{"id":"CVE-2025-68191","state":"PUBLISHED","title":"udp_tunnel: use netdev_warn() instead of netdev_WARN()","description":"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.","publishedAt":"2025-12-16T13:43:13.146Z","updatedAt":"2026-05-11T21:48:25.272Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8ba","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"c018a87942bf1607aeebf8dba5a210ca9a09a0fd","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"51b3033088f0420b19027e3d54cd989b6ebd987e","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"3c3b148bf8384c8a787753cf20abde1c5731f97f","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"dc2f650f7e6857bf384069c1a56b2937a1ee370d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/udp_tunnel_nic.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.9","versionType":"semver"},{"version":"5.10.247","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.197","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.159","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.117","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.58","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.8","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/udp_tunnel_nic.c"]}],"references":["https://git.kernel.org/stable/c/087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0","https://git.kernel.org/stable/c/45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4","https://git.kernel.org/stable/c/7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8ba","https://git.kernel.org/stable/c/c018a87942bf1607aeebf8dba5a210ca9a09a0fd","https://git.kernel.org/stable/c/51b3033088f0420b19027e3d54cd989b6ebd987e","https://git.kernel.org/stable/c/3c3b148bf8384c8a787753cf20abde1c5731f97f","https://git.kernel.org/stable/c/dc2f650f7e6857bf384069c1a56b2937a1ee370d"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68191.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68191","state":"PUBLISHED","datePublished":"2025-12-16T13:43:13.146Z","dateUpdated":"2026-05-11T21:48:25.272Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-16T13:41:40.253Z"},"containers":{"cna":{"title":"udp_tunnel: use netdev_warn() instead of netdev_WARN()","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8ba","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"c018a87942bf1607aeebf8dba5a210ca9a09a0fd","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"51b3033088f0420b19027e3d54cd989b6ebd987e","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"3c3b148bf8384c8a787753cf20abde1c5731f97f","versionType":"git"},{"version":"cc4e3835eff474aa274d6e1d18f69d9d296d3b76","status":"affected","lessThan":"dc2f650f7e6857bf384069c1a56b2937a1ee370d","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/udp_tunnel_nic.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.9","versionType":"semver"},{"version":"5.10.247","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.197","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.159","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.117","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.58","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.8","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/udp_tunnel_nic.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:48:25.272Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}