CVE-2026-74397

HIGH
MEDIUM Priority: 0.01 BB Relevance: 41/100
Published: 2026-08-15 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

Description

In the Linux kernel, the following vulnerability has been resolved: IB/mlx5: Fix transport-domain rollback and initialize lb mutex earlier mlx5_ib_alloc_transport_domain() allocates a transport domain and then may fail in mlx5_ib_enable_lb(). In that case, the allocated TD is leaked. Fix this by deallocating the TD when mlx5_ib_enable_lb() returns an error. Also return 0 explicitly in the no-loopback-capability success branch, and move dev->lb.mutex initialization to mlx5_ib_stage_init_init().

Affected Software (7)

VendorProductVersion
Linux Linux 146d2f1af3245a10b13eef263687e54f4e253d1d < 6da717ed8a0703a331295fdd5ad8b7eacec216ad
Linux Linux 146d2f1af3245a10b13eef263687e54f4e253d1d < 2c3b2667dad69d56774b79db763acb3a1bee0fc0
Linux Linux 146d2f1af3245a10b13eef263687e54f4e253d1d < 37fc3cc0f924fd8d0f0cf87b92672dec75a32e57
Linux Linux 146d2f1af3245a10b13eef263687e54f4e253d1d < 65e344925fa30abf50c8de8c150b397715fa2066
Linux Linux 146d2f1af3245a10b13eef263687e54f4e253d1d < f88e12c95fc19f719e06ca1e9eb20fdad68ef61a
Linux Linux 146d2f1af3245a10b13eef263687e54f4e253d1d < e79389115b9d27287ff6230a9750675106ed7668
Linux Linux 4.5

Bug Bounty Relevance

41 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.13%
Raw Score 0.001300
Percentile 2.6%
Date 2026-11-01

EPSS Trend

2026-11-01
0.00130
2026-10-31
0.00130
2026-10-30
0.00129
2026-10-29
0.00129

Intelligence Sources

mitre ref →
nvd ref →