CVE-2021-4460

Advisory lineage Upstream: 0 Downstream: 8
Modified
Published: 01 Oct 2025, 11:45
Last modified:11 May 2026, 13:44

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7.1 HIGH
v3.1 (cve.org)
EPSS Score
0.03% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

01 Oct 2025, 11:45
Published
Vulnerability first disclosed
11 May 2026, 13:44
Last Modified
Vulnerability information updated

Description

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

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 8%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • linux•linux

    ≥ 4a488a7ad71401169cecee75dc94bcce642e2c53, < 0c0356ef2498c1a250fe3846f30293f828737309 | ≥ 4a488a7ad71401169cecee75dc94bcce642e2c53, < 1874b0ef1426b873de94c61861e38f29a8df714c | ≥ 4a488a7ad71401169cecee75dc94bcce642e2c53, < 3fdc5182700910a685d23df57d65166e8556a266 | ≥ 4a488a7ad71401169cecee75dc94bcce642e2c53, < 9069b1b542de8f3bbffef868aff41521b21485cf | ≥ 4a488a7ad71401169cecee75dc94bcce642e2c53, < 50e2fc36e72d4ad672032ebf646cecb48656efe0 | 3.19

  • linux•linux_kernel

    < 5.4.118 | ≥ 5.5, < 5.10.36 | ≥ 5.11, < 5.11.20 | ≥ 5.12, < 5.12.3

References (5)