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🛡️ CVE-2024-56577 — kernel

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

Description

media: mtk-jpeg: Fix null-ptr-deref during unload module

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

media: mtk-jpeg: Fix null-ptr-deref during unload module

The workqueue should be destroyed in mtk_jpeg_core.c since commit

09aea13ecf6f ("media: mtk-jpeg: refactor some variables"), otherwise

the below calltrace can be easily triggered.

[ 677.862514] Unable to handle kernel paging request at virtual address dfff800000000023

[ 677.863633] KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f]

...

[ 677.879654] CPU: 6 PID: 1071 Comm: modprobe Tainted: G O 6.8.12-mtk+gfa1a78e5d24b+ #17

...

[ 677.882838] pc : destroy_workqueue+0x3c/0x770

[ 677.883413] lr : mtk_jpegdec_destroy_workqueue+0x70/0x88 [mtk_jpeg_dec_hw]

[ 677.884314] sp : ffff80008ad974f0

[ 677.884744] x29: ffff80008ad974f0 x28: ffff0000d7115580 x27: ffff0000dd691070

[ 677.885669] x26: ffff0000dd691408 x25: ffff8000844af3e0 x24: ffff80008ad97690

[ 677.886592] x23: ffff0000e051d400 x22: ffff0000dd691010 x21: dfff800000000000

[ 677.887515] x20: 0000000000000000 x19: 0000000000000000 x18: ffff800085397ac0

[ 677.888438] x17: 0000000000000000 x16: ffff8000801b87c8 x15: 1ffff000115b2e10

[ 677.889361] x14: 00000000f1f1f1f1 x13: 0000000000000000 x12: ffff7000115b2e4d

[ 677.890285] x11: 1ffff000115b2e4c x10: ffff7000115b2e4c x9 : ffff80000aa43e90

[ 677.891208] x8 : 00008fffeea4d1b4 x7 : ffff80008ad97267 x6 : 0000000000000001

[ 677.892131] x5 : ffff80008ad97260 x4 : ffff7000115b2e4d x3 : 0000000000000000

[ 677.893054] x2 : 0000000000000023 x1 : dfff800000000000 x0 : 0000000000000118

[ 677.893977] Call trace:

[ 677.894297] destroy_workqueue+0x3c/0x770

[ 677.894826] mtk_jpegdec_destroy_workqueue+0x70/0x88 [mtk_jpeg_dec_hw]

[ 677.895677] devm_action_release+0x50/0x90

[ 677.896211] release_nodes+0xe8/0x170

[ 677.896688] devres_release_all+0xf8/0x178

[ 677.897219] device_unbind_cleanup+0x24/0x170

[ 677.897785] device_release_driver_internal+0x35c/0x480

[ 677.898461] device_release_driver+0x20/0x38

...

[ 677.912665] ---[ end trace 0000000000000000 ]---

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.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

CVE-2024-56577 is recorded against 2 packages.

  • kernel (from 6.7.0 up to 6.12.4)
  • linux-kernel (from 6.7 up to 6.12.4)

Timeline and source

Published on 27 December 2024 and last revised on 12 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)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2024-56577 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 2024-12-27
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.7.0 6.12.4
linux-kernel 6.7 6.12.4

Similar Threats

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