CVE-2026-68290Public exploit

Kernel memory corruption via RDS teardown race

Published Aug 10, 2026 · Updated Aug 10, 2026

Use-after-free in the Linux kernel RDS TCP implementation allows local users to corrupt kernel memory by racing a sysctl write with netns teardown. rds_tcp_exit_net() frees the per-namespace listen socket before unregistering its sysctl table, so rds_tcp_skbuf_handler() dereferences the released socket during a concurrent write. A low-privileged local account can control both sides through an unprivileged network namespace, producing kernel-memory disclosure or corruption and a repeatable kernel panic.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel RDS TCP implementation allows local users to corrupt kernel memory by racing a sysctl write with netns teardown. rds_tcp_exit_net() frees the per-namespace listen socket before unregistering its sysctl table, so rds_tcp_skbuf_handler() dereferences the released socket during a concurrent write. A low-privileged local account can control both sides through an unprivileged network namespace, producing kernel-memory disclosure or corruption and a repeatable kernel panic.

The record

CVE
CVE-2026-68290
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-825, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=6.12.10 <6.12.101
  2. Affected versionversion=6.13
  3. Affected versionversion=7f5611cbc4871c7fb1ad36c2e5a9edad63dca95c <167e54c703ccd4fa028feb568b0d1002020cff86
  4. Affected versionversion=7f5611cbc4871c7fb1ad36c2e5a9edad63dca95c <16df2d154ec82e2f7e7585b4fa154751ba37729a
  5. Affected versionversion=7f5611cbc4871c7fb1ad36c2e5a9edad63dca95c <3aa13fe0c1bb7bc5312f878e61523e5d8cf3f85d
  6. Affected versionversion=de8d6de0ee27be4b2b1e5b06f04aeacbabbba492 <80fffed08dc1c10e971066941d2daa56253f1552

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12.10 <6.12.101; version=6.13; version=7f5611cbc4871c7fb1ad36c2e5a9edad63dca95c <167e54c703ccd4fa028feb568b0d1002020cff86; version=7f5611cbc4871c7fb1ad36c2e5a9edad63dca95c <16df2d154ec82e2f7e7585b4fa154751ba37729a; version=7f5611cbc4871c7fb1ad36c2e5a9edad63dca95c <3aa13fe0c1bb7bc5312f878e61523e5d8cf3f85d; version=de8d6de0ee27be4b2b1e5b06f04aeacbabbba492 <80fffed08dc1c10e971066941d2daa56253f1552

Published CVSS scores

7.8Linux Kernel CVE TeamCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-825Expired Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

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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