Is CVE-2021-4460 in the CISA KEV catalog?

No. CVE-2021-4460 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-4460?

CVE-2021-4460 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2021-4460?

CVE-2021-4460 has an EPSS score of 0.15% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-4460?

Upgrade linux on debian 11 to 5.10.38-1 or later. Fixes are available for 51 affected products.

CVE & CISA-KEV Catalog

CVE-2021-4460

HIGH

7.1

CVSS v3

NVD

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

CWE-125Out-of-bounds Read

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.38-1CVE-2021-4460

bpftoolRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

bpftoolRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

bpftool-debuginfoRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

bpftool-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernelRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernelRed Hat / RHEL

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-abi-stablelistsRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-abi-stablelistsRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-abi-whitelistsRed Hat / RHEL

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-abi-whitelistsRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-coreRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-coreRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-debugRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-debugRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-debug-coreRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-debug-coreRed Hat / RHEL

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-debug-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-debug-debuginfoRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-debug-develRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-debug-develRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-debug-modulesRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-debug-modulesRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-debug-modules-extraRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-debug-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-debuginfoRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-debuginfo-common-x86_64Rocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-debuginfo-common-x86_64Red Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-develRed Hat / RHEL

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-develRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-docRed Hat / RHEL

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-docRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-modulesRed Hat / RHEL

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-modulesRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-modules-extraRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-toolsRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-toolsRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-tools-debuginfoRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-tools-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

kernel-tools-libsRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

kernel-tools-libsRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

perfRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

perfRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

perf-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

perf-debuginfoRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

python3-perfRocky

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

python3-perfRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

python3-perf-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

python3-perf-debuginfoRocky

Fixed in:0:4.18.0-305.188.1.el8_4RHSA-2026:7003

Fixed in:0:4.18.0-193.193.1.el8_2RHSA-2026:6953

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Exploit Intelligence

0.15%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Patch5

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-14.