01 Record

CVE-2021-46938

dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails

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

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 16.2% of scored records. A rank, not a probability.

NVD base score

7.8 (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:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. 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

2024-02-27 18:40Z2 YR AGO

Last updated

2026-05-11 13:44Z3 MO AGO

Reserved

2024-02-25

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-415Double FreeVariant

Data version

5.2

Document digest

5122bef36c76828aee600d174f6b0dac02f07cca30d4bb4cea8e49e06d45b058

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1c357a1e86a4227a6b6059f2de118ae47659cebc to < 8ae0185255eaf05bd66f4215c81e99bf01140fd9, 1c357a1e86a4227a6b6059f2de118ae47659cebc to < b42c0a33dfdd451d9be62dd5de58c39f2750b6e3, 1c357a1e86a4227a6b6059f2de118ae47659cebc to < 772b9f59657665af3b68d24d12b9d172d31f0dfb, 1c357a1e86a4227a6b6059f2de118ae47659cebc to < a992a283c0b77d0a7c2c348add0e6a21fb1dab67, 1c357a1e86a4227a6b6059f2de118ae47659cebc to < 1cb02dc76f4c0a2749a02b26469512d6984252e9, 1c357a1e86a4227a6b6059f2de118ae47659cebc to < 6086f957416a6e87236c06079fcaba7a3998aeca, 1c357a1e86a4227a6b6059f2de118ae47659cebc to < d757bf4c69cda3c3ab7f775dfabbf5a80e2f6f9d, 1c357a1e86a4227a6b6059f2de118ae47659cebc to < 8e947c8f4a5620df77e43c9c75310dc510250166, 4.6—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/8ae0185255eaf05bd66f4215c81e99bf01140fd9
git.kernel.orghttps://git.kernel.org/stable/c/b42c0a33dfdd451d9be62dd5de58c39f2750b6e3
git.kernel.orghttps://git.kernel.org/stable/c/772b9f59657665af3b68d24d12b9d172d31f0dfb
git.kernel.orghttps://git.kernel.org/stable/c/a992a283c0b77d0a7c2c348add0e6a21fb1dab67
git.kernel.orghttps://git.kernel.org/stable/c/1cb02dc76f4c0a2749a02b26469512d6984252e9
git.kernel.orghttps://git.kernel.org/stable/c/6086f957416a6e87236c06079fcaba7a3998aeca
git.kernel.orghttps://git.kernel.org/stable/c/d757bf4c69cda3c3ab7f775dfabbf5a80e2f6f9d
git.kernel.orghttps://git.kernel.org/stable/c/8e947c8f4a5620df77e43c9c75310dc510250166

01 Record index

CVE-2021-46938

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-46938

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References