What is CVE-2024-56577?

CVE-2024-56577 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 6.4 onward and patched in 6.6.64, 6.12.4 and 6.13. CVE-2024-56577 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-56577?

CVE-2024-56577 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2024-56577?

Yes, CVE-2024-56577 has been patched. Fixed versions include 6.6.64, 6.12.4 and 6.13. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-56577 actively exploited?

CVE-2024-56577 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2024-56577

Medium

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 ]---

Package Linux Kernel

Published 2024-12-27

Last modified 2025-10-01

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-476

CVE-2024-56577 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.4 and later are affected. Fixed in 6.6.64, 6.12.4, 6.13 and their respective stable series.

Affected from

≥ 6.4

Fixed in

✓ 6.6.64 6.6.x ✓ 6.12.4 6.12.x ✓ 6.13

References

3 total

Kernel Git
https://git.kernel.org/stable/c/0ba08c21c6a92e6512e73644555120427c9a49d4

Patch
Kernel Git
https://git.kernel.org/stable/c/17af2b39daf12870cac61ffc360e62bc35798afb

Patch
Kernel Git
https://git.kernel.org/stable/c/bc3889a39baf783c64c6d628bbb74d76ce164bb1

Patch

Details

CVE ID CVE-2024-56577

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-12-27

Modified 2025-10-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-56577?

CVE-2024-56577 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 6.4 onward and has been patched in 6.6.64, 6.12.4 and 6.13. CVE-2024-56577 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-56577?

CVE-2024-56577 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2024-56577?

Yes. CVE-2024-56577 has been patched. Fixed versions include 6.6.64, 6.12.4 and 6.13. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-56577 actively exploited?

No. CVE-2024-56577 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.