CVE-2026-23111

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 ImpacttotalSuccessful exploitation gives total 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

0.48% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 39.3% 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 2026-09-03.

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

2026-02-13 13:29Z6 MO AGO

Last updated

2026-09-03 12:04Z1 DAY AGO

Reserved

2026-01-13

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-672Operation on a Resource after Expiration or ReleaseClass

Data version

5.2

Document digest

8aec41d1c185cc51d2069dddd07979dc5e93f8b6f8d8ea5b5a3b2ee48ecf78aa

• git.kernel.orghttps://git.kernel.org/stable/c/8c760ba4e36c750379d13569f23f5a6e185333f5
• git.kernel.orghttps://git.kernel.org/stable/c/b9b6573421de51829f7ec1cce76d85f5f6fbbd7f
• git.kernel.orghttps://git.kernel.org/stable/c/42c574c1504aa089a0a142e4c13859327570473d
• git.kernel.orghttps://git.kernel.org/stable/c/1444ff890b4653add12f734ffeffc173d42862dd
• git.kernel.orghttps://git.kernel.org/stable/c/8b68a45f9722f2babe9e7bad00aa74638addf081
• git.kernel.orghttps://git.kernel.org/stable/c/f41c5d151078c5348271ffaf8e7410d96f2d82f8
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-253495.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html
• blog.exodusintel.comhttps://blog.exodusintel.com/2026/06/08/off-by-exploiting-a-use-after-free-in-the-linux-kernel/technical-description
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-23111vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2439687https://bugzilla.redhat.com/show_bug.cgi?id=2439687issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23111.jsonx_sadp-csaf-vex
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:10996vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:18134vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:10108vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:9112vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:6570vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:62639vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:62641vendor-advisoryx_refsource_REDHAT