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🛡️ CVE-2026-43269 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

drm/atmel-hlcdc: fix memory leak from the atomic_destroy_state callback

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

drm/atmel-hlcdc: fix memory leak from the atomic_destroy_state callback

After several commits, the slab memory increases. Some drm_crtc_commit

objects are not freed. The atomic_destroy_state callback only put the

framebuffer. Use the __drm_atomic_helper_plane_destroy_state() function

to put all the objects that are no longer needed.

It has been seen after hours of usage of a graphics application or using

kmemleak:

unreferenced object 0xc63a6580 (size 64):

comm "egt_basic", pid 171, jiffies 4294940784

hex dump (first 32 bytes):

40 50 34 c5 01 00 00 00 ff ff ff ff 8c 65 3a c6 @P4..........e:.

8c 65 3a c6 ff ff ff ff 98 65 3a c6 98 65 3a c6 .e:......e:..e:.

backtrace (crc c25aa925):

kmemleak_alloc+0x34/0x3c

__kmalloc_cache_noprof+0x150/0x1a4

drm_atomic_helper_setup_commit+0x1e8/0x7bc

drm_atomic_helper_commit+0x3c/0x15c

drm_atomic_commit+0xc0/0xf4

drm_atomic_helper_set_config+0x84/0xb8

drm_mode_setcrtc+0x32c/0x810

drm_ioctl+0x20c/0x488

sys_ioctl+0x14c/0xc20

ret_fast_syscall+0x0/0x54

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 none, integrity none, availability high.

Affected software

CVE-2026-43269 is recorded against 2 packages.

  • kernel (from 6.19.0 up to 6.19.6)
  • linux-kernel (from 6.19 up to 6.19.6)

Timeline and source

Published on 6 May 2026 and last revised on 15 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

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

CVE-2026-43269 on other distributions

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

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2026-05-06
Updated 2026-08-20
Modified 2026-08-15

Affected Packages

Software From version Fixed in
kernel 6.19.0 6.19.6
linux-kernel 6.19 6.19.6

References

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