🛡️ CVE-2026-46047 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

net: qrtr: ns: Fix use-after-free in driver remove()

In the Linux kernel, the following vulnerability has been resolved:

net: qrtr: ns: Fix use-after-free in driver remove()

In the remove callback, if a packet arrives after destroy_workqueue() is

called, but before sock_release(), the qrtr_ns_data_ready() callback will

try to queue the work, causing use-after-free issue.

Fix this issue by saving the default 'sk_data_ready' callback during

qrtr_ns_init() and use it to replace the qrtr_ns_data_ready() callback at

the start of remove(). This ensures that even if a packet arrives after

destroy_workqueue(), the work struct will not be dereferenced.

Note that it is also required to ensure that the RX threads are completed

before destroying the workqueue, because the threads could be using the

qrtr_ns_data_ready() callback.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2026-46047 is recorded against 3 packages.

  • kernel (from 6.19.0 up to 7.0.4)
  • linux-kernel (from 6.19 up to 7.0.4)
  • unknown

Timeline and source

Published on 27 May 2026 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2026-46047 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2026-05-27
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 6.19.0 7.0.4
linux-kernel 6.19 7.0.4
unknown — —

References

Similar Threats

Site Security Check

Is kernel part of your stack?

CVE-2026-46047 is rated CVSS 7.8 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesCVECVE 2026