CVE-2026-68260 Affecting linux-6.12 package, versions <6.12.101-1~deb12u1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-ECHOLATEST-LINUX612-18912556
  • published18 Aug 2026
  • disclosed10 Aug 2026

Introduced: 10 Aug 2026

CVE-2026-68260  (opens in a new tab)

How to fix?

Upgrade Echo:latest linux-6.12 to version 6.12.101-1~deb12u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

drm/imagination: acquire vm_ctx->lock before mapping memory to GPU VM

The drm gpuvm code doesn't protect find operation against map operation, and the driver needs to ensure a map operation shouldn't happen when a find operation is in progress.

In some cases a find operation will be in progress when doing map/unmap operations, and the find operation will do a NULL pointer dereference.

An example of the stack trace of such NULL dereference is shown below:

Unable to handle kernel access to user memory without uaccess routines at
virtual address 0000000000000010

[&lt;ffffffff01e989d4&gt;] drm_gpuva_find+0x28/0x6c [drm_gpuvm] [&lt;ffffffff01ed3a40&gt;] pvr_vm_unmap+0x34/0x68 [powervr] [&lt;ffffffff01ec69da&gt;] pvr_ioctl_vm_unmap+0x2e/0x50 [powervr] [&lt;ffffffff8080ce0a&gt;] drm_ioctl_kernel+0x8e/0xdc [&lt;ffffffff8080d016&gt;] drm_ioctl+0x1be/0x3e0 [&lt;ffffffff802bec3e&gt;] __riscv_sys_ioctl+0xba/0xc4 [&lt;ffffffff80d858b2&gt;] do_trap_ecall_u+0x23e/0x3f4 [&lt;ffffffff80d92288&gt;] handle_exception+0x168/0x174

As all occurences of drm_gpuva_find*() are already guarded by vm_ctx->lock, make pvr_vm_map() to acquire this lock to prevent disturbing any find operation. This fixes the NULL deference problem in drm_gpuva_find*().

CVSS Base Scores

version 3.1