{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-54114","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-24T13:02:52.519Z","datePublished":"2025-12-24T13:06:36.214Z","dateUpdated":"2026-05-11T19:55:44.834Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:55:44.834Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()\n\nAs the call trace shows, skb_panic was caused by wrong skb->mac_header\nin nsh_gso_segment():\n\ninvalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 3 PID: 2737 Comm: syz Not tainted 6.3.0-next-20230505 #1\nRIP: 0010:skb_panic+0xda/0xe0\ncall Trace:\n skb_push+0x91/0xa0\n nsh_gso_segment+0x4f3/0x570\n skb_mac_gso_segment+0x19e/0x270\n __skb_gso_segment+0x1e8/0x3c0\n validate_xmit_skb+0x452/0x890\n validate_xmit_skb_list+0x99/0xd0\n sch_direct_xmit+0x294/0x7c0\n __dev_queue_xmit+0x16f0/0x1d70\n packet_xmit+0x185/0x210\n packet_snd+0xc15/0x1170\n packet_sendmsg+0x7b/0xa0\n sock_sendmsg+0x14f/0x160\n\nThe root cause is:\nnsh_gso_segment() use skb->network_header - nhoff to reset mac_header\nin skb_gso_error_unwind() if inner-layer protocol gso fails.\nHowever, skb->network_header may be reset by inner-layer protocol\ngso function e.g. mpls_gso_segment. skb->mac_header reset by the\ninaccurate network_header will be larger than skb headroom.\n\nnsh_gso_segment\n    nhoff = skb->network_header - skb->mac_header;\n    __skb_pull(skb,nsh_len)\n    skb_mac_gso_segment\n        mpls_gso_segment\n            skb_reset_network_header(skb);//skb->network_header+=nsh_len\n            return -EINVAL;\n    skb_gso_error_unwind\n        skb_push(skb, nsh_len);\n        skb->mac_header = skb->network_header - nhoff;\n        // skb->mac_header > skb->headroom, cause skb_push panic\n\nUse correct mac_offset to restore mac_header and get rid of nhoff."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nsh/nsh.c"],"versions":[{"version":"c411ed854584a71b0e86ac3019b60e4789d88086","lessThan":"2f88c8d38ecf5ed0273f99a067246899ba499eb2","status":"affected","versionType":"git"},{"version":"c411ed854584a71b0e86ac3019b60e4789d88086","lessThan":"d2309e0cb27b6871b273fbc1725e93be62570d86","status":"affected","versionType":"git"},{"version":"c411ed854584a71b0e86ac3019b60e4789d88086","lessThan":"435855b0831b351cb72cb38369ee33122ce9574c","status":"affected","versionType":"git"},{"version":"c411ed854584a71b0e86ac3019b60e4789d88086","lessThan":"02b20e0bc0c2628539e9e518dc342787c3332de2","status":"affected","versionType":"git"},{"version":"c411ed854584a71b0e86ac3019b60e4789d88086","lessThan":"cdd8160dcda1fed2028a5f96575a84afc23aff7d","status":"affected","versionType":"git"},{"version":"c411ed854584a71b0e86ac3019b60e4789d88086","lessThan":"6fbedf987b6b8ed54a50e2205d998eb2c8be72f9","status":"affected","versionType":"git"},{"version":"c411ed854584a71b0e86ac3019b60e4789d88086","lessThan":"cb38e62922aa3991793344b5a5870e7291c74a44","status":"affected","versionType":"git"},{"version":"c411ed854584a71b0e86ac3019b60e4789d88086","lessThan":"c83b49383b595be50647f0c764a48c78b5f3c4f8","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/nsh/nsh.c"],"versions":[{"version":"4.14","status":"affected"},{"version":"0","lessThan":"4.14","status":"unaffected","versionType":"semver"},{"version":"4.14.316","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.284","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.244","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.181","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.113","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.30","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.3.4","lessThanOrEqual":"6.3.*","status":"unaffected","versionType":"semver"},{"version":"6.4","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":"4.14","versionEndExcluding":"4.14.316"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"4.19.284"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.4.244"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.10.181"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"5.15.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.1.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.3.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2f88c8d38ecf5ed0273f99a067246899ba499eb2"},{"url":"https://git.kernel.org/stable/c/d2309e0cb27b6871b273fbc1725e93be62570d86"},{"url":"https://git.kernel.org/stable/c/435855b0831b351cb72cb38369ee33122ce9574c"},{"url":"https://git.kernel.org/stable/c/02b20e0bc0c2628539e9e518dc342787c3332de2"},{"url":"https://git.kernel.org/stable/c/cdd8160dcda1fed2028a5f96575a84afc23aff7d"},{"url":"https://git.kernel.org/stable/c/6fbedf987b6b8ed54a50e2205d998eb2c8be72f9"},{"url":"https://git.kernel.org/stable/c/cb38e62922aa3991793344b5a5870e7291c74a44"},{"url":"https://git.kernel.org/stable/c/c83b49383b595be50647f0c764a48c78b5f3c4f8"}],"title":"net: nsh: Use correct mac_offset to unwind gso skb in nsh_gso_segment()","x_generator":{"engine":"bippy-1.2.0"}}}}