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...

CVE-2026-64590

A flaw was found in the Linux kernel's dma-buf subsystem, specifically within the udmabuf component. When the CONFIGDMAAPIDEBUGSG option is enabled, importing a udmabuf into a Direct Rendering Manager DRM driver can trigger a spurious warning about overlapping cacheline mappings. This occurs...

CLSA-2025-1751916475 kernel: Fix of 12 CVEs

udmabuf: fix a buf size overflow issue during udmabuf creation CVE-2025-37803 - bpf: Prevent tail call between progs attached to different hooks CVE-2024-50063 - nfsd: fix possible badness in FREESTATEID CVE-2024-50043 - nfsd: prevent panic for nfsv4.0 closed files in nfs4showopen CVE-2024-46682...

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 user space attempts to access the dma-buf via the CPU, as reported by syzbot: WARNING: CPU: 1 PID...

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 related to the buffer size during the creation of udmabuf. By casting sizelimitmb as a 64-bit value when calculating pglimit...

CentOS Linux 7 [TuxCare] Security Update: bpftool / kernel / kernel-debug / kernel-debug-devel / kernel-devel / etc Multiple Vulnerabilities (CENTOS7:CLSA-2025:1755681456)

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2025:1755681456 advisory. - In the Linux kernel, the following vulnerability has been resolved: can: bcm: Fix UAF in bcmprocshow BUG: KASAN: slab-use-after-free i...

Astra Linux – Vulnerability in Linux 5.10

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 – Vulnerability in Linux 5.10, Linux

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...

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...

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

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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...

AZL-94538 CVE-2026-64590 affecting package kernel for versions less than 6.6.150.1-1

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

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...

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

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...

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...

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...