CVE-2024-42142: net/mlx5: E-switch, Create ingress ACL when needed
Vulnerability summary
CVE-2024-42142 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 13.2% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 21 · Related 18Timeline
- 30-07-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.22% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu93 products
- linux< 6.8.0-48.48
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 6.8.0-1018.20
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 1749c4c51c16e3e078faae0a876d01bafb187a74, < bc3ff8d3c05044de57865ebbb78cca8f7da3e595 | ≥ 1749c4c51c16e3e078faae0a876d01bafb187a74, < 3e3551f8702978cd2221d2614ca6d6727e785324 | ≥ 1749c4c51c16e3e078faae0a876d01bafb187a74, < 83bc1a129f7fd0d7d05036ceb7ee69102624e320 | ≥ 1749c4c51c16e3e078faae0a876d01bafb187a74, < b20c2fb45470d0c7a603613c9cfa5d45720e17f2 | 5.18
- linux_kernel≥ 5.18, < 6.1.98 | ≥ 6.2, < 6.6.39 | ≥ 6.7, < 6.9.9 | 6.10:rc1 | 6.10:rc2 | 6.10:rc3 | 6.10:rc4 | 6.10:rc5 | 6.10:rc6
Debian1 product
- linux< 6.1.98-1 | < 6.9.9-1
3 vendors · 96 products
