Bug 2536795 (CVE-2026-90105) - CVE-2026-90105 kernel: vxlan: fix reading neigh ha
Summary: CVE-2026-90105 kernel: vxlan: fix reading neigh ha
Keywords:
Status: NEW
Alias: CVE-2026-90105
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-17 19:34 UTC by OSIDB Bzimport
Modified: 2026-10-13 12:39 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-17 19:34:06 UTC 
In the Linux kernel, the following vulnerability has been resolved:

vxlan: fix reading neigh ha

Currently arp/neigh_reduce read neigh ha directly which can lead to
partial reads while the neigh is being updated. Use neigh_ha_snapshot to
take a stable snapshot of the address similar to route_shortcircuit which
already does the right thing.
Comment 1 Keith Grant 2026-09-22 22:09:21 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90105.mbox
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