fkie_cve-2021-4460
Vulnerability from fkie_nvd
Published
2025-10-01 12:15
Modified
2025-10-02 19:12
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Fix UBSAN shift-out-of-bounds warning
If get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up
doing a shift operation where the number of bits shifted equals
number of bits in the operand. This behaviour is undefined.
Set num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the
count is >= number of bits in the operand.
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472
References
Impacted products
Vendor | Product | Version |
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{ "cveTags": [], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix UBSAN shift-out-of-bounds warning\n\nIf get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up\ndoing a shift operation where the number of bits shifted equals\nnumber of bits in the operand. This behaviour is undefined.\n\nSet num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the\ncount is \u003e= number of bits in the operand.\n\nBug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472" } ], "id": "CVE-2021-4460", "lastModified": "2025-10-02T19:12:17.160", "metrics": {}, "published": "2025-10-01T12:15:31.850", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0c0356ef2498c1a250fe3846f30293f828737309" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1874b0ef1426b873de94c61861e38f29a8df714c" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3fdc5182700910a685d23df57d65166e8556a266" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/50e2fc36e72d4ad672032ebf646cecb48656efe0" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9069b1b542de8f3bbffef868aff41521b21485cf" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis" }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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