CVE-2026-53402

A flaw was found in the Linux kernel's framebuffer console fbcon component. When the fbcondosetfont function fails, the system's error handling does not correctly restore the font state, leading to a desynchronized terminal. A local user can exploit this by providing character indices that cause ...

SUSE CVE-2026-53402

In the Linux kernel, the following vulnerability has been resolved: fbdev: fbcon: fix out-of-bounds read in errout of fbcondosetfont When fbcondosetfont fails e.g., due to a memory allocation failure inside vcresize under heavy memory pressure, it jumps to the errout label to roll back the consol...

CVE-2026-63826

In the Linux kernel, the following vulnerability has been resolved: fbdev: fix use-after-free in storemodes storemodes replaces a framebuffer's modelist with modes from userspace. On success it frees the old modelist with fbdestroymodelist. Two fields still point into that freed list. One pointer...

CVE-2026-53402

In the Linux kernel, the following vulnerability has been resolved: fbdev: fbcon: fix out-of-bounds read in errout of fbcondosetfont When fbcondosetfont fails e.g., due to a memory allocation failure inside vcresize under heavy memory pressure, it jumps to the errout label to roll back the consol...

EUVD-2026-45492

In the Linux kernel, the following vulnerability has been resolved: fbdev: fix use-after-free in storemodes storemodes replaces a framebuffer's modelist with modes from userspace. On success it frees the old modelist with fbdestroymodelist. Two fields still point into that freed list. One pointer...

CVE-2026-53402

In the Linux kernel, the following vulnerability has been resolved: fbdev: fbcon: fix out-of-bounds read in errout of fbcondosetfont When fbcondosetfont fails e.g., due to a memory allocation failure inside vcresize under heavy memory pressure, it jumps to the errout label to roll back the consol...

CVE-2026-53402

The CVE-2026-53402 issue affects the Linux kernel’s fbdev/fbcon path. When fbcon_do_set_font() fails (e.g., vc_resize() under memory pressure), the error path (err_out) only rolls back vc_font.charcount and neglects to restore hi_font state and the screen buffer. This leaves vc_hi_font_mask set, ...

EUVD-2026-45457

In the Linux kernel, the following vulnerability has been resolved: fbdev: fbcon: fix out-of-bounds read in errout of fbcondosetfont When fbcondosetfont fails e.g., due to a memory allocation failure inside vcresize under heavy memory pressure, it jumps to the errout label to roll back the consol...

CVE-2026-53402

In the Linux kernel, the following vulnerability has been resolved: fbdev: fbcon: fix out-of-bounds read in errout of fbcondosetfont When fbcondosetfont fails e.g., due to a memory allocation failure inside vcresize under heavy memory pressure, it jumps to the errout label to roll back the consol...

fbcon: Avoid OOB font access if console rotation fails

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CVE-2026-46191

A flaw was found in the Linux kernel's framebuffer console fbcon component. When console rotation fails, the fbconrotatefont function may keep an old font buffer that is too small for the rotated font. A local user printing to the rotated console with a high character code can trigger an...

UBUNTU-CVE-2026-46191

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 fbconrotatefont. The putcs implementations for the rotated buffer will return early in this case. S...

EUVD-2026-32818

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 fbconrotatefont. The putcs implementations for the rotated buffer will return early in this case. S...

CVE-2026-46191 fbcon: Avoid OOB font access if console rotation fails

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 fbconrotatefont. The putcs implementations for the rotated buffer will return early in this case. S...

PT-2026-44314

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified openSUSE Tumbleweed versions prior to kernel-devel-7.0.11-1.1 Description An out-of-bounds font access occurs in the fbcon rotate font function when console rotation fails. The system retains the ol...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

A flaw was discovered in the Framebuffer Console fbcon within the Linux kernel. When values greater than 32 are provided for font-width and font-height in the fbconsetfont function, due to lack of proper checks, an out-of-bounds situation may occur, resulting in undefined behavior and potentially...

CVE-2026-43123

In the Linux kernel, the following vulnerability has been resolved: fbcon: check return value of con2fbacquirenewinfo If fbconopen fails when called from con2fbacquirenewinfo then info-fbconpar pointer remains NULL which is later dereferenced. Add check for return value of the function...

CVE-2026-43123

In the Linux kernel, the following vulnerability has been resolved: fbcon: check return value of con2fbacquirenewinfo If fbconopen fails when called from con2fbacquirenewinfo then info-fbconpar pointer remains NULL which is later dereferenced. Add check for return value of the function...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-012970)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-012970 advisory. In the Linux kernel, the following vulnerability has been resolved: fbcon: always restore the old font data in fbcondosetfont Commit a5a923038d70 fbdev: fbcon:...

CLSA-2026-1773832495 Fix of 114 CVEs

CVE-2023-53515 - virtio-mmio: don't break lifecycle of vmdev CVE-2023-53515 CVE-2025-39967 - fbcon: fix integer overflow in fbcondosetfont CVE-2025-39967 - fbcon: Fix OOB access in font allocation CVE-2025-39967 CVE-2025-38702 - fbdev: fix potential buffer overflow in doregisterframebuffer...