Bug 2461559 (CVE-2026-31542) - CVE-2026-31542 kernel: x86/platform/uv: Handle deconfigured sockets
Summary: CVE-2026-31542 kernel: x86/platform/uv: Handle deconfigured sockets
Keywords:
Status: NEW
Alias: CVE-2026-31542
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-24 15:08 UTC by OSIDB Bzimport
Modified: 2026-04-24 16:46 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-04-24 15:08:27 UTC 
In the Linux kernel, the following vulnerability has been resolved:

x86/platform/uv: Handle deconfigured sockets

When a socket is deconfigured, it's mapped to SOCK_EMPTY (0xffff). This causes
a panic while allocating UV hub info structures.

Fix this by using NUMA_NO_NODE, allowing UV hub info structures to be
allocated on valid nodes.
Comment 1 Keith Grant 2026-04-24 16:44:02 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026042423-CVE-2026-31542-ba9f@gregkh/T
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