CVE-2026-46047net: qrtr: ns: Fix use-after-free in driver remove()
- 7.8HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 98% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 0c2204a4ad710d95d348ea006f14ba926e842ffd – < 65168712c216584ff482a7d1a67589f2079b2634
- affected 0c2204a4ad710d95d348ea006f14ba926e842ffd – < dff081c3602f2fd810f69ef47945a226980dd05d
- affected 0c2204a4ad710d95d348ea006f14ba926e842ffd – < 4ae0bd51bf7079e9c2a06b5de0ae04ba70d10167
- affected 0c2204a4ad710d95d348ea006f14ba926e842ffd – < 0f313eb6a8f6dffa491373cf3afab979fa1c02f4
- affected 0c2204a4ad710d95d348ea006f14ba926e842ffd – < db3c60ec772de30acae92d560dfcc5258e58dbe8
- affected 0c2204a4ad710d95d348ea006f14ba926e842ffd – < 2e127ceb1c415e246076d8e09e23e443a7a2038f
- affected 0c2204a4ad710d95d348ea006f14ba926e842ffd – < f96779e916576e81430ebb326baff6e433fef8ae
- affected 0c2204a4ad710d95d348ea006f14ba926e842ffd – < 7809fea20c9404bfcfa6112ec08d1fe1d3520beb
- affected 5.7
- unaffected < 5.7
- unaffected 5.10.258 – ≤ 5.10.*
- unaffected 5.15.209 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.86 – ≤ 6.12.*
- unaffected 6.18.27 – ≤ 6.18.*
- unaffected 7.0.4 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References9
- https://git.kernel.org/stable/c/65168712c216584ff482a7d1a67589f2079b2634 (opens in a new tab)
- https://git.kernel.org/stable/c/dff081c3602f2fd810f69ef47945a226980dd05d (opens in a new tab)
- https://git.kernel.org/stable/c/4ae0bd51bf7079e9c2a06b5de0ae04ba70d10167 (opens in a new tab)
- https://git.kernel.org/stable/c/0f313eb6a8f6dffa491373cf3afab979fa1c02f4 (opens in a new tab)
- https://git.kernel.org/stable/c/db3c60ec772de30acae92d560dfcc5258e58dbe8 (opens in a new tab)
- https://git.kernel.org/stable/c/2e127ceb1c415e246076d8e09e23e443a7a2038f (opens in a new tab)
- https://git.kernel.org/stable/c/f96779e916576e81430ebb326baff6e433fef8ae (opens in a new tab)
- https://git.kernel.org/stable/c/7809fea20c9404bfcfa6112ec08d1fe1d3520beb (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32429 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46047)Record last updated .