CVE-2026-93204batman-adv: dat: atomically update mac addresses
Updated under an hour ago ()
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It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: atomically update mac addresses When a MAC address is updated in batadv_dat_entry_add(), it is done using a simple copy function. A parallel reader might only see parts of this update. In worst case, the reader is transporting the half updated MAC address over the network or is creating an ARP response using it - poisoning the ARP cache. atomic64_t can be used to store the 48 bit of a mac address. A reader will then either see the old mac address or the new one - never a mixture of both.
- CVSS
- Not yet scored
- 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 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 2f1dfbe185075a50dc8f0490a136377af53a1c62 before 181012b3d29c51197c235ee5871fc7512c736855; from 2f1dfbe185075a50dc8f0490a136377af53a1c62 before 159360a0de831845c4500b4f8638decdcd624040; from 2f1dfbe185075a50dc8f0490a136377af53a1c62 before 259db2c04586d40b82c5c3002b1e28b0698a0bb7; from 2f1dfbe185075a50dc8f0490a136377af53a1c62 before 1674855a5b6eacfe35f4db3095d7055c25467274; from 2f1dfbe185075a50dc8f0490a136377af53a1c62 before 66238e2a74eca5dabf85b0cd2c3c944e474dc2fd; from 2f1dfbe185075a50dc8f0490a136377af53a1c62 before a5e4d6cb4f6848b8906c1c493f99a8ccc0638515; from 2f1dfbe185075a50dc8f0490a136377af53a1c62 before f68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9; from 2f1dfbe185075a50dc8f0490a136377af53a1c62 before e6de568d3eda3e3c01c868fabd7a9535d5ee4a73 | CNA record |
References
- https://git.kernel.org/stable/c/181012b3d29c51197c235ee5871fc7512c736855
- https://git.kernel.org/stable/c/159360a0de831845c4500b4f8638decdcd624040
- https://git.kernel.org/stable/c/259db2c04586d40b82c5c3002b1e28b0698a0bb7
- https://git.kernel.org/stable/c/1674855a5b6eacfe35f4db3095d7055c25467274
- https://git.kernel.org/stable/c/66238e2a74eca5dabf85b0cd2c3c944e474dc2fd
- https://git.kernel.org/stable/c/a5e4d6cb4f6848b8906c1c493f99a8ccc0638515
- https://git.kernel.org/stable/c/f68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9
- https://git.kernel.org/stable/c/e6de568d3eda3e3c01c868fabd7a9535d5ee4a73
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.