CVE-2025-68191

udp_tunnel: use netdev_warn() instead of netdev_WARN()

State: Published
Severity: Not scored
Published: Dec 16, 2025
Updated: May 11, 2026
Reserved: Dec 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

udp_tunnel: use netdev_warn() instead of netdev_WARN()

netdev_WARN() uses WARN/WARN_ON to print a backtrace along with file and line information. In this case, udp_tunnel_nic_register() returning an error is just a failed operation, not a kernel bug.

udp_tunnel_nic_register() can fail due to a memory allocation failure (kzalloc() or udp_tunnel_nic_alloc()). This is a normal runtime error and not a kernel bug.

Replace netdev_WARN() with netdev_warn() accordingly.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before 087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0Affected cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before 45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4Affected cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before 7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8baAffected cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before c018a87942bf1607aeebf8dba5a210ca9a09a0fdAffected cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before 51b3033088f0420b19027e3d54cd989b6ebd987eAffected cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before 3c3b148bf8384c8a787753cf20abde1c5731f97fAffected cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before dc2f650f7e6857bf384069c1a56b2937a1ee370dAffected
LinuxLinux	5.9Affected before 5.9Not affected 5.10.247 through 5.10.Not affected 5.15.197 through 5.15.Not affected 6.1.159 through 6.1.Not affected 6.6.117 through 6.6.Not affected 6.12.58 through 6.12.Not affected 6.17.8 through 6.17.Not affected 6.18 and laterNot affected

Product

Versions

LinuxLinux

cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before 087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0Affected
cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before 45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4Affected
cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before 7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8baAffected
cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before c018a87942bf1607aeebf8dba5a210ca9a09a0fdAffected
cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before 51b3033088f0420b19027e3d54cd989b6ebd987eAffected
cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before 3c3b148bf8384c8a787753cf20abde1c5731f97fAffected
cc4e3835eff474aa274d6e1d18f69d9d296d3b76 to before dc2f650f7e6857bf384069c1a56b2937a1ee370dAffected

LinuxLinux

5.9Affected
before 5.9Not affected
5.10.247 through 5.10.*Not affected
5.15.197 through 5.15.*Not affected
6.1.159 through 6.1.*Not affected
6.6.117 through 6.6.*Not affected
6.12.58 through 6.12.*Not affected
6.17.8 through 6.17.*Not affected
6.18 and laterNot affected

References

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