CVE-2026-43123
What it is
In the Linux kernel, the following vulnerability has been resolved: fbcon: check return value of con2fb_acquire_newinfo() If fbcon_open() fails when called from con2fb_acquire_newinfo() then info->fbcon_par pointer remains NULL which is later dereferenced. Add check for return value of the function con2fb_acquire_newinfo() to avoid it. 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 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: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-476 · NULL pointer dereference
- Record status
- Analyzed
Affected
- Linux Kernel < 5.15.203
- Linux Kernel < 6.1.165
- Linux Kernel < 6.6.128
- Linux Kernel < 6.12.75
- Linux Kernel < 6.18.16
- Linux Kernel < 6.19.6
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-2026-43123.md and follow it. Check whether this project is affected by CVE-2026-43123. 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/011a0502801c8536f64141a2b61362c14f456544
- https://git.kernel.org/stable/c/0b038c0be6827dd2dbb1ce4f8d92d97c80cbe9cc
- https://git.kernel.org/stable/c/11a93180a70bb3095a9bd80d113d9277e30d9959
- https://git.kernel.org/stable/c/3b5a754ec86bc6064af9aca76eb191c2405e6b0c
- https://git.kernel.org/stable/c/a785c4e2a999c2d51dfcf40d317cfb30cc735d2c
- https://git.kernel.org/stable/c/d3e535533767c85788529e626478718b7e95a59f
- https://git.kernel.org/stable/c/f57b61624c86ef8f87f6e6b7dd0755de03d90e89
References
- https://git.kernel.org/stable/c/011a0502801c8536f64141a2b61362c14f456544
- https://git.kernel.org/stable/c/0b038c0be6827dd2dbb1ce4f8d92d97c80cbe9cc
- https://git.kernel.org/stable/c/11a93180a70bb3095a9bd80d113d9277e30d9959
- https://git.kernel.org/stable/c/3b5a754ec86bc6064af9aca76eb191c2405e6b0c
- https://git.kernel.org/stable/c/a785c4e2a999c2d51dfcf40d317cfb30cc735d2c
- https://git.kernel.org/stable/c/d3e535533767c85788529e626478718b7e95a59f
- https://git.kernel.org/stable/c/f57b61624c86ef8f87f6e6b7dd0755de03d90e89