CVE-2026-46191
What it is
In the Linux kernel, the following vulnerability has been resolved: fbcon: Avoid OOB font access if console rotation fails Clear the font buffer if the reallocation during console rotation fails in fbcon_rotate_font(). The putcs implementations for the rotated buffer will return early in this case. See [1] for an example. Currently, fbcon_rotate_font() keeps the old buffer, which is too small for the rotated font. Printing to the rotated console with a high-enough character code will overflow the font buffer. v2: - fix typos in commit message
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, 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: 7.1 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.1% · EPSS, next 30 days
- Weakness
- CWE-125 · Out-of-bounds read
- Record status
- Modified
Affected
- Linux Kernel < 6.6.140
- Linux Kernel < 6.12.90
- Linux Kernel < 6.18.32
- Linux Kernel < 7.0.7
Attack profile CVSS 3.1 · 7.1
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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-2026-46191.md and follow it. Check whether this project is affected by CVE-2026-46191. 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/594973a2e54924d8ba31c9faac669fc1ba6fcb80
- https://git.kernel.org/stable/c/7105d9f1387d63b15c9a860674fc92c959181f2f
- https://git.kernel.org/stable/c/ab6c34b9829d5de03f1d08a47a2253729a6e7e27
- https://git.kernel.org/stable/c/b44cc78ff46b96e72d333a3be6aaaa0a14797263
- https://git.kernel.org/stable/c/e4ef723d8975a2694cc90733a6b888a5e2841842
References
- https://git.kernel.org/stable/c/46cf3646dea54baeaa2eafe3fb1ba769947f31b0
- https://git.kernel.org/stable/c/524a6079395916fb3d790ef2bb46a1d2939b27dd
- https://git.kernel.org/stable/c/594973a2e54924d8ba31c9faac669fc1ba6fcb80
- https://git.kernel.org/stable/c/7105d9f1387d63b15c9a860674fc92c959181f2f
- https://git.kernel.org/stable/c/ab6c34b9829d5de03f1d08a47a2253729a6e7e27
- https://git.kernel.org/stable/c/b44cc78ff46b96e72d333a3be6aaaa0a14797263
- https://git.kernel.org/stable/c/b51c343a81e6e806525a4435e22532c107dd7e9d
- https://git.kernel.org/stable/c/e4ef723d8975a2694cc90733a6b888a5e2841842
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html