CVE-2024-50041i40e: Fix macvlan leak by synchronizing access to mac_filter_hash
- 8.8HighCVSS base score
- 0.23%Exploitation in 30 daysEPSS · top 86% 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: i40e: Fix macvlan leak by synchronizing access to mac_filter_hash This patch addresses a macvlan leak issue in the i40e driver caused by concurrent access to vsi->mac_filter_hash. The leak occurs when multiple threads attempt to modify the mac_filter_hash simultaneously, leading to inconsistent state and potential memory leaks. To fix this, we now wrap the calls to i40e_del_mac_filter() and zeroing vf->default_lan_addr.addr with spin_lock/unlock_bh(&vsi->mac_filter_hash_lock), ensuring atomic operations and preventing concurrent access. Additionally, we add lockdep_assert_held(&vsi->mac_filter_hash_lock) in i40e_add_mac_filter() to help catch similar issues in the future. Reproduction steps: 1. Spawn VFs and configure port vlan on them. 2. Trigger concurrent macvlan operations (e.g., adding and deleting portvlan and/or mac filters). 3. Observe the potential memory leak and inconsistent state in the mac_filter_hash. This synchronization ensures the integrity of the mac_filter_hash and prevents the described leak.
Timeline
ID reserved
By Linux
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 |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| 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)
- 0.23% · top 86% of all CVEs (12 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: High 8.8.
Affected products
- affected ddec6cbbe22781d17965f1e6386e5a6363c058d2 – < 9db6ce9e2738b05a3672aff4d42169cf3bb5a3e3
- affected fed0d9f13266a22ce1fc9a97521ef9cdc6271a23 – < 9a9747288ba0a9ad4f5c9877f18dd245770ad64e
- affected fed0d9f13266a22ce1fc9a97521ef9cdc6271a23 – < 703c4d820b31bcadf465288d5746c53445f02a55
- affected fed0d9f13266a22ce1fc9a97521ef9cdc6271a23 – < 8831abff1bd5b6bc8224f0c0671f46fbd702b5b2
- affected fed0d9f13266a22ce1fc9a97521ef9cdc6271a23 – < dac6c7b3d33756d6ce09f00a96ea2ecd79fae9fb
- affected 8bfcbaa379694e05290fcff21f4bd40afcf88776
- affected 5.15.54 – < 5.15.168
- affected 5.18.11 – < 5.19
- affected 5.19
- unaffected < 5.19
- unaffected 5.15.168 – ≤ 5.15.*
- unaffected 6.1.113 – ≤ 6.1.*
- unaffected 6.6.57 – ≤ 6.6.*
- unaffected 6.11.4 – ≤ 6.11.*
- unaffected 6.12 – ≤ *
References
References6
- https://git.kernel.org/stable/c/9db6ce9e2738b05a3672aff4d42169cf3bb5a3e3 (opens in a new tab)
- https://git.kernel.org/stable/c/9a9747288ba0a9ad4f5c9877f18dd245770ad64e (opens in a new tab)
- https://git.kernel.org/stable/c/703c4d820b31bcadf465288d5746c53445f02a55 (opens in a new tab)
- https://git.kernel.org/stable/c/8831abff1bd5b6bc8224f0c0671f46fbd702b5b2 (opens in a new tab)
- https://git.kernel.org/stable/c/dac6c7b3d33756d6ce09f00a96ea2ecd79fae9fb (opens in a new tab)
- 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-2024-44986 (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-2024-50041)Record last updated .