🛡️ CVE-2025-68189 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

drm/msm: Fix GEM free for imported dma-bufs

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

drm/msm: Fix GEM free for imported dma-bufs

Imported dma-bufs also have obj->resv != &obj->_resv. So we should

check both this condition in addition to flags for handling the

_NO_SHARE case.

Fixes this splat that was reported with IRIS video playback:

------------[ cut here ]------------

WARNING: CPU: 3 PID: 2040 at drivers/gpu/drm/msm/msm_gem.c:1127 msm_gem_free_object+0x1f8/0x264 [msm]

CPU: 3 UID: 1000 PID: 2040 Comm: .gnome-shell-wr Not tainted 6.17.0-rc7 #1 PREEMPT

pstate: 81400005 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)

pc : msm_gem_free_object+0x1f8/0x264 [msm]

lr : msm_gem_free_object+0x138/0x264 [msm]

sp : ffff800092a1bb30

x29: ffff800092a1bb80 x28: ffff800092a1bce8 x27: ffffbc702dbdbe08

x26: 0000000000000008 x25: 0000000000000009 x24: 00000000000000a6

x23: ffff00083c72f850 x22: ffff00083c72f868 x21: ffff00087e69f200

x20: ffff00087e69f330 x19: ffff00084d157ae0 x18: 0000000000000000

x17: 0000000000000000 x16: ffffbc704bd46b80 x15: 0000ffffd0959540

x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000

x11: ffffbc702e6cdb48 x10: 0000000000000000 x9 : 000000000000003f

x8 : ffff800092a1ba90 x7 : 0000000000000000 x6 : 0000000000000020

x5 : ffffbc704bd46c40 x4 : fffffdffe102cf60 x3 : 0000000000400032

x2 : 0000000000020000 x1 : ffff00087e6978e8 x0 : ffff00087e6977e8

Call trace:

msm_gem_free_object+0x1f8/0x264 [msm] (P)

drm_gem_object_free+0x1c/0x30 [drm]

drm_gem_object_handle_put_unlocked+0x138/0x150 [drm]

drm_gem_object_release_handle+0x5c/0xcc [drm]

drm_gem_handle_delete+0x68/0xbc [drm]

drm_gem_close_ioctl+0x34/0x40 [drm]

drm_ioctl_kernel+0xc0/0x130 [drm]

drm_ioctl+0x360/0x4e0 [drm]

__arm64_sys_ioctl+0xac/0x104

invoke_syscall+0x48/0x104

el0_svc_common.constprop.0+0x40/0xe0

do_el0_svc+0x1c/0x28

el0_svc+0x34/0xec

el0t_64_sync_handler+0xa0/0xe4

el0t_64_sync+0x198/0x19c

---[ end trace 0000000000000000 ]---

------------[ cut here ]------------

Patchwork: https://patchwork.freedesktop.org/patch/676273/

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2025-68189 is recorded against 2 packages.

  • kernel (from 6.17.0 up to 6.17.8)
  • unknown

Timeline and source

Published on 16 December 2025 and last revised on 6 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2025-68189 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-12-16
Updated 2026-08-12
Modified 2026-08-06
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel 6.17.0 6.17.8
unknown — —

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