CVE-2026-46238
batman-adv: stop caching unowned originator pointers in BAT IV
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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]
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.38
References 8
git.kernel.org
- stable/c/86b2b58d7c228d850c8c78e4144e6123e8ed2718
- stable/c/384e3050a42be9085d50507b4d5f8266a588d742
- stable/c/8c16c68fdbb69778f8d04f650340c3f4d1518f8e
- stable/c/aafcbaf1159ea224528ca4075d0ba8c10ef374af
- stable/c/6e20700f8c524ac379ba8274ff5d453023b7c006
- stable/c/09dc0d1a12222ffca6481916eab3cfea477b9620
- stable/c/67bceeb22207f1f5a402973a3a0809e5f2698f38
- stable/c/f03e8583532941b07761c5429de7d50766fa3110