{"id":"CVE-2026-53091","revision":"6090a45303884c479f9ad987846733a2","records":[{"revision":"6090a45303884c479f9ad987846733a2","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-53091","aliases":[],"title":"net: pull headers in qdisc_pkt_len_segs_init()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: pull headers in qdisc_pkt_len_segs_init()\n\nMost ndo_start_xmit() methods expects headers of gso packets\nto be already in skb->head.\n\nnet/core/tso.c users are particularly at risk, because tso_build_hdr()\ndoes a memcpy(hdr, skb->data, hdr_len);\n\nqdisc_pkt_len_segs_init() already does a dissection of gso packets.\n\nUse pskb_may_pull() instead of skb_header_pointer() to make\nsure drivers do not have to reimplement this.\n\nSome malicious packets could be fed, detect them so that we can\ndrop them sooner with a new SKB_DROP_REASON_SKB_BAD_GSO drop_reason.","state":0,"publishedAt":"2026-06-24T16:30:30.29+00:00","modifiedAt":"2026-10-21T12:41:56.505+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"include/net/dropreason-core.h\",\n                        \"net/core/dev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e876f208af18b074f800656e4d1b99da75b2135f\",\n                            \"lessThan\": \"5895cfc76924a629c6eaa5e5f049de642860045f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e876f208af18b074f800656e4d1b99da75b2135f\",\n                            \"lessThan\": \"7564dc804d8289d2e5c6edb8173754051b71bff4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e876f208af18b074f800656e4d1b99da75b2135f\",\n                            \"lessThan\": \"9d4f5c68f5ad4ab425f3ce1500c97c9f9743999a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e876f208af18b074f800656e4d1b99da75b2135f\",\n                            \"lessThan\": \"7fb4c19670110f052c04e1ec1d2b953b9f4f57e4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"include/net/dropreason-core.h\",\n                        \"net/core/dev.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.10\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H","score":8.4,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/5895cfc76924a629c6eaa5e5f049de642860045f","https://git.kernel.org/stable/c/7564dc804d8289d2e5c6edb8173754051b71bff4","https://git.kernel.org/stable/c/9d4f5c68f5ad4ab425f3ce1500c97c9f9743999a","https://git.kernel.org/stable/c/7fb4c19670110f052c04e1ec1d2b953b9f4f57e4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53091","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-53091","identifiers":["CVE-2026-53091"]},"retained":false,"historicalAffected":[]}],"coverage":[]}