CVEvulnerability
CVE-2026-46191
7.1 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-05-28
- Last modified
- 2026-10-15
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Weaknesses
- CWE-125
Description
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
Affected configurations
• linux linux kernel (>= 2.6.15 < 6.6.140)
• linux linux kernel (>= 6.7 < 6.12.90)
• linux linux kernel (>= 6.13 < 6.18.32)
• linux linux kernel (>= 6.19 < 7.0.7)
Related
Weakness · CWE (1)
- CWE-125 Out-of-bounds Read weakness
References
- https://git.kernel.org/stable/c/46cf3646dea54baeaa2eafe3fb1ba769947f31b0 git.kernel.org
- https://git.kernel.org/stable/c/524a6079395916fb3d790ef2bb46a1d2939b27dd git.kernel.org
- https://git.kernel.org/stable/c/594973a2e54924d8ba31c9faac669fc1ba6fcb80 Patch
- https://git.kernel.org/stable/c/7105d9f1387d63b15c9a860674fc92c959181f2f Patch
- https://git.kernel.org/stable/c/ab6c34b9829d5de03f1d08a47a2253729a6e7e27 Patch
- https://git.kernel.org/stable/c/b44cc78ff46b96e72d333a3be6aaaa0a14797263 Patch
- https://git.kernel.org/stable/c/b51c343a81e6e806525a4435e22532c107dd7e9d git.kernel.org
- https://git.kernel.org/stable/c/e4ef723d8975a2694cc90733a6b888a5e2841842 Patch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html cert-portal.siemens.com