CVE-2026-23010Hinoki check available

Local system compromise via IPv6 use-after-free

Published Jan 25, 2026 · Updated Jan 25, 2026

Use-after-free in affected Linux Kernel versions allows local users to compromise system confidentiality, integrity, and availability. During IPv6 address deletion, inet6_addr_del() calls ipv6_del_addr() for a managed temporary address before reading ifp->flags, so the later flag access dereferences a freed inet6_ifaddr object. Exploitation requires low-privileged local access to invoke IPv6 address deletion through an ioctl or rtnetlink; successful exploitation can compromise the host kernel.

CVSS severity7.8
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use-after-free in affected Linux Kernel versions allows local users to compromise system confidentiality, integrity, and availability. During IPv6 address deletion, inet6_addr_del() calls ipv6_del_addr() for a managed temporary address before reading ifp->flags, so the later flag access dereferences a freed inet6_ifaddr object. Exploitation requires low-privileged local access to invoke IPv6 address deletion through an ioctl or rtnetlink; successful exploitation can compromise the host kernel.

The record

CVE
CVE-2026-23010
Published
Jan 25, 2026
Updated
Jan 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=00b5b7aab9e422d00d5a9d03d7e0760a76b5d57f <8b6dcb565e419846bd521e31d5e1f98e4d0e1179
  2. Affected versionversion=00b5b7aab9e422d00d5a9d03d7e0760a76b5d57f <ddf96c393a33aef4887e2e406c76c2f8cda1419c
  3. Affected versionversion=6.13
  4. Affected versionversion=836deb96383ed9c1a411f172954d74b3f74ec6ac
  5. Affected versionversion=851b3bb105c595cc20b8dcc1b4de029061ce2b76
  6. Affected versionversion=ca97dd10424860a3806ad3a9e26b9dce2901ee0c
  7. Affected versionversion=cb74207ef98317f8874a0b9780bb339c2eb700b0 <2684610a9c9c53f262fd864fa5c407e79f304804

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=00b5b7aab9e422d00d5a9d03d7e0760a76b5d57f <8b6dcb565e419846bd521e31d5e1f98e4d0e1179; version=00b5b7aab9e422d00d5a9d03d7e0760a76b5d57f <ddf96c393a33aef4887e2e406c76c2f8cda1419c; version=6.13; version=836deb96383ed9c1a411f172954d74b3f74ec6ac; version=851b3bb105c595cc20b8dcc1b4de029061ce2b76; version=ca97dd10424860a3806ad3a9e26b9dce2901ee0c; version=cb74207ef98317f8874a0b9780bb339c2eb700b0 <2684610a9c9c53f262fd864fa5c407e79f304804

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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