01 Record

CVE-2021-4460

drm/amdkfd: Fix UBSAN shift-out-of-bounds warning

HighPUBLISHEDCNA: Linux

CNA base score7.1 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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02 Description

drm/amdkfd: Fix UBSAN shift-out-of-bounds warning

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 5.4% of scored records. A rank, not a probability.

NVD base score

7.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-08-11.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-10-01 11:45Z11 MO AGO

Last updated

2026-08-11 02:05Z25 DAYS AGO

Reserved

2025-10-01

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

CWE-125Out-of-bounds ReadBase
CWE-1335Incorrect Bitwise Shift of IntegerBase

Data version

5.2

Document digest

4b4bfde11170f8ab381e61806d2f1c75e52f06653bab3952f00f83962016397b

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux35cdc81bfa94d10373ecae279f3c48ca858ac4fd to < 0c0356ef2498c1a250fe3846f30293f828737309, 35cdc81bfa94d10373ecae279f3c48ca858ac4fd to < 1874b0ef1426b873de94c61861e38f29a8df714c, 35cdc81bfa94d10373ecae279f3c48ca858ac4fd to < 3fdc5182700910a685d23df57d65166e8556a266, 35cdc81bfa94d10373ecae279f3c48ca858ac4fd to < 9069b1b542de8f3bbffef868aff41521b21485cf, 35cdc81bfa94d10373ecae279f3c48ca858ac4fd to < 50e2fc36e72d4ad672032ebf646cecb48656efe0, 5.4—

06 References

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

01 Record index

CVE-2021-4460

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-4460

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References