drm/panfrost: Fix GEM handle creation ref-counting
panfrost_gem_create_with_handle() previously returned a BO but with the
only reference being from the handle, which user space could in theory
guess and release, causing a use-after-free. Additionally if the call to
panfrost_gem_mapping_get() in panfrost_ioctl_create_bo() failed then
a(nother) reference on the BO was dropped.
The _create_with_handle() is a problematic pattern, so ditch it and
instead create the handle in panfrost_ioctl_create_bo(). If the call to
panfrost_gem_mapping_get() fails then this means that user space has
indeed gone behind our back and freed the handle. In which case just
return an error code.
No analysis available yet.
No remediation available yet.
Tracking
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| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-29882 | In the Linux kernel, the following vulnerability has been resolved: drm/panfrost: Fix GEM handle creation ref-counting panfrost_gem_create_with_handle() previously returned a BO but with the only reference being from the handle, which user space could in theory guess and release, causing a use-after-free. Additionally if the call to panfrost_gem_mapping_get() in panfrost_ioctl_create_bo() failed then a(nother) reference on the BO was dropped. The _create_with_handle() is a problematic pattern, so ditch it and instead create the handle in panfrost_ioctl_create_bo(). If the call to panfrost_gem_mapping_get() fails then this means that user space has indeed gone behind our back and freed the handle. In which case just return an error code. |
Wed, 14 Jan 2026 19:15:00 +0000
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ssvc
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Fri, 12 Dec 2025 17:00:00 +0000
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| Weaknesses | CWE-416 | |
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:* |
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| Metrics |
cvssV3_1
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cvssV3_1
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Fri, 19 Sep 2025 09:45:00 +0000
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| First Time appeared |
Linux
Linux linux Kernel |
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| Vendors & Products |
Linux
Linux linux Kernel |
Fri, 19 Sep 2025 00:15:00 +0000
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| Metrics |
threat_severity
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cvssV3_1
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Thu, 18 Sep 2025 16:15:00 +0000
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| Description | In the Linux kernel, the following vulnerability has been resolved: drm/panfrost: Fix GEM handle creation ref-counting panfrost_gem_create_with_handle() previously returned a BO but with the only reference being from the handle, which user space could in theory guess and release, causing a use-after-free. Additionally if the call to panfrost_gem_mapping_get() in panfrost_ioctl_create_bo() failed then a(nother) reference on the BO was dropped. The _create_with_handle() is a problematic pattern, so ditch it and instead create the handle in panfrost_ioctl_create_bo(). If the call to panfrost_gem_mapping_get() fails then this means that user space has indeed gone behind our back and freed the handle. In which case just return an error code. | |
| Title | drm/panfrost: Fix GEM handle creation ref-counting | |
| References |
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Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-01-14T19:13:09.937Z
Reserved: 2025-09-17T14:53:07.003Z
Link: CVE-2022-50417
Updated: 2026-01-14T19:10:40.031Z
Status : Modified
Published: 2025-09-18T16:15:45.123
Modified: 2026-01-14T20:15:54.830
Link: CVE-2022-50417
OpenCVE Enrichment
Updated: 2025-09-19T09:35:36Z
EUVD