CVE-2026-23299

Medium

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: purge error queues in socket destructors When TX timestamping is enabled via SO_TIMESTAMPING, SKBs may be queued into sk_error_queue and will stay there until consumed. If userspace never gets to read the timestamps, or if the controller is removed unexpectedly, these SKBs will leak. Fix by adding skb_queue_purge() calls for sk_error_queue in affected bluetooth destructors. RFCOMM does not currently use sk_error_queue.

Package Linux Kernel
Published 2026-03-25
Last modified 2026-05-29
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-772

CVE-2026-23299 is a Missing Release of Resource after Effective Lifetime vulnerability

What is Missing Release of Resource after Effective Lifetime?

The product does not release a resource after its effective lifetime has ended. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.15 and later are affected. Fixed in 6.18.17, 6.19.7, 7.0 and their respective stable series.

Affected from
≥ 6.15
Fixed in
✓ 6.18.17 6.18.x ✓ 6.19.7 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-23299 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2026-23299?

    CVE-2026-23299 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Missing Release of Resource after Effective Lifetime flaw (CWE-772) . It affects Linux kernel versions from 6.15 onward and has been patched in 6.18.17, 6.19.7 and 7.0. CVE-2026-23299 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2026-23299?

    CVE-2026-23299 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2026-23299?

    Yes — CVE-2026-23299 has been patched. Fixed versions include 6.18.17, 6.19.7 and 7.0. If you are running Linux kernel 6.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-23299 actively exploited?

    No — CVE-2026-23299 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Missing Release of Resource after Effective Lifetime (CWE-772)?

    The product does not release a resource after its effective lifetime has ended. View CWE-772 on MITRE CWE →

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