CVE-2026-99106 (GCVE-0-2026-99106)

Vulnerability from cvelistv5 – Published: 2026-10-28 10:34 – Updated: 2026-10-30 12:41
VLAI
Title
drm/amdgpu: free the userptr ranges when a CS fails after parser_bos
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: free the userptr ranges when a CS fails after parser_bos amdgpu_cs_parser_bos() allocates an HMM range for every userptr entry of the BO list and looks up the user pages. Those ranges are only freed when amdgpu_cs_parser_bos() itself fails or when amdgpu_cs_submit() checks them under the notifier lock. If amdgpu_cs_patch_jobs(), amdgpu_cs_vm_handling(), amdgpu_cs_sync_rings() or the early part of amdgpu_cs_submit() fails, nothing frees them: neither amdgpu_cs_parser_fini() nor amdgpu_bo_list_free() touch e->range. Each such CS then leaks the range, its hmm_pfns array (8 bytes per page of the userptr BO) and the BO reference the range holds. An IB on a ring that patches the CS in place (e.g. VCN) with an unmapped va_start fails in amdgpu_cs_patch_ibs() and takes this path. Free the ranges on those error paths. Ranges amdgpu_cs_submit() already dropped are NULL, so freeing them again is a no-op. (cherry picked from commit c52a9542ed7cfd527feb938bd0accada2ac8d267)
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6641 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fec8fdb54e8f74d88951c9f998f47bf4f2031fe0 , < e265221019d20fa162b62baec16c44b5b2ea295b (git)
Affected: fec8fdb54e8f74d88951c9f998f47bf4f2031fe0 , < 79179efd1ad4729cf0ff9e15eb9414f883e4aec2 (git)
Affected: fec8fdb54e8f74d88951c9f998f47bf4f2031fe0 , < 6ac46ae5ac561d4fc7d4246ad83d71bed0d9af9a (git)
Affected: fec8fdb54e8f74d88951c9f998f47bf4f2031fe0 , < 2d9d24385201f476a2f754495b71bbac5ba6ea7b (git)
Affected: fec8fdb54e8f74d88951c9f998f47bf4f2031fe0 , < 1b4da805a0ba354a549ce07459c871c17dd94fe0 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.161 , ≤ 6.6.* (semver)
Unaffected: 6.12.115 , ≤ 6.12.* (semver)
Unaffected: 6.18.59 , ≤ 6.18.* (semver)
Unaffected: 7.2.13 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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}



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