PT-2026-44361 · Linux · Linux

Published 2026-05-28 · Updated 2026-05-28 · CVE-2026-46238

NVD

In the Linux kernel, the following vulnerability has been resolved:

batman-adv: stop caching unowned originator pointers in BAT IV

BAT IV keeps the last-hop neighbor address in each neigh node, but some paths also cache an originator pointer derived from a temporary lookup. That pointer is not owned by the neigh node and may no longer refer to a live originator entry after purge handling runs.

Stop storing the auxiliary originator pointer in the BAT IV neighbor state. When BAT IV needs the neighbor originator data, resolve it from the stored neighbor address and drop the reference again after use.

[sven: avoid bonding logic for outgoing OGM]

Related Identifiers

CVE-2026-46238

Affected Products

Linux

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-46238 · Security Note
• https://git.kernel.org/stable/c/09dc0d1a12222ffca6481916eab3cfea477b9620 · Note
• https://git.kernel.org/stable/c/f03e8583532941b07761c5429de7d50766fa3110 · Note
• https://git.kernel.org/stable/c/67bceeb22207f1f5a402973a3a0809e5f2698f38 · Note
• https://git.kernel.org/stable/c/6e20700f8c524ac379ba8274ff5d453023b7c006 · Note
• https://git.kernel.org/stable/c/aafcbaf1159ea224528ca4075d0ba8c10ef374af · Note