{"id":"CVE-2026-46191","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: Avoid OOB font access if console rotation fails\n\nClear the font buffer if the reallocation during console rotation fails\nin fbcon_rotate_font()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: Avoid OOB font access if console rotation fails\n\nClear the font buffer if the reallocation during console rotation fails\nin fbcon_rotate_font(). The putcs implem…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","cwe":["CWE-125"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 2.6.15, < 6.6.140","linux_kernel >= 6.7, < 6.12.90","linux_kernel >= 6.13, < 6.18.32","linux_kernel >= 6.19, < 7.0.7"],"patched":["linux_kernel 7.0.7"],"published":"2026-05-28","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:19:49.467","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-46191","references":[{"url":"https://git.kernel.org/stable/c/46cf3646dea54baeaa2eafe3fb1ba769947f31b0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/524a6079395916fb3d790ef2bb46a1d2939b27dd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/594973a2e54924d8ba31c9faac669fc1ba6fcb80","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7105d9f1387d63b15c9a860674fc92c959181f2f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ab6c34b9829d5de03f1d08a47a2253729a6e7e27","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b44cc78ff46b96e72d333a3be6aaaa0a14797263","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b51c343a81e6e806525a4435e22532c107dd7e9d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e4ef723d8975a2694cc90733a6b888a5e2841842","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00131,"epssPercentile":0.02404,"ingestedAt":"2026-10-15T03:30:12.895Z","slug":"CVE-2026-46191","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nfbcon: Avoid OOB font access if console rotation fails\n\nClear the font buffer if the reallocation during console rotation fails\nin fbcon_rotate_font(). The putcs implementations for the rotated buffer\nwill return early in this case. See [1] for an example.\n\nCurrently, fbcon_rotate_font() keeps the old buffer, which is too small\nfor the rotated font. Printing to the rotated console with a high-enough\ncharacter code will overflow the font buffer.\n\nv2:\n- fix typos in commit message\n\n## Affected\n\n- `linux_kernel >= 2.6.15, < 6.6.140`\n- `linux_kernel >= 6.7, < 6.12.90`\n- `linux_kernel >= 6.13, < 6.18.32`\n- `linux_kernel >= 6.19, < 7.0.7`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.7`","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}