Answer in brief
CVE-2026-93204 records a Unknown severity vulnerability in batman-adv: dat: atomically update mac addresses. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <181012b3d29c51197c235ee5871fc7512c736855 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <159360a0de831845c4500b4f8638decdcd624040 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <259db2c04586d40b82c5c3002b1e28b0698a0bb7 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <1674855a5b6eacfe35f4db3095d7055c25467274 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <66238e2a74eca5dabf85b0cd2c3c944e474dc2fd || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <a5e4d6cb4f6848b8906c1c493f99a8ccc0638515 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <f68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <e6de568d3eda3e3c01c868fabd7a9535d5ee4a73 | 181012b3d29c51197c235ee5871fc7512c736855, 159360a0de831845c4500b4f8638decdcd624040, 259db2c04586d40b82c5c3002b1e28b0698a0bb7, 1674855a5b6eacfe35f4db3095d7055c25467274, 66238e2a74eca5dabf85b0cd2c3c944e474dc2fd, a5e4d6cb4f6848b8906c1c493f99a8ccc0638515, f68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9, e6de568d3eda3e3c01c868fabd7a9535d5ee4a73 |
| Linux/Linuxgeneric | >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <159360a0de831845c4500b4f8638decdcd624040 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <259db2c04586d40b82c5c3002b1e28b0698a0bb7 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <1674855a5b6eacfe35f4db3095d7055c25467274 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <66238e2a74eca5dabf85b0cd2c3c944e474dc2fd || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <a5e4d6cb4f6848b8906c1c493f99a8ccc0638515 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <f68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9 || >=2f1dfbe185075a50dc8f0490a136377af53a1c62 <e6de568d3eda3e3c01c868fabd7a9535d5ee4a73 | 159360a0de831845c4500b4f8638decdcd624040, 259db2c04586d40b82c5c3002b1e28b0698a0bb7, 1674855a5b6eacfe35f4db3095d7055c25467274, 66238e2a74eca5dabf85b0cd2c3c944e474dc2fd, a5e4d6cb4f6848b8906c1c493f99a8ccc0638515, f68038c77a2f38c09c7e2e4f7fa1f4e246fdf2c9, e6de568d3eda3e3c01c868fabd7a9535d5ee4a73 |
| Linux/Linuxgeneric | 3.8 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.