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CVE-2024-26961

7.0 · HIGH

In the Linux kernel, the following vulnerability has been resolved: mac802154: fix llsec key resources release in mac802154_llsec_key_del mac802154_llsec_key_del() can free resources of a key dir…

Published May 1, 2024CWE-416EPSS 0.24%

Overview

CVE-2024-26961 is a high-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

mac802154: fix llsec key resources release in mac802154_llsec_key_del

mac802154_llsec_key_del() can free resources of a key directly without

following the RCU rules for waiting before the end of a grace period. This

may lead to use-after-free in case llsec_lookup_key() is traversing the

list of keys in parallel with a key deletion:

refcount_t: addition on 0; use-after-free.

WARNING: CPU: 4 PID: 16000 at lib/refcount.c:25 refcount_warn_saturate+0x162/0x2a0

Modules linked in:

CPU: 4 PID: 16000 Comm: wpan-ping Not tainted 6.7.0 #19

Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014

RIP: 0010:refcount_warn_saturate+0x162/0x2a0

Call Trace:

<TASK>

llsec_lookup_key.isra.0+0x890/0x9e0

mac802154_llsec_encrypt+0x30c/0x9c0

ieee802154_subif_start_xmit+0x24/0x1e0

dev_hard_start_xmit+0x13e/0x690

sch_direct_xmit+0x2ae/0xbc0

__dev_queue_xmit+0x11dd/0x3c20

dgram_sendmsg+0x90b/0xd60

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/068ab2759bc0b4daf0b964de61b2731449c86531Refgit.kernel.org/stable/c/20d3e1c8a1847497269f04d874b2a5818ec29e2dRefgit.kernel.org/stable/c/49c8951680d7b76fceaee89dcfbab1363fb24fd1Refgit.kernel.org/stable/c/640297c3e897bd7e1481466a6a5cb9560f1edb88Refgit.kernel.org/stable/c/d3d858650933d44ac12c1f31337e7110c2071821Refgit.kernel.org/stable/c/dcd51ab42b7a0431575689c5f74b8b6efd45fc2fRefgit.kernel.org/stable/c/e8a1e58345cf40b7b272e08ac7b32328b2543e40Refgit.kernel.org/stable/c/068ab2759bc0b4daf0b964de61b2731449c86531Refgit.kernel.org/stable/c/20d3e1c8a1847497269f04d874b2a5818ec29e2dRefgit.kernel.org/stable/c/49c8951680d7b76fceaee89dcfbab1363fb24fd1

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26961?

CVE-2024-26961 is a high-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2024-26961?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-26961?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-26961?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26961 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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