printer-cracktro

printer cracktro 我提交给 Pwn2Own Toronto 2022 的 Pwn2Own 参赛作品针对两台不同的打印机。 一台基于 Linux（Lexmark），另一台基于 DryOS（CANON）。 在攻破打印机的软件后，这些参赛作品会显示一个小的复古破解开场（crack-intro）动画来庆祝/展示胜利。 我收到了不少关于“这个动画是怎么实现的？？？”的询问。 显然，答案相当平淡……它只不过是用几百行写得并不怎么样的 C 代码把像素推到帧缓冲/LCD 上而已。:- 当时没有时间/实际硬件（尽管打印机确实有某种压电蜂鸣器）来添加好听的芯片音乐，抱歉。;-...

CVE-2026-80786 fbdev: Wrap user-invoked calls to fb_set_var() in helper

In the Linux kernel, the following vulnerability has been resolved: fbdev: Wrap user-invoked calls to fbsetvar in helper Handle fbcon during display updates in fbsetvarfromuser. Check with fbcon if the mode change is possible, update hardware state and finally update fbcon. Update all callers. On...

CVE-2026-80781

CVE-2026-80781 is an out-of-bounds read in the Linux kernel's HID core subsystem. The function hid_set_field() passes field->usage + offset to hid_dump_input() before validating that the offset is within field->report_count. When CONFIG_DEBUG_FS is enabled, hid_dump_input() dereferences the...

The vulnerability of the `komeda_fb_afbc_size_check()` function in the `drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c` file of the Direct Rendering Infrastructure (DRI) driver for the Linux operating system allows a hacker to access protected information or cause a service failure.

The vulnerability of the komedafbafbcsizecheck function in the drivers/gpu/drm/arm/display/komeda/komedaframebuffer.c file, a part of the Direct Rendering Infrastructure DRI driver for the Linux kernel, is related to integer overflow or cyclic shift vulnerabilities. Exploiting this vulnerability...

Important: Red Hat Security Advisory: gstreamer-plugins-bad-free security update

An update for gstreamer-plugins-bad-free is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

CVE-2026-80700 drm/vmwgfx: validate external BO copy bounds for both stride paths

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: validate external BO copy bounds for both stride paths vmwexternalbocopy trusts caller-supplied offsets, strides, and heights and operates on imported dma-buf vmaps: - The equal-stride memcpy bound was clamped after...

CVE-2026-80700 drm/vmwgfx: validate external BO copy bounds for both stride paths

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: validate external BO copy bounds for both stride paths vmwexternalbocopy trusts caller-supplied offsets, strides, and heights and operates on imported dma-buf vmaps: - The equal-stride memcpy bound was clamped after...

Linux Distros Unpatched Vulnerability : CVE-2026-80579

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - fbdev: clear fbinfo-mode before deleting a videomode fbsetvar can delete a mode from info-modelist when userspace passes FBACTIVATEINVMODE through...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098729)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098729 advisory. In the Linux kernel, the following vulnerability has been resolved: fbcon: Set fbdisplayi-mode to NULL when the mode is released Recently, we discovered the followi...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098995)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098995 advisory. In the Linux kernel, the following vulnerability has been resolved: drm/gem: Acquire references on GEM handles for framebuffers A GEM handle can be released while th...

Astra Linux – Vulnerability in Linux 5.10, Linux

The Linux kernel was found vulnerable due to out-of-bounds memory access in the drivers/video/fbdev/sm712fb.c:smtcfbread function. This vulnerability could allow local attackers to cause the kernel to crash...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: drm: Do not accidentally unreference the same framebuffer multiple times due to deadlock handling. If a deadlock occurs after the fb lookup in drmmodepageflipioctl, we proceed to unreference the fb and then retry the entire proce...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: Video: fbdev: amba-clcd: Fixed refcount leak issues. In clcdfbofinitdisplay, we should call ofnodeput for the references returned by ofgraphgetnextendpoint and ofgraphgetremoteportparent, as these references have increased the...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: drm/vc4: Do not check if plane-state-fb == state-fb Currently, when using non-blocking commits, the following kernel warnings can be observed: 110.908514 ------------ Cut here ------------ 110.908529 refcountt: Underflow; Use...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: tty: Fixed out-of-bound access to vmalloc in imageblit. This issue occurs when a user-space program calls ioctl FBIOPUTVSCREENINFO, passing the fbvarscreeninfo structure containing only the fields xres, yres, and bitsperpixel wit...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: In the video: fbdev: arkfb function, the value of screensize is calculated based on user input. If the user provides an incorrect value, the value of screensize may be larger than info-screensize, which may lead to the following...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fbdev/ep93xx-fb: Do not assign to struct fbinfo.dev. Do not assign the Linux device to struct fbinfo.dev. The call to registerframebuffer initializes the field to the fbdev device. Drivers should not override its value. Fixed a b...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: fbdev: fbpm2fb: Avoid potential divide by zero errors In dofbioctl of fbmem.c, if cmd is FBIOPUTVSCREENINFO, var will be copied from the user. Then, the functions fbsetvar and info-fbops-fbcheckvar will be called, which might...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: video: fbdev: nvidiafb: Use strscpy to prevent buffer overflow Coverity reports a possible buffer overflow issue. However, given the ‘static’ scope of nvidiasetupi2cbus, it seems that this issue cannot occur after examining the...

Astra Linux – Vulnerability in Linux

A buffer overflow at the framebuffer layer in the fbcon code within the Linux kernel, prior to version 5.8.15, could be exploited by local attackers to read kernel memory, referred to as CID-6735b4632def...