OESA-2026-2494 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: udp: Fix wildcard bind conflict check when using hash2 When binding a udpsock to a local address and port, UDP uses two hashes udptable-hash and udptable-hash2 f...

udp: Fix wildcard bind conflict check when using hash2

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SUSE CVE-2026-31503

In the Linux kernel, the following vulnerability has been resolved: udp: Fix wildcard bind conflict check when using hash2 When binding a udpsock to a local address and port, UDP uses two hashes udptable-hash and udptable-hash2 for collision detection. The current code switches to "hash2" when...

EUVD-2026-24880

In the Linux kernel, the following vulnerability has been resolved: udp: Fix wildcard bind conflict check when using hash2 When binding a udpsock to a local address and port, UDP uses two hashes udptable-hash and udptable-hash2 for collision detection. The current code switches to "hash2" when...

CVE-2026-31503

In the Linux kernel, the following vulnerability has been resolved: udp: Fix wildcard bind conflict check when using hash2 When binding a udpsock to a local address and port, UDP uses two hashes udptable-hash and udptable-hash2 for collision detection. The current code switches to "hash2" when...

CVE-2026-31503

CVE-2026-31503 concerns a Linux kernel UDP hash2-based wildcard-bind conflict check that can miss an in-use port when many sockets bind to the same port. The issue arises because UDP uses two hashes (hash and hash2) for collision detection and switches to hash2 only when hslot->count > 10, ...

CVE-2026-31503 udp: Fix wildcard bind conflict check when using hash2

In the Linux kernel, the following vulnerability has been resolved: udp: Fix wildcard bind conflict check when using hash2 When binding a udpsock to a local address and port, UDP uses two hashes udptable-hash and udptable-hash2 for collision detection. The current code switches to "hash2" when...

PT-2026-34408

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A conflict check failure occurs when binding a udp sock to a local address and port. The system utilizes two hashes, udptable-hash and udptable-hash2, for collision detection. When the...

Linux Distros Unpatched Vulnerability : CVE-2026-31503

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - udp: Fix wildcard bind conflict check when using hash2 When binding a udpsock to a local address and port, UDP uses two hashes udptable-hash and udptable-hash2...

CVE-2026-23331

In the Linux kernel, the following vulnerability has been resolved: udp: Unhash auto-bound connected sk from 4-tuple hash table when disconnected. Let's say we bind an UDP socket to the wildcard address with a non-zero port, connect it to an address, and disconnect it from the address. bind sets...

SUSE CVE-2007-2480

The udplibgetport function in net/ipv4/udp.c in Linux kernel 2.6.21 and earlier does not prevent a bind to a port with a local address when there is already a bind to that port with a wildcard local address, which might allow local users to intercept local traffic for daemons or other application...