{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68191","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-16T13:41:40.253Z","datePublished":"2025-12-16T13:43:13.146Z","dateUpdated":"2026-05-11T21:48:25.272Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:48:25.272Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nudp_tunnel: use netdev_warn() instead of netdev_WARN()\n\nnetdev_WARN() uses WARN/WARN_ON to print a backtrace along with\nfile and line information. In this case, udp_tunnel_nic_register()\nreturning an error is just a failed operation, not a kernel bug.\n\nudp_tunnel_nic_register() can fail due to a memory allocation\nfailure (kzalloc() or udp_tunnel_nic_alloc()).\nThis is a normal runtime error and not a kernel bug.\n\nReplace netdev_WARN() with netdev_warn() accordingly."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/udp_tunnel_nic.c"],"versions":[{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","lessThan":"087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0","status":"affected","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","lessThan":"45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4","status":"affected","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","lessThan":"7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8ba","status":"affected","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","lessThan":"c018a87942bf1607aeebf8dba5a210ca9a09a0fd","status":"affected","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","lessThan":"51b3033088f0420b19027e3d54cd989b6ebd987e","status":"affected","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","lessThan":"3c3b148bf8384c8a787753cf20abde1c5731f97f","status":"affected","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","lessThan":"dc2f650f7e6857bf384069c1a56b2937a1ee370d","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/udp_tunnel_nic.c"],"versions":[{"version":"5.9","status":"affected"},{"version":"0","lessThan":"5.9","status":"unaffected","versionType":"semver"},{"version":"5.10.247","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.197","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.159","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.117","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.58","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.17.8","lessThanOrEqual":"6.17.*","status":"unaffected","versionType":"semver"},{"version":"6.18","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.10.247"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.15.197"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.1.159"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.6.117"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.12.58"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.17.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.18"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0"},{"url":"https://git.kernel.org/stable/c/45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4"},{"url":"https://git.kernel.org/stable/c/7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8ba"},{"url":"https://git.kernel.org/stable/c/c018a87942bf1607aeebf8dba5a210ca9a09a0fd"},{"url":"https://git.kernel.org/stable/c/51b3033088f0420b19027e3d54cd989b6ebd987e"},{"url":"https://git.kernel.org/stable/c/3c3b148bf8384c8a787753cf20abde1c5731f97f"},{"url":"https://git.kernel.org/stable/c/dc2f650f7e6857bf384069c1a56b2937a1ee370d"}],"title":"udp_tunnel: use netdev_warn() instead of netdev_WARN()","x_generator":{"engine":"bippy-1.2.0"}}}}