CVE-2026-74397IB/mlx5: Fix transport-domain rollback and initialize lb mutex earlier
- 7.8HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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().
Timeline
ID reserved
By Linux
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 146d2f1af3245a10b13eef263687e54f4e253d1d – < 6da717ed8a0703a331295fdd5ad8b7eacec216ad
- affected 146d2f1af3245a10b13eef263687e54f4e253d1d – < 2c3b2667dad69d56774b79db763acb3a1bee0fc0
- affected 146d2f1af3245a10b13eef263687e54f4e253d1d – < 37fc3cc0f924fd8d0f0cf87b92672dec75a32e57
- affected 146d2f1af3245a10b13eef263687e54f4e253d1d – < 65e344925fa30abf50c8de8c150b397715fa2066
- affected 146d2f1af3245a10b13eef263687e54f4e253d1d – < f88e12c95fc19f719e06ca1e9eb20fdad68ef61a
- affected 146d2f1af3245a10b13eef263687e54f4e253d1d – < e79389115b9d27287ff6230a9750675106ed7668
- affected 4.5
- unaffected < 4.5
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/6da717ed8a0703a331295fdd5ad8b7eacec216ad (opens in a new tab)
- https://git.kernel.org/stable/c/2c3b2667dad69d56774b79db763acb3a1bee0fc0 (opens in a new tab)
- https://git.kernel.org/stable/c/37fc3cc0f924fd8d0f0cf87b92672dec75a32e57 (opens in a new tab)
- https://git.kernel.org/stable/c/65e344925fa30abf50c8de8c150b397715fa2066 (opens in a new tab)
- https://git.kernel.org/stable/c/f88e12c95fc19f719e06ca1e9eb20fdad68ef61a (opens in a new tab)
- https://git.kernel.org/stable/c/e79389115b9d27287ff6230a9750675106ed7668 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-59544 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-74397)Record last updated .