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Review reviewHigh

CVE-2026-64098

Linux

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: use uninterruptible resv lock for plane updates virtio_gpu_cursor_plane_update() and virtio_gpu_resource_flush() lock the framebuffer BO's dma_resv via virtio_gpu_array_lock_resv() and ignore its return value. The function can fail with -EINTR from dma_resv_lock_interruptible() (signal during lock wait) or with -ENOMEM from dma_resv_reserve_fences() (fence slot allocation), leaving the resv lock not held. The queue path then walks the object array and calls dma_resv_add_fence(), which requires the lock held; wit...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.07.20
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: drm/virtio: use uninterruptible resv lock for plane updates virtio_gpu_cursor_plane_update() and virtio_gpu_resource_flush() lock the framebuffer BO's dma_resv via virtio_gpu_array_lock_resv() and ignore its return value. The function can fail with -EINTR from dma_resv_lock_interruptible() (signal during lock wait) or with -ENOMEM from dma_resv_reserve_fences() (fence slot allocation), leaving the resv lock not held. The queue path then walks the object array and calls dma_resv_add_fence(), which requires the lock held; wit...

Affected product and versions

Product
Linux
Affected versions
>= 5cfd31c5b3a321aed0c9621b7b45efa2942056f8 < c86077d512ee980cc91322211d35dbcd3175f64c, >= 5cfd31c5b3a321aed0c9621b7b45efa2942056f8 < 21ab64c77a30d56efc506c8fa2ad8959f8ce3d36, >= 5cfd31c5b3a321aed0c9621b7b45efa2942056f8 < 7930eee22cd3df61e85be8aa512032ab303b7167, >= 5cfd31c5b3a321aed0c9621b7b45efa2942056f8 < 8fadd01cf461fee5bb11506621339c548447e5c7, >= 5cfd31c5b3a321aed0c9621b7b45efa2942056f8 < a2359a411b15f495d12cfda6a7db6855ebb7f90f, >= 5cfd31c5b3a321aed0c9621b7b45efa2942056f8 < 9af1b6e175c82daf4b423da339a722d8e67a735a, >= 5.7
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available