01 Record

CVE-2021-47412

block: don't call rq_qos_ops->done_bio if the bio isn't tracked

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

block: don't call rq_qos_ops->done_bio if the bio isn't tracked

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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 14.1% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

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

2024-05-21 15:04Z2 YR AGO

Last updated

2026-08-05 08:47Z1 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-364Signal Handler Race ConditionBase

Data version

5.2

Document digest

346d86e62a1f1beed5ae5a8e5c2c162513ff42178d926b758944155f532a7d4f

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux67b42d0bf7a8fd1ec0cf1acdc9550e688d7c8578 to < db60edbfff332a6a5477c367af8125f034570989, 67b42d0bf7a8fd1ec0cf1acdc9550e688d7c8578 to < 004b8f8a691205a93d9e80d98b786b2b97424d6e, 67b42d0bf7a8fd1ec0cf1acdc9550e688d7c8578 to < a647a524a46736786c95cdb553a070322ca096e3, 4.19—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/db60edbfff332a6a5477c367af8125f034570989
git.kernel.orghttps://git.kernel.org/stable/c/004b8f8a691205a93d9e80d98b786b2b97424d6e
git.kernel.orghttps://git.kernel.org/stable/c/a647a524a46736786c95cdb553a070322ca096e3
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html

01 Record index

CVE-2021-47412

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47412

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References