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CVE-2026-72345

net/mlx5: LAG, Fix off-by-one in single-FDB error rollback

HIGH
7.8
CVSS Score
Published: August 15, 2026 at 05:55 AM UTC
Updated: October 16, 2026 at 07:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: LAG, Fix off-by-one in single-FDB error rollback On failure at index i, the reverse cleanup loop in mlx5_lag_create_single_fdb() starts from i, so the failed index itself is rolled back. That can operate on uninitialized state or double-tear-down a rule the add_one path already self-rolled-back. Start the rollback from i - 1 so only successfully-installed entries are undone.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
6.12.1136.148330e9f0214c0f0b73c57b3f3f619b64c8035029ddbb5ddc43ad000a984149db5af1133433938404
Vendor states this is fixed in 0f0e4ae6975c773f7854fc48932a267f6c79088f (fixed)
Vendor states this is fixed in 40cc06bf71476932e5d139fa326dcd0372766e16 (fixed)
Vendor states this is fixed in 6.14 (unaffected)
Vendor states this is fixed in 6.18.57 (unaffected)
Vendor states this is fixed in 7.1.5 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Source: cverecord
https://git.kernel.org/stable/c/40cc06bf71476932e5d139fa326dcd0372766e16
Source: cverecord
https://git.kernel.org/stable/c/0f0e4ae6975c773f7854fc48932a267f6c79088f
Source: cverecord
https://git.kernel.org/stable/c/0be672071d6e8c4d3be6a8f796d8e47198763770

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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