CVE-2026-31607

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

0.31% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 23.7% 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

Modified. NVD last modified this record on 2026-08-21.

Red Hat severity

Important. 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 14:42Z4 MO AGO

Last updated

2026-08-21 12:13Z14 DAYS 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

No CWE assigned

Data version

5.2

Document digest

ed244d700cb5ddb72c5517c8f5b7b6915baf986e4d5cce5a1e3457866f4b4a5a

• git.kernel.orghttps://git.kernel.org/stable/c/324262c38438255bf6bdbf6342ca47c0badaab76
• git.kernel.orghttps://git.kernel.org/stable/c/973f2c250289f5bf6cc146b98aa6fdde11fe50d6
• git.kernel.orghttps://git.kernel.org/stable/c/ce744264b06b97069b3722511ab355738311fee0
• git.kernel.orghttps://git.kernel.org/stable/c/885c8591784da6314f9aa82fa460ac69f9f79e5f
• git.kernel.orghttps://git.kernel.org/stable/c/8d155e2d1c4102f74f82a2bf9c016164bb0f7384
• git.kernel.orghttps://git.kernel.org/stable/c/906f16a836de13fe61f49cdce2f66f2dbd14caf4
• git.kernel.orghttps://git.kernel.org/stable/c/ef8ebb1c637b4cfb61a9dd2e013376774ee2033b
• git.kernel.orghttps://git.kernel.org/stable/c/5e1c4ece08ccdc197177631f111845a2c68eede3
• git.kernel.orghttps://git.kernel.org/stable/c/2ab833a16a825373aad2ba7d54b572b277e95b71
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-31607vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2461521https://bugzilla.redhat.com/show_bug.cgi?id=2461521issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31607.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:25095vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:41236vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:24343vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19569vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:23224vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:19568vendor-advisoryx_refsource_REDHAT