Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/userq: Fixed a reference leak in amdgpuuserqwaitioctl. Also, removed the reference to syncobj and timeline fence when aborting the ioctl, as the output array became too small. Selected from the commit...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: drm/i915/active: Fixed the misuse of non-idle barriers as fence trackers. Users reported errors related to list corruption when using i915 perf with a number of concurrently running graphics applications. Root cause analysis...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Install a stub fence into potential unused fence pointers. When using cpu to update page tables, VM update fences are unused. Instead, install a stub fence into these fence pointers, rather than setting them to NULL...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: dma-buf/dma-resv: Stop leaking data upon a failure of krealloc. Currently, when dmaresvgetfences fails, it will leak the previously allocated array if the fence iteration was restarted and kreallocarray failed. The old array must...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: drm/msm: Fixed the leak in the waitfence submitqueue operation. We were not releasing the reference to submitqueue in all paths. In particular, this was not done when the fence had already been signaled. We have created a help...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: drm/imagination: avoided deadlock on fence release The processing of fence release in the scheduler queue is performed on a workqueue, rather than directly in the release function itself. Deadlock issues have been fixed, such ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: drm/xe/migrate: prevented potential UAF Unauthorized Arbitrary File Access. If we encounter the error path, the previous fence if there is one has already been put. Therefore, performing a fencewait might lead to UAF. We need to...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: drm/amdgpu: Refactored amdgpugemvaioctl to handle last fence updates and timeline management v4. This commit simplifies the amdgpugemvaioctl function by introducing the following key updates: - Moved the logic for managing the...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: dma-buf/syncfile: Do not leak fences during merge failures. Each call to addfence performs a dmafenceget operation on the relevant fence. In error-prone scenarios, we did not call dmafenceput, resulting in all those fences bei...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: drm/msm: Ensure that lastfence is always updated. Update lastfence in the vm-bind path, rather than the kernel-managed path. lastfence is used to wait for work to complete in vmbind contexts, but not in kernel-managed contexts...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: riscv: Flush the current CPU’s ICache before flushing other CPUs. On SiFive Unmatched, I recently encountered the following bug during bootup: 0.000000 ftrace: allocating 36610 entries in 144 pages 0.000000 Oops – illegal...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Nouveau: The offload fence uevents function is now processed via the workqueue. This should prevent a deadlock between the fctx lock and the irq lock. The processing of uevents is offloaded from the irq to the workqueue...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: drm/panthor: Fix for dma-fence safe access rules Commit 506aa8b02a8d6 “dma-fence: Add safe access helpers and document the rules” details the dma-fence safe access rules. The most common issue is that...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/fence: Fixed an oops due to incorrect drmsched init/fini calls. Currently, amdgpu calls drmschedfini from the fence driver’s fini routine. Such a call is expected to occur only after the respective init function,...

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/vmwgfx: Fixed invalid reads in “fence signaled events”. The length of the dmrevent structure was correctly set to the actual size of the structure that is actually used. The length of the dmrevent was set to the parent...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: drm/amd/amdgpu/amdgpucs: fixed the reference count leak of a dmafence object. This issue occurs in an error path within amdgpucsfencetohandleioctl. When info-in.what falls under the default case, the function simply returns...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fixed the issue where the fence was put before waiting in amdgpuamdkfdsubmitib. The amdgpuamdkfdsubmitib function submits a GPU job and obtains a fence from amdgpuibschedule. This fence is used to wait for the job to...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/userq: Fixed the issue of a reference leak during queue teardown in version 2. The user mode queue maintains a pointer to the most recent fence in userq-lastfence. This pointer retains an additional dmafence reference...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: drm/amdgpu/mes: fixed the use-after-free issue. Deleted the fence fallback timer to fix the ramdom use-after-free issue. v2: moved to amdgpumes.c...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: drm/xe/sync: Fixed the memory leak caused by improper release of the user fence when dmafencechainalloc fails. When dmafencechainalloc fails, it is necessary to properly release the reference to the user fence to prevent a memory...