Astra Linux – vulnerability in linux-6.1, linux-6.12, linux-6.18

In the Linux kernel, the following vulnerability has been resolved: fbcon: fix NULL pointer dereference for a console without vcdata fbconnewmodelist is called whenever the modelist of a framebuffer changes. For each console mapped to it via fbdisplayi.mode, it reads vcconsi.d and passes the vcnu...

Astra Linux – vulnerability in linux-6.1, linux-6.12, linux-6.18

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 within vcresize under heavy memory pressure, it jumps to the errout label to roll back the consol...

SUSE CVE-2026-98838

In the Linux kernel, the following vulnerability has been resolved: vt: skip screen update for DEC alignment test on backgroup consoles BUG Recently, we encountered a KASAN warning as follows: BUG: KASAN: slab-out-of-bounds in fbpadalignedbuffer+0x11f/0x140 Read of size 1 at addr ff1100015fd9f6a4...

CLSA-2026-1773872435 Fix of 137 CVEs

Miscellaneous Ubuntu changes - update-from-bionic-master repo has been updated Miscellaneous upstream changes - debian: add control and changeg files Ubuntu: 4.15.0-254.265 CVE-2023-53515 - virtio-mmio: don't break lifecycle of vmdev CVE-2023-53515 CVE-2025-39967 - fbcon: fix integer overflow in...

CVE-2026-80786

A flaw was found in the fbdev subsystem of the Linux kernel. This vulnerability occurs because certain user-invoked display mode changes, specifically those not using the FBIOPUTVSCREENINFO ioctl, fail to properly update the fbcon state. A local user could potentially exploit this by triggering a...

UBUNTU-CVE-2026-98838

In the Linux kernel, the following vulnerability has been resolved: vt: skip screen update for DEC alignment test on backgroup consoles BUG Recently, we encountered a KASAN warning as follows: BUG: KASAN: slab-out-of-bounds in fbpadalignedbuffer+0x11f/0x140 Read of size 1 at addr ff1100015fd9f6a4...

CVE-2026-98838 vt: skip screen update for DEC alignment test on backgroup consoles

In the Linux kernel, the following vulnerability has been resolved: vt: skip screen update for DEC alignment test on backgroup consoles BUG Recently, we encountered a KASAN warning as follows: BUG: KASAN: slab-out-of-bounds in fbpadalignedbuffer+0x11f/0x140 Read of size 1 at addr ff1100015fd9f6a4...

CVE-2026-98838: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: vt: skip screen update for DEC alignment test on backgroup consoles BUG Recently, we encountered a KASAN warning as follows: BUG: KASAN: slab-out-of-bounds in fbpadalignedbuffer+0x11f/0x140 Read of size 1 at addr ff1100015fd9f6a4...

PT-2026-128576

In the Linux kernel, the following vulnerability has been resolved: vt: skip screen update for DEC alignment test on backgroup consoles BUG Recently, we encountered a KASAN warning as follows: BUG: KASAN: slab-out-of-bounds in fb pad aligned buffer+0x11f/0x140 Read of size 1 at addr...

Astra Linux – vulnerability in linux-5.15, linux-6.1

In the Linux kernel, the following vulnerability has been resolved: fbcon: always restore the old font data in fbcondosetfont Commit a5a923038d70 fbdev: fbcon: Properly revert changes when vcresize failed started restoring old font data upon failure of vcresize. But it performs so only for user...

Astra Linux – Vulnerability in Linux

A buffer overflow attack in fbcon in the Linux kernel before version 5.9.7 could be exploited by local attackers to read privileged information or potentially cause the kernel to crash. This issue is identified as CID-3c4e0dff2095. This vulnerability arises because the KDFONTOPCOPY function in...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: fbcon: Ensure that modelist is not set on an unregistered console It appears that attempting to write to the “storemodes” sysfs node will run into unregistered consoles: UBSAN: array-index-out-of-bounds in...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: fbcon: Fixed a NULL pointer dereference issue in fbconputcs syzbot has identified a NULL pointer dereference bug in fbcon. Below is a simplified C reproducer: struct param uint8t type; struct tioclselection ts; ; int main struct...

Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (crlsa-2026_72468)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202672468 advisory. kernel: fbcon: Set fbdisplayi-mode to NULL when the mode is released CVE-2025-40323 kernel: ext4: fix e4b bitmap inconsistency reports CVE-2026-45942...

kernel: fbcon: Set fb_display[i]->mode to NULL when the mode is released

A use-after-free vulnerability was identified in the Linux kernel framebuffer console fbcon subsystem. During framebuffer unregistration, the kernel freed the memory for a display mode but did not clear the corresponding fbdisplayi-mode pointer. Subsequent framebuffer ioctl operations could then...

kernel: fbcon: Set fb_display[i]->mode to NULL when the mode is released

A use-after-free vulnerability was identified in the Linux kernel framebuffer console fbcon subsystem. During framebuffer unregistration, the kernel freed the memory for a display mode but did not clear the corresponding fbdisplayi-mode pointer. Subsequent framebuffer ioctl operations could then...

ALSA-2026:72468 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: fbcon: Set fbdisplayi-mode to NULL when the mode is released CVE-2025-40323 kernel: ext4: fix e4b bitmap inconsistency reports CVE-2026-45942 kernel: drm/amdgpu/vcn3: Prevent OOB reads wh...

Important: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: fbcon: Set fbdisplayi-mode to NULL when the mode is released CVE-2025-40323 kernel: ext4: fix e4b bitmap inconsistency reports...

Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: fbcon: Set fbdisplayi-mode to NULL when the mode is released CVE-2025-40323 kernel: ext4: fix e4b bitmap inconsistency reports CVE-2026-45942 kernel: drm/amdgpu/vcn3: Prevent OOB reads wh...

ALSA-2026:72467 Important: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: fbcon: Set fbdisplayi-mode to NULL when the mode is released CVE-2025-40323 kernel: ext4: fix e4b bitmap inconsistency reports...