CVE-2026-46191fbcon: Avoid OOB font access if console rotation fails
- 7.1HighCVSS base score
- 0.14%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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
Timeline
ID reserved
By Linux
- 15 days later
· 15 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.14% · top 97% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected 6cc50e1c5b57180fd37a31282000f43859b0fe73 – < b51c343a81e6e806525a4435e22532c107dd7e9d
- affected 6cc50e1c5b57180fd37a31282000f43859b0fe73 – < 46cf3646dea54baeaa2eafe3fb1ba769947f31b0
- affected 6cc50e1c5b57180fd37a31282000f43859b0fe73 – < 524a6079395916fb3d790ef2bb46a1d2939b27dd
- affected 6cc50e1c5b57180fd37a31282000f43859b0fe73 – < 594973a2e54924d8ba31c9faac669fc1ba6fcb80
- affected 6cc50e1c5b57180fd37a31282000f43859b0fe73 – < ab6c34b9829d5de03f1d08a47a2253729a6e7e27
- affected 6cc50e1c5b57180fd37a31282000f43859b0fe73 – < 7105d9f1387d63b15c9a860674fc92c959181f2f
- affected 6cc50e1c5b57180fd37a31282000f43859b0fe73 – < b44cc78ff46b96e72d333a3be6aaaa0a14797263
- affected 6cc50e1c5b57180fd37a31282000f43859b0fe73 – < e4ef723d8975a2694cc90733a6b888a5e2841842
- affected 2.6.15
- unaffected < 2.6.15
- unaffected 5.10.259 – ≤ 5.10.*
- unaffected 5.15.210 – ≤ 5.15.*
- unaffected 6.1.176 – ≤ 6.1.*
- unaffected 6.6.140 – ≤ 6.6.*
- unaffected 6.12.90 – ≤ 6.12.*
- unaffected 6.18.32 – ≤ 6.18.*
- unaffected 7.0.7 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References9
- https://git.kernel.org/stable/c/b51c343a81e6e806525a4435e22532c107dd7e9d (opens in a new tab)
- https://git.kernel.org/stable/c/46cf3646dea54baeaa2eafe3fb1ba769947f31b0 (opens in a new tab)
- https://git.kernel.org/stable/c/524a6079395916fb3d790ef2bb46a1d2939b27dd (opens in a new tab)
- https://git.kernel.org/stable/c/594973a2e54924d8ba31c9faac669fc1ba6fcb80 (opens in a new tab)
- https://git.kernel.org/stable/c/ab6c34b9829d5de03f1d08a47a2253729a6e7e27 (opens in a new tab)
- https://git.kernel.org/stable/c/7105d9f1387d63b15c9a860674fc92c959181f2f (opens in a new tab)
- https://git.kernel.org/stable/c/b44cc78ff46b96e72d333a3be6aaaa0a14797263 (opens in a new tab)
- https://git.kernel.org/stable/c/e4ef723d8975a2694cc90733a6b888a5e2841842 (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32818 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46191)Record last updated .