CVE-2025-38343: wifi: mt76: mt7996: drop fragments with multicast or broadcast RA
Vulnerability summary
CVE-2025-38343 is a high (CVSS 8.3) vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16.5% of scored vulnerabilities.
Not severe (CVSS 8.3, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 40 · Related 38Timeline
- 10-07-2025PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: drop fragments with multicast or broadcast RA IEEE 802.11 fragmentation can only be applied to unicast frames. Therefore, drop fragments with multicast or broadcast RA. This patch addresses vulnerabilities such as CVE-2020-26145.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.3HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.25%
Chance of exploitation in the next 30 days
Percentile
17%
Versus all other CVEs
30-day change
Increase +0.02 pp
From 0.23% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not 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: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu120 products
- linux< 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 98686cd21624c75a043e96812beadddf4f6f48e5, < 24900688ee47071aa6a61e78473999b5b80f0423 | ≥ 98686cd21624c75a043e96812beadddf4f6f48e5, < d4b93f9c2f666011dcf810050ef60a6b8d06f186 | ≥ 98686cd21624c75a043e96812beadddf4f6f48e5, < 5fd5b8132b5de08c99eea003f7715ff2e361b007 | ≥ 98686cd21624c75a043e96812beadddf4f6f48e5, < 80fda1cd7b0a1edd0849dc71403a070d0922118d | 6.2
- linux_kernel≥ 6.2, < 6.6.95 | ≥ 6.7, < 6.12.35 | ≥ 6.13, < 6.15.4
Debian1 product
- linux< 6.12.35-1
3 vendors · 123 products