUM-exposed BO\u0027s should not intersect with that region, but at the moment\nwe\u0027re not checking this.\n\nAt first, I thought of giving these values to drm_gpuvm_init() through its\nreserve_{offset, range} arguments, but it turns out that is meant for VM\naddress spans that are not managed through the usual drm_gpuvm split/merge\ncircuit, so storing the end of the user VA range at VM creation time and\ndoing a quick check in the vm_bind ioctl path was the simplest workaround.\n\nThe new check also makes sure vm_bind range doesn\u0027t overflow the size of a\n64-bit unsigned integer. That was already being done further down the call\nstack inside drm_gpuvm_sm_map -\u003e drm_gpuvm_range_valid, but it\u0027s best to\nfail early in the driver before GPUVM functions are invoked so that we\nwon\u0027t waste time allocating vm_bind context resources."
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        "metrics": {},
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      "title": "SUSE CVE CVE-2026-90409",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-90409.json",
      "version": "2"
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}



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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.