CVE-2021-4460

HIGH EPSS 4.6%
Published Oct 1, 20259mo ago · Modified Jun 17, 20262w ago
7.1 CVSS 3.1
High
Find Similar
Published Oct 1, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
4.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel* <5.4.118
linuxlinux_kernel*≥5.5  –  <5.10.36
linuxlinux_kernel*≥5.11  –  <5.11.20
linuxlinux_kernel*≥5.12  –  <5.12.3

References 5

  • git.kernel.org https://git.kernel.org/stable/c/0c0356ef2498c1a250fe3846f30293f828737309
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1874b0ef1426b873de94c61861e38f29a8df714c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3fdc5182700910a685d23df57d65166e8556a266
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/50e2fc36e72d4ad672032ebf646cecb48656efe0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9069b1b542de8f3bbffef868aff41521b21485cf
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0c0356ef2498c1a250fe3846f30293f828737309
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/1874b0ef1426b873de94c61861e38f29a8df714c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3fdc5182700910a685d23df57d65166e8556a266
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/50e2fc36e72d4ad672032ebf646cecb48656efe0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9069b1b542de8f3bbffef868aff41521b21485cf
    Patch