High 7.8Published May 27, 2026

CVE-2026-46047net: qrtr: ns: Fix use-after-free in driver remove()

Updated under an hour ago (Oct 26, 2026, 2:23 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 65168712c216584ff482a7d1a67589f2079b2634; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before dff081c3602f2fd810f69ef47945a226980dd05d; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 4ae0bd51bf7079e9c2a06b5de0ae04ba70d10167; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 0f313eb6a8f6dffa491373cf3afab979fa1c02f4; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before db3c60ec772de30acae92d560dfcc5258e58dbe8; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 2e127ceb1c415e246076d8e09e23e443a7a2038f; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before f96779e916576e81430ebb326baff6e433fef8ae; from 0c2204a4ad710d95d348ea006f14ba926e842ffd before 7809fea20c9404bfcfa6112ec08d1fe1d3520beb	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.7 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4	NVD

References

References

https://git.kernel.org/stable/c/65168712c216584ff482a7d1a67589f2079b2634	patch
https://git.kernel.org/stable/c/dff081c3602f2fd810f69ef47945a226980dd05d	patch
https://git.kernel.org/stable/c/4ae0bd51bf7079e9c2a06b5de0ae04ba70d10167	patch
https://git.kernel.org/stable/c/0f313eb6a8f6dffa491373cf3afab979fa1c02f4	patch
https://git.kernel.org/stable/c/db3c60ec772de30acae92d560dfcc5258e58dbe8	patch
https://git.kernel.org/stable/c/2e127ceb1c415e246076d8e09e23e443a7a2038f	patch
https://git.kernel.org/stable/c/f96779e916576e81430ebb326baff6e433fef8ae	patch
https://git.kernel.org/stable/c/7809fea20c9404bfcfa6112ec08d1fe1d3520beb	patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.