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CVE-2026-72344

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable mlx5_lag_get_dev_seq() will return error when the peer isn't…

Published Aug 15, 2026EPSS 0.17%

Overview

CVE-2026-72344 is a high-severity vulnerability. It was published on August 15, 2026 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:

net/mlx5e: TC, skip peer flow cleanup when LAG seq is unavailable

mlx5_lag_get_dev_seq() will return error when the peer isn't in the LAG

or when no device is marked as master. Result bad memory access and kernel

crash[1].

Hence, skip the peer when lookup fails.

Note: In case there are peer flows, they are cleaned before LAG cleared

the master mark.

[1]

RIP: 0010:mlx5e_tc_del_fdb_peers_flow+0x3d/0x350 [mlx5_core]

Call Trace:

<TASK>

mlx5e_tc_clean_fdb_peer_flows+0xc1/0x130 [mlx5_core]

mlx5_esw_offloads_unpair+0x3a/0x400 [mlx5_core]

mlx5_esw_offloads_devcom_event+0xee/0x360 [mlx5_core]

mlx5_devcom_send_event+0x7a/0x140 [mlx5_core]

mlx5_esw_offloads_devcom_cleanup+0x2f/0x90 [mlx5_core]

mlx5e_tc_esw_cleanup+0x28/0xf0 [mlx5_core]

mlx5e_rep_tc_cleanup+0x19/0x30 [mlx5_core]

mlx5e_cleanup_uplink_rep_tx+0x36/0x40 [mlx5_core]

mlx5e_cleanup_rep_tx+0x55/0x60 [mlx5_core]

mlx5e_detach_netdev+0x96/0xf0 [mlx5_core]

ml

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/5a95aa0198af75047d98fb72950642c89dab770fRefgit.kernel.org/stable/c/7bed4af0ced82948d660205efecd551ef8bc3912

How CyberStrike helps

Frequently asked questions

What is CVE-2026-72344?

CVE-2026-72344 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-72344?

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-2026-72344?

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-2026-72344?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-72344 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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