CVE-2026-46191fbcon: Avoid OOB font access if console rotation fails
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- CVSS
- 7.1 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 6cc50e1c5b57180fd37a31282000f43859b0fe73 before b51c343a81e6e806525a4435e22532c107dd7e9d; from 6cc50e1c5b57180fd37a31282000f43859b0fe73 before 46cf3646dea54baeaa2eafe3fb1ba769947f31b0; from 6cc50e1c5b57180fd37a31282000f43859b0fe73 before 524a6079395916fb3d790ef2bb46a1d2939b27dd; from 6cc50e1c5b57180fd37a31282000f43859b0fe73 before 594973a2e54924d8ba31c9faac669fc1ba6fcb80; from 6cc50e1c5b57180fd37a31282000f43859b0fe73 before ab6c34b9829d5de03f1d08a47a2253729a6e7e27; from 6cc50e1c5b57180fd37a31282000f43859b0fe73 before 7105d9f1387d63b15c9a860674fc92c959181f2f; from 6cc50e1c5b57180fd37a31282000f43859b0fe73 before b44cc78ff46b96e72d333a3be6aaaa0a14797263; from 6cc50e1c5b57180fd37a31282000f43859b0fe73 before e4ef723d8975a2694cc90733a6b888a5e2841842 | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | all versions | CISA ADP |
linux linux_kernel linux:linux_kernel | from 2.6.15 before 6.6.140; from 6.7 before 6.12.90; from 6.13 before 6.18.32; from 6.19 before 7.0.7 | NVD |
References
- https://git.kernel.org/stable/c/b51c343a81e6e806525a4435e22532c107dd7e9d
- https://git.kernel.org/stable/c/46cf3646dea54baeaa2eafe3fb1ba769947f31b0
- https://git.kernel.org/stable/c/524a6079395916fb3d790ef2bb46a1d2939b27dd
- https://git.kernel.org/stable/c/594973a2e54924d8ba31c9faac669fc1ba6fcb80patch
- https://git.kernel.org/stable/c/ab6c34b9829d5de03f1d08a47a2253729a6e7e27patch
- https://git.kernel.org/stable/c/7105d9f1387d63b15c9a860674fc92c959181f2fpatch
- https://git.kernel.org/stable/c/b44cc78ff46b96e72d333a3be6aaaa0a14797263patch
- https://git.kernel.org/stable/c/e4ef723d8975a2694cc90733a6b888a5e2841842patch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.