01 Record

CVE-2026-23458

netfilter: ctnetlink: fix use-after-free in ctnetlink_dump_exp_ct()

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

netfilter: ctnetlink: fix use-after-free in ctnetlink_dump_exp_ct()

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 3.1% 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 2026-07-24.
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

2026-04-03 15:15Z5 MO AGO

Last updated

2026-08-05 12:21Z1 MO 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-911Improper Update of Reference CountBase

Data version

5.2

Document digest

5029b0c220af01c7cd07e31708e9ec1cc0cd40094ab24941f04f2aaf7f63ff77

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxe844a928431fa8f1359d1f4f2cef53d9b446bf52 to < d8cd0efbccc5cfb0a80da744a7da76e1333ab925, e844a928431fa8f1359d1f4f2cef53d9b446bf52 to < 9821b47f669eb82791fa0b1a6ebaf9aa219bea72, e844a928431fa8f1359d1f4f2cef53d9b446bf52 to < bdf2724eefd4455a66863abb025bab8d3aa98c57, e844a928431fa8f1359d1f4f2cef53d9b446bf52 to < f04cc86d59906513d2d62183b882966fc0ae0390, e844a928431fa8f1359d1f4f2cef53d9b446bf52 to < f025171feef2ac65663d7986f1d5ff0c28d6b2a9, e844a928431fa8f1359d1f4f2cef53d9b446bf52 to < 04c8907ce4e3d3e26c5e1a3e47aa5d17082cbb56, e844a928431fa8f1359d1f4f2cef53d9b446bf52 to < cd541f15b60e2257441398cf495d978f816d09f8, e844a928431fa8f1359d1f4f2cef53d9b446bf52 to < 5cb81eeda909dbb2def209dd10636b51549a3f8a, 3.10—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/d8cd0efbccc5cfb0a80da744a7da76e1333ab925
git.kernel.orghttps://git.kernel.org/stable/c/9821b47f669eb82791fa0b1a6ebaf9aa219bea72
git.kernel.orghttps://git.kernel.org/stable/c/bdf2724eefd4455a66863abb025bab8d3aa98c57
git.kernel.orghttps://git.kernel.org/stable/c/f04cc86d59906513d2d62183b882966fc0ae0390
git.kernel.orghttps://git.kernel.org/stable/c/f025171feef2ac65663d7986f1d5ff0c28d6b2a9
git.kernel.orghttps://git.kernel.org/stable/c/04c8907ce4e3d3e26c5e1a3e47aa5d17082cbb56
git.kernel.orghttps://git.kernel.org/stable/c/cd541f15b60e2257441398cf495d978f816d09f8
git.kernel.orghttps://git.kernel.org/stable/c/5cb81eeda909dbb2def209dd10636b51549a3f8a
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html

01 Record index

CVE-2026-23458

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-23458

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References