CVE-2023-2008

CVE-2023-2008 Proof of concept exploit for CVE-2023-2008, a bug in the udmabuf driver of the Linux kernel fixed in 5.19-rc4. You can find a description of the bug and the exploitation strategy in our blog post. The exploit was tested on a vulnerable Ubuntu 22.04, and it requires access to the...

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

In the Linux kernel, the following vulnerabilities have been resolved: udmabuf: fixed an overflow issue during the creation of udmabuf by casting sizelimitmb as a u64 type when calculating pglimit...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: udmabuf: Set ubuf-sg = NULL if the creation of the sg table fails. When the user space attempts to map the dmabuf, and for some reason e.g., OOM, the creation of the sg table fails, ubuf-sg needs to be set to NULL. Otherwise, whe...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: udmabuf: Set the DMA mask for the udmabuf device v2 If the DMA mask is not set explicitly, the following warning occurs when the userspace attempts to access the dma-buf via the CPU, as reported by syzbot: WARNING: CPU: 1 PID:...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A flaw was discovered in the udmabuf device driver of the Linux kernel, within a fault handler. This issue arises due to the lack of proper validation of user-supplied data, which can lead to memory access beyond the end of an array. This may allow an attacker to escalate privileges and execute...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: udmabuf: validate ubuf-pagecount Syzbot reported a GPF in sgallocAppendTableFromPages. The problem lies in ubuf-pages == ZEROPTR. ubuf-pagecount is calculated based on arguments passed from user-space. If the user creates an...

SUSE CVE-2026-64590

In the Linux kernel, the following vulnerability has been resolved: dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning When CONFIGDMAAPIDEBUGSG is enabled, importing a udmabuf into a DRM driver e.g. amdgpu for video playback in GNOME Videos / Showtime triggers a spurious...

CVE-2026-64590

In the Linux kernel, the following vulnerability has been resolved: dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning When CONFIGDMAAPIDEBUGSG is enabled, importing a udmabuf into a DRM driver e.g. amdgpu for video playback in GNOME Videos / Showtime triggers a spurious...

UBUNTU-CVE-2026-64590

In the Linux kernel, the following vulnerability has been resolved: dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning When CONFIGDMAAPIDEBUGSG is enabled, importing a udmabuf into a DRM driver e.g. amdgpu for video playback in GNOME Videos / Showtime triggers a spurious...

CVE-2026-64590 dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning

In the Linux kernel, the following vulnerability has been resolved: dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning When CONFIGDMAAPIDEBUGSG is enabled, importing a udmabuf into a DRM driver e.g. amdgpu for video playback in GNOME Videos / Showtime triggers a spurious...

CVE-2026-64590

The CVE-2026-64590 entry concerns the Linux kernel dma-buf/udmabuf path where, with CONFIG_DMA_API_DEBUG_SG enabled, importing udmabuf into a DRM driver (e.g., amdgpu) could emit a spurious cacheline EEXIST warning due to overlapping per-page SG mappings. The fix is to pass DMA_ATTR_SKIP_CPU_SYNC...

EUVD-2026-53777

In the Linux kernel, the following vulnerability has been resolved: dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning When CONFIGDMAAPIDEBUGSG is enabled, importing a udmabuf into a DRM driver e.g. amdgpu for video playback in GNOME Videos / Showtime triggers a spurious...

CVE-2026-64590 dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning

In the Linux kernel, the following vulnerability has been resolved: dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning When CONFIGDMAAPIDEBUGSG is enabled, importing a udmabuf into a DRM driver e.g. amdgpu for video playback in GNOME Videos / Showtime triggers a spurious...

CVE-2026-64590

In the Linux kernel, the following vulnerability has been resolved: dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning When CONFIGDMAAPIDEBUGSG is enabled, importing a udmabuf into a DRM driver e.g. amdgpu for video playback in GNOME Videos / Showtime triggers a spurious...

PT-2026-68423

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the dma-buf/udmabuf component where importing a udmabuf into a DRM driver triggers a spurious cacheline tracking warning when CONFIG DMA API DEBUG SG is enabled. This...

Linux Distros Unpatched Vulnerability : CVE-2026-64590

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning When CONFIGDMAAPIDEBUGSG is enabled, importing a udmabuf into a DRM driver e.g. amdgpu...

CVE-2026-64590

In the Linux kernel, the following vulnerability has been resolved: dma-buf/udmabuf: skip redundant cpu sync to fix cacheline EEXIST warning When CONFIGDMAAPIDEBUGSG is enabled, importing a udmabuf into a DRM driver e.g. amdgpu for video playback in GNOME Videos / Showtime triggers a spurious...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013538)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013538 advisory. In the Linux kernel, the following vulnerability has been resolved: udmabuf: Set ubuf-sg = NULL if the creation of sg table fails When userspace tries to map the...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010883)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010883 advisory. In the Linux kernel, the following vulnerability has been resolved: udmabuf: Set ubuf-sg = NULL if the creation of sg table fails When userspace tries to map the...

The vulnerability of the `udmabuf_dev_init()` function in the Linux kernel’s `drivers/dma-buf/udmabuf.c` file allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the udmabufdevinit function in the Linux kernel’s drivers/dma-buf/udmabuf.c file is related to improper initialization. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility of the protected information...