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CVE-2024-42272

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: sched: act_ct: take care of padding in struct zones_ht_key Blamed commit increased lookup key size from 2 bytes to 16 bytes, be…

Published Aug 17, 2024CWE-908EPSS 0.24%

Overview

CVE-2024-42272 is a high-severity vulnerability. It was published on August 17, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, 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:

sched: act_ct: take care of padding in struct zones_ht_key

Blamed commit increased lookup key size from 2 bytes to 16 bytes,

because zones_ht_key got a struct net pointer.

Make sure rhashtable_lookup() is not using the padding bytes

which are not initialized.

BUG: KMSAN: uninit-value in rht_ptr_rcu include/linux/rhashtable.h:376 [inline]

BUG: KMSAN: uninit-value in __rhashtable_lookup include/linux/rhashtable.h:607 [inline]

BUG: KMSAN: uninit-value in rhashtable_lookup include/linux/rhashtable.h:646 [inline]

BUG: KMSAN: uninit-value in rhashtable_lookup_fast include/linux/rhashtable.h:672 [inline]

BUG: KMSAN: uninit-value in tcf_ct_flow_table_get+0x611/0x2260 net/sched/act_ct.c:329

rht_ptr_rcu include/linux/rhashtable.h:376 [inline]

__rhashtable_lookup include/linux/rhashtable.h:607 [inline]

rhashtable_lookup include/linux/rhashtable.h:646 [inline]

rhashtable_lookup_fast include/linux/rhashtable.h:672

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/2191a54f63225b548fd8346be3611c3219a24738Refgit.kernel.org/stable/c/3a5b68869dbe14f1157c6a24ac71923db060eeabRefgit.kernel.org/stable/c/3ddefcb8f75e312535e2e7d5fef9932019ba60f2Refgit.kernel.org/stable/c/7c03ab555eb1ba26c77fd7c25bdf44a0ac23edeeRefgit.kernel.org/stable/c/d06daf0ad645d9225a3ff6958dd82e1f3988fa64Refgit.kernel.org/stable/c/d7cc186d0973afce0e1237c37f7512c01981fb79Reflists.debian.org/debian-lts-announce/2024/10/msg00003.htmlReflists.debian.org/debian-lts-announce/2025/01/msg00001.htmlRefcert-portal.siemens.com/productcert/html/ssa-265688.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-42272?

CVE-2024-42272 is a high-severity vulnerability. It was published on August 17, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-42272?

This vulnerability has a CVSS 3.1 base score of 7.8, 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-2024-42272?

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-2024-42272?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-42272 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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