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

In the Linux kernel, the following vulnerability has been resolved: fbdev: core: fbcvt: avoid division by 0 in fbcvthperiod In fbfindmodecvt, if mode-refresh happens to be 0x80000000, cvt.frefresh will become 0 when multiplied by 2 due to overflow. This value is then passed to fbcvthperiod, where...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: In the bitPutcs function, the bound-check glyph index was derived from the character value masked by 0xff or 0x1ff. This may lead to reading beyond the end of the built-in font array, exceeding the actual number o...

fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info

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CVE-2026-46065

A flaw was found in the Linux kernel's framebuffer device fbdev deferred I/O defio mechanism. A local user with an active mapping of graphics memory could trigger a device hot-unplug, leading to the system accessing undefined memory. This can result in system instability or a crash, causing a...

UBUNTU-CVE-2026-46065

In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: Disconnect deferred I/O from the lifetime of struct fbinfo Hold state of deferred I/O in struct fbdeferrediostate. Allocate an instance as part of initializing deferred I/O and remove it only after the final mapping...

CVE-2026-46065

In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: Disconnect deferred I/O from the lifetime of struct fbinfo Hold state of deferred I/O in struct fbdeferrediostate. Allocate an instance as part of initializing deferred I/O and remove it only after the final mapping...

CVE-2026-46065

In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: Disconnect deferred I/O from the lifetime of struct fbinfo Hold state of deferred I/O in struct fbdeferrediostate. Allocate an instance as part of initializing deferred I/O and remove it only after the final mapping...

PT-2026-43932

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the fbdev: defio component where deferred I/O was tied to the lifetime of struct fb info. This created a condition where a device hot-unplug could occur while user space...

PT-2026-43821

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the au1200fb drv probe function within the fbdev au1200fb component. The issue is triggered when the platform get irq function fails, causing the system to return...

CVE-2026-46065

fbdev: defio: Disconnect deferred I/O from the lifetime of struct fbinfo...

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

In the Linux kernel, the following vulnerabilities have been resolved: drm/client: Fixed a memory leak in drmclienttargetcloned. The dmtmode variable is allocated but never freed within this function. This issue was discovered with the ast driver, but most drivers that use the generic fbdevsetup...

Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerability has been resolved: drm/fb-helper: Fixed out-of-bounds access issues. The memory range was clipped to the size of the screen buffer to prevent out-of-bounds access during the damage handling in fbdev’ deferred I/O operations. fbdev’ deferred I/O can...

CVE-2026-43264

In the Linux kernel, the following vulnerability has been resolved: fbdev: of: displaytiming: fix refcount leak in ofgetdisplaytimings ofparsephandle returns a devicenode with refcount incremented, which is stored in 'entry' and then copied to 'nativemode'. When the error paths at lines 184 or 19...

CVE-2026-43202

CVE-2026-43202 affects the Linux kernel fbdev vt8500lcdfb driver. The root cause is a memory leak: fbi->fb.screen_buffer is allocated with dma_alloc_coherent() but is not freed on error paths due to missing dma_free_coherent() cleanup. This can exhaust system memory and cause DoS. Multiple OSV...

CVE-2026-43202 fbdev: vt8500lcdfb: fix missing dma_free_coherent()

In the Linux kernel, the following vulnerability has been resolved: fbdev: vt8500lcdfb: fix missing dmafreecoherent fbi-fb.screenbuffer is allocated with dmaalloccoherent but is not freed if the error path is reached...

PT-2026-37542

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description In the fbdev component, specifically within the vt8500lcdfb driver, the fbi-fb.screen buffer is allocated using the dma alloc coherent function but is not properly released via dma free...

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 – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: drm/i915: Fixed the system suspension without fbdev being initialized. If fbdev is not initialized for some reason—in practice on platforms without a display—suspending fbdev should be skipped during system suspension. This...

fbdev: udlfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO

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fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO

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