CVE-2026-46267
What it is
In the Linux kernel, the following vulnerability has been resolved: nfc: hci: shdlc: Stop timers and work before freeing context llc_shdlc_deinit() purges SHDLC skb queues and frees the llc_shdlc structure while its timers and state machine work may still be active. Timer callbacks can schedule sm_work, and sm_work accesses SHDLC state and the skb queues. If teardown happens in parallel with a queued/running work item, it can lead to UAF and other shutdown races. Stop all SHDLC timers and cancel sm_work synchronously before purging the queues and freeing the context. Found by Linux Verification Center (linuxtesting.org) with SVACE.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.1% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-416 · Use after free
- Record status
- Analyzed
Affected
- Linux Kernel < 5.15.202
- Linux Kernel < 6.1.165
- Linux Kernel < 6.6.128
- Linux Kernel < 6.12.75
- Linux Kernel < 6.18.14
- Linux Kernel < 6.19.4
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-46267.md and follow it. Check whether this project is affected by CVE-2026-46267. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/1cb97b1225450af3f7b728777929ba50c6a58ced
- https://git.kernel.org/stable/c/276820278e9717cc7d4bb32381892dd3ddf418d4
- https://git.kernel.org/stable/c/77eef9f2eef045c3c37a3df82d3e661afb866b98
- https://git.kernel.org/stable/c/a24a676329d40481b2331bfa1418a679577dfd3a
- https://git.kernel.org/stable/c/c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e
- https://git.kernel.org/stable/c/c9efde1e537baed7648a94022b43836a348a074f
- https://git.kernel.org/stable/c/cf70cedce327833296ebe6043364d1e44b76a2ab
References
- https://git.kernel.org/stable/c/1cb97b1225450af3f7b728777929ba50c6a58ced
- https://git.kernel.org/stable/c/276820278e9717cc7d4bb32381892dd3ddf418d4
- https://git.kernel.org/stable/c/77eef9f2eef045c3c37a3df82d3e661afb866b98
- https://git.kernel.org/stable/c/a24a676329d40481b2331bfa1418a679577dfd3a
- https://git.kernel.org/stable/c/c60f41022eaad2a1dafecd3ae6f249a3bd6d4b6e
- https://git.kernel.org/stable/c/c9efde1e537baed7648a94022b43836a348a074f
- https://git.kernel.org/stable/c/cf70cedce327833296ebe6043364d1e44b76a2ab