What is CVE-2024-36281?

CVE-2024-36281 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 6.6.8 onward and patched in 6.6.33, 6.9.4 and 6.10. CVE-2024-36281 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-36281?

CVE-2024-36281 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-2024-36281?

Yes, CVE-2024-36281 has been patched. Fixed versions include 6.6.33, 6.9.4 and 6.10. If you are running Linux kernel 6.6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-36281 actively exploited?

CVE-2024-36281 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-2024-36281

Medium

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Use mlx5_ipsec_rx_status_destroy to correctly delete status rules rx_create no longer allocates a modify_hdr instance that needs to be cleaned up. The mlx5_modify_header_dealloc call will lead to a NULL pointer dereference. A leak in the rules also previously occurred since there are now two rules populated related to status. BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 109907067 P4D 109907067 PUD 116890067 PMD 0 Oops: 0000 [#1] SMP CPU: 1 PID: 484 Comm: ip Not tainted 6.9.0-rc2-rrameshbabu+ #254 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS Arch Linux 1.16.3-1-1 04/01/2014 RIP: 0010:mlx5_modify_header_dealloc+0xd/0x70 <snip> Call Trace: <TASK> ? show_regs+0x60/0x70 ? __die+0x24/0x70 ? page_fault_oops+0x15f/0x430 ? free_to_partial_list.constprop.0+0x79/0x150 ? do_user_addr_fault+0x2c9/0x5c0 ? exc_page_fault+0x63/0x110 ? asm_exc_page_fault+0x27/0x30 ? mlx5_modify_header_dealloc+0xd/0x70 rx_create+0x374/0x590 rx_add_rule+0x3ad/0x500 ? rx_add_rule+0x3ad/0x500 ? mlx5_cmd_exec+0x2c/0x40 ? mlx5_create_ipsec_obj+0xd6/0x200 mlx5e_accel_ipsec_fs_add_rule+0x31/0xf0 mlx5e_xfrm_add_state+0x426/0xc00 <snip>

Package Linux Kernel

Published 2024-06-21

Last modified 2024-11-21

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-2024-36281 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 6.6.8, 6.7 and later are affected. Fixed in 6.6.33, 6.9.4, 6.10 and their respective stable series.

Affected from

≥ 6.6.8 ≥ 6.7

Fixed in

✓ 6.6.33 6.6.x ✓ 6.9.4 6.9.x ✓ 6.10

References

3 total

Kernel Git
https://git.kernel.org/stable/c/16d66a4fa81da07bc4ed19f4e53b87263c2f8d38

Patch
Kernel Git
https://git.kernel.org/stable/c/b0a15cde37a8388e57573686f650a17208ae1212

Patch
Kernel Git
https://git.kernel.org/stable/c/cc9ac559f2e21894c21ac5b0c85fb24a5cab266c

Patch

Details

CVE ID CVE-2024-36281

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-06-21

Modified 2024-11-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-36281?

CVE-2024-36281 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 6.6.8 onward and has been patched in 6.6.33, 6.9.4 and 6.10. CVE-2024-36281 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-36281?

CVE-2024-36281 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-2024-36281?

Yes. CVE-2024-36281 has been patched. Fixed versions include 6.6.33, 6.9.4 and 6.10. If you are running Linux kernel 6.6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-36281 actively exploited?

No. CVE-2024-36281 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.