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CVE-2024-40920net: bridge: mst: fix suspicious rcu usage in br_mst_set_state
- 7.1HighCVSS base score
- 0.41%Exploitation in 30 daysEPSS · top 64% 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: bridge: mst: fix suspicious rcu usage in br_mst_set_state I converted br_mst_set_state to RCU to avoid a vlan use-after-free but forgot to change the vlan group dereference helper. Switch to vlan group RCU deref helper to fix the suspicious rcu usage warning.
Timeline
ID reserved
By Linux
Published
- 2 years later
· 2 years 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 | High7.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H |
| NVDNVD · Modified | 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)
- 0.41% · top 64% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected 8ca9a750fc711911ef616ceb627d07357b04545e – < caaa2129784a04dcade0ea92c12e6ff90bbd23d8
- affected 4488617e5e995a09abe4d81add5fb165674edb59 – < 7caefa2771722e65496d85b62e1dc4442b7d1345
- affected e43dd2b1ec746e105b7db5f9ad6ef14685a615a4 – < 406bfc04b01ee47e4c626f77ecc7d9f85135b166
- affected 3a7c1661ae1383364cd6092d851f5e5da64d476b – < 546ceb1dfdac866648ec959cbc71d9525bd73462
- affected a2b01e65d9ba8af2bb086d3b7288ca53a07249ac
- affected 6.8.12 – < 6.9
- affected 6.1.93 – < 6.1.95
- affected 6.6.33 – < 6.6.35
- affected 6.9.3 – < 6.9.6
References
References5
- https://git.kernel.org/stable/c/caaa2129784a04dcade0ea92c12e6ff90bbd23d8 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/7caefa2771722e65496d85b62e1dc4442b7d1345 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/406bfc04b01ee47e4c626f77ecc7d9f85135b166 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/546ceb1dfdac866648ec959cbc71d9525bd73462 (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-2024-38731 (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-2024-40920)Record last updated .