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CVE-2024-26595

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path When calling mlxsw_sp_acl_tcam_region_destroy() from an er…

Published Feb 23, 2024CWE-476EPSS 0.23%

Overview

CVE-2024-26595 is a medium-severity vulnerability. It was published on February 23, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path

When calling mlxsw_sp_acl_tcam_region_destroy() from an error path after

failing to attach the region to an ACL group, we hit a NULL pointer

dereference upon 'region->group->tcam' [1].

Fix by retrieving the 'tcam' pointer using mlxsw_sp_acl_to_tcam().

[1]

BUG: kernel NULL pointer dereference, address: 0000000000000000

[...]

RIP: 0010:mlxsw_sp_acl_tcam_region_destroy+0xa0/0xd0

[...]

Call Trace:

mlxsw_sp_acl_tcam_vchunk_get+0x88b/0xa20

mlxsw_sp_acl_tcam_ventry_add+0x25/0xe0

mlxsw_sp_acl_rule_add+0x47/0x240

mlxsw_sp_flower_replace+0x1a9/0x1d0

tc_setup_cb_add+0xdc/0x1c0

fl_hw_replace_filter+0x146/0x1f0

fl_change+0xc17/0x1360

tc_new_tfilter+0x472/0xb90

rtnetlink_rcv_msg+0x313/0x3b0

netlink_rcv_skb+0x58/0x100

netlink_unicast+0x244/0x390

netlink_sendmsg+0x1e4/0x440

____sys_sendmsg+0x164/0x260

___sys_sendmsg+0x9a/0xe0

__sys_sendmsg+0x7a/0xc

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/75fa2d8b3c0175b519c99ace54ab8474cfd0077eRefgit.kernel.org/stable/c/817840d125a370626895df269c50c923b79b0a39Refgit.kernel.org/stable/c/d0a1efe417c97a1e9b914056ee6b86f1ef75fe1fRefgit.kernel.org/stable/c/efeb7dfea8ee10cdec11b6b6ba4e405edbe75809Refgit.kernel.org/stable/c/817840d125a370626895df269c50c923b79b0a39Refgit.kernel.org/stable/c/d0a1efe417c97a1e9b914056ee6b86f1ef75fe1fRefgit.kernel.org/stable/c/efeb7dfea8ee10cdec11b6b6ba4e405edbe75809Reflists.debian.org/debian-lts-announce/2025/03/msg00001.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-26595?

CVE-2024-26595 is a medium-severity vulnerability. It was published on February 23, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26595?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-26595?

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-2024-26595?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-26595 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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