CVE-2026-31668

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

0.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 36.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. 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.

Published

2026-04-24 14:45Z4 MO AGO

Last updated

2026-08-05 12:24Z1 MO AGO

Reserved

2026-03-09

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-821Incorrect SynchronizationBase

Data version

5.2

Document digest

275117acf1caddc72f28165571cf5c0d052f2664c4105c8fde1c73aeaad2988e

• git.kernel.orghttps://git.kernel.org/stable/c/1dec91d3b1cefb82635761b7812154af3ef46449
• git.kernel.orghttps://git.kernel.org/stable/c/750569d6987a0ff46317a4b86eb3907e296287bf
• git.kernel.orghttps://git.kernel.org/stable/c/57d0374d14fa667dec6952173b93e7e84486d5c9
• git.kernel.orghttps://git.kernel.org/stable/c/84d458018b147176b259347103fccb7e93abd2b1
• git.kernel.orghttps://git.kernel.org/stable/c/6305ad032b03d2ea4181b953a66e19a9a6ed053c
• git.kernel.orghttps://git.kernel.org/stable/c/fb56de5d99218de49d5d43ef3a99e062ecd0f9a1
• git.kernel.orghttps://git.kernel.org/stable/c/17d87d42874f5d6c1a0ccc6d9190dfe82a9a7a6a
• git.kernel.orghttps://git.kernel.org/stable/c/c3812651b522fe8437ebb7063b75ddb95b571643