CVE-2024-42142net/mlx5: E-switch, Create ingress ACL when needed
- 5.5MediumCVSS base score
- 0.22%Exploitation in 30 daysEPSS · top 87% 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: net/mlx5: E-switch, Create ingress ACL when needed Currently, ingress acl is used for three features. It is created only when vport metadata match and prio tag are enabled. But active-backup lag mode also uses it. It is independent of vport metadata match and prio tag. And vport metadata match can be disabled using the following devlink command: # devlink dev param set pci/0000:08:00.0 name esw_port_metadata \ value false cmode runtime If ingress acl is not created, will hit panic when creating drop rule for active-backup lag mode. If always create it, there will be about 5% performance degradation. Fix it by creating ingress acl when needed. If esw_port_metadata is true, ingress acl exists, then create drop rule using existing ingress acl. If esw_port_metadata is false, create ingress acl and then create drop rule.
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 22 months later
· 22 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 |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.22% · top 87% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 1749c4c51c16e3e078faae0a876d01bafb187a74 – < bc3ff8d3c05044de57865ebbb78cca8f7da3e595
- affected 1749c4c51c16e3e078faae0a876d01bafb187a74 – < 3e3551f8702978cd2221d2614ca6d6727e785324
- affected 1749c4c51c16e3e078faae0a876d01bafb187a74 – < 83bc1a129f7fd0d7d05036ceb7ee69102624e320
- affected 1749c4c51c16e3e078faae0a876d01bafb187a74 – < b20c2fb45470d0c7a603613c9cfa5d45720e17f2
- affected 5.18
- unaffected < 5.18
- unaffected 6.1.98 – ≤ 6.1.*
- unaffected 6.6.39 – ≤ 6.6.*
- unaffected 6.9.9 – ≤ 6.9.*
- unaffected 6.10 – ≤ *
References
References5
- https://git.kernel.org/stable/c/bc3ff8d3c05044de57865ebbb78cca8f7da3e595 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/3e3551f8702978cd2221d2614ca6d6727e785324 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/83bc1a129f7fd0d7d05036ceb7ee69102624e320 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/b20c2fb45470d0c7a603613c9cfa5d45720e17f2 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (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-2024-39974 (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-2024-42142)Record last updated .