CVE-2026-46238
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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]
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/09dc0d1a12222ffca6481916eab3cfea477b9620Patch
- https://git.kernel.org/stable/c/384e3050a42be9085d50507b4d5f8266a588d742Patch
- https://git.kernel.org/stable/c/67bceeb22207f1f5a402973a3a0809e5f2698f38Patch
- https://git.kernel.org/stable/c/6e20700f8c524ac379ba8274ff5d453023b7c006Patch
- https://git.kernel.org/stable/c/86b2b58d7c228d850c8c78e4144e6123e8ed2718Patch
- https://git.kernel.org/stable/c/8c16c68fdbb69778f8d04f650340c3f4d1518f8ePatch
- https://git.kernel.org/stable/c/aafcbaf1159ea224528ca4075d0ba8c10ef374afPatch
- https://git.kernel.org/stable/c/f03e8583532941b07761c5429de7d50766fa3110Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.