01 Record

CVE-2026-31586

mm: blk-cgroup: fix use-after-free in cgwb_release_workfn()

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

mm: blk-cgroup: fix use-after-free in cgwb_release_workfn()

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.13% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 2.8% 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: 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

2026-04-24 14:42Z4 MO AGO

Last updated

2026-08-05 12:23Z1 MO AGO

Reserved

2026-03-09

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-416Use After FreeVariant
CWE-366Race Condition within a ThreadBase

Data version

5.2

Document digest

f684f53340edd18432b248df1a8db719074e35aa7ecdfac3cac503af3ef0bda8

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux59b57717fff8b562825d9d25e0180ad7e8048ca9 to < 23acef4156c260e8598397a1a2e8b3a23e919893, 59b57717fff8b562825d9d25e0180ad7e8048ca9 to < 1bd36e93b542d9dd020190c6607c6a3663405195, 59b57717fff8b562825d9d25e0180ad7e8048ca9 to < 740ba1ebb223f137ff088ab74d533a13f9167bd8, 59b57717fff8b562825d9d25e0180ad7e8048ca9 to < 115a5266749dcde7fe4127e8623d19c752088f69, 59b57717fff8b562825d9d25e0180ad7e8048ca9 to < dfc8292a1d6782c76b626315605e0585a5a18447, 59b57717fff8b562825d9d25e0180ad7e8048ca9 to < ea3af09eb87d8f8708c66747fcf1a2762902e839, 59b57717fff8b562825d9d25e0180ad7e8048ca9 to < 50879a3c1faf06e661090015d59e2127255cff27, 59b57717fff8b562825d9d25e0180ad7e8048ca9 to < 67cb119d32f35e32acd0393bbeb318b2bb1fdafe, 59b57717fff8b562825d9d25e0180ad7e8048ca9 to < 8f5857be99f1ed1fa80991c72449541f634626ee, 4.19—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/23acef4156c260e8598397a1a2e8b3a23e919893
git.kernel.orghttps://git.kernel.org/stable/c/1bd36e93b542d9dd020190c6607c6a3663405195
git.kernel.orghttps://git.kernel.org/stable/c/740ba1ebb223f137ff088ab74d533a13f9167bd8
git.kernel.orghttps://git.kernel.org/stable/c/115a5266749dcde7fe4127e8623d19c752088f69
git.kernel.orghttps://git.kernel.org/stable/c/dfc8292a1d6782c76b626315605e0585a5a18447
git.kernel.orghttps://git.kernel.org/stable/c/ea3af09eb87d8f8708c66747fcf1a2762902e839
git.kernel.orghttps://git.kernel.org/stable/c/50879a3c1faf06e661090015d59e2127255cff27
git.kernel.orghttps://git.kernel.org/stable/c/67cb119d32f35e32acd0393bbeb318b2bb1fdafe
git.kernel.orghttps://git.kernel.org/stable/c/8f5857be99f1ed1fa80991c72449541f634626ee

01 Record index

CVE-2026-31586

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-31586

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References