In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: don't access invalid sched
Since 2320c9e6a768 ("drm/sched: memset() 'job' in drm_sched_job_init()")
accessing job->base.sched can produce unexpected results as the initialisation
of (*job)->base.sched done in amdgpu_job_alloc is overwritten by the
memset.
This commit fixes an issue when a CS would fail validation and would
be rejected after job->num_ibs is incremented. In this case,
amdgpu_ib_free(ring->adev, ...) will be called, which would crash the
machine because the ring value is bogus.
To fix this, pass a NULL pointer to amdgpu_ib_free(): we can do this
because the device is actually not used in this function.
The next commit will remove the ring argument completely.
(cherry picked from commit 2ae520cb12831d264ceb97c61f72c59d33c0dbd7)
Metrics
Affected Vendors & Products
References
History
Tue, 14 Jan 2025 08:45:00 +0000
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threat_severity
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cvssV3_1
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Sat, 11 Jan 2025 12:45:00 +0000
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Description | In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: don't access invalid sched Since 2320c9e6a768 ("drm/sched: memset() 'job' in drm_sched_job_init()") accessing job->base.sched can produce unexpected results as the initialisation of (*job)->base.sched done in amdgpu_job_alloc is overwritten by the memset. This commit fixes an issue when a CS would fail validation and would be rejected after job->num_ibs is incremented. In this case, amdgpu_ib_free(ring->adev, ...) will be called, which would crash the machine because the ring value is bogus. To fix this, pass a NULL pointer to amdgpu_ib_free(): we can do this because the device is actually not used in this function. The next commit will remove the ring argument completely. (cherry picked from commit 2ae520cb12831d264ceb97c61f72c59d33c0dbd7) | |
Title | drm/amdgpu: don't access invalid sched | |
References |
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MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2025-01-11T12:35:34.351Z
Updated: 2025-01-11T12:35:34.351Z
Reserved: 2025-01-11T12:33:33.708Z
Link: CVE-2024-46896
Vulnrichment
No data.
NVD
Status : Received
Published: 2025-01-11T13:15:21.643
Modified: 2025-01-11T13:15:21.643
Link: CVE-2024-46896
Redhat