CVE-2026-64515wifi: mac80211: fix MLE defragmentation
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix MLE defragmentation If either reconf or EPCS multi-link element (MLE) is contained in a non-transmitted profile, the defragmentation routine is called with a pointer to the defragmented copy, but the original elements. This is incorrect for two reasons: - if the original defragmentation was needed, it will not find the correct data - if the original frame is at a higher address, the parsing will potentially overrun the heap data (though given the layout of the buffers, only into the new defragmentation buffer, and then it has to stop and fail once that's filled with copied data. Fix it by tracking the container along with the pointer and in doing so also unify the two almost identical defragmentation routines.
- CVSS
- 8.3 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 4d70e9c5488dd57ff5fcabe4d4ecf3d9dd4555ff builds before 1f573e17bcb7275ddd1c8f47f46ae0faf0e902a4; from 4d70e9c5488dd57ff5fcabe4d4ecf3d9dd4555ff before 55c479aae99b120489a432db9c717484e523dfd6; from 4d70e9c5488dd57ff5fcabe4d4ecf3d9dd4555ff before 722b3f86df80644463d29fe5451e30a617f74500; from 4d70e9c5488dd57ff5fcabe4d4ecf3d9dd4555ff before a74e893f30db64cdce0fc7a96d3baa417bcd55f5 | CNA record |
References
- https://git.kernel.org/stable/c/1f573e17bcb7275ddd1c8f47f46ae0faf0e902a4
- https://git.kernel.org/stable/c/55c479aae99b120489a432db9c717484e523dfd6
- https://git.kernel.org/stable/c/722b3f86df80644463d29fe5451e30a617f74500
- https://git.kernel.org/stable/c/a74e893f30db64cdce0fc7a96d3baa417bcd55f5
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.