{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"CRITICAL" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"In the Linux kernel, the following vulnerability has been resolved:\n\nxdp: fix zero-copy frame layout\n\nxdp_convert_zc_to_xdp_frame() clones an XSK packet into an order-0 page\nand advertises PAGE_SIZE as its frame size. It allows the copied frame\nto occupy the page tail needed by skb_shared_info and records zero\nheadroom even when metadata separates the frame header from packet data.\nAn AF_XDP zero-copy packet redirected through cpumap can therefore make\nthe skb overlap skb_shared_info or place it beyond the allocated page.\n\nLimit the copied layout to SKB_WITH_OVERHEAD(PAGE_SIZE) and include the\nmetadata length in frame headroom. Redirect callers already handle a\nNULL conversion result.\n\nBUG: KASAN: slab-out-of-bounds in skb_gro_receive\nWrite of size 4 at addr ffff88800cf37004 by task cpumap/1/map:1/146\nCall Trace:\n skb_gro_receive (net/core/gro.c:174)\n udp_gro_receive (net/ipv4/udp_offload.c:812)\n inet_gro_receive (net/ipv4/af_inet.c:1539)\n dev_gro_receive (net/core/gro.c:515)\n gro_receive_skb (net/core/gro.c:633)\n cpu_map_kthread_run (kernel/bpf/cpumap.c:395)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:164)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:255)\nKernel panic - not syncing: KASAN: panic_on_warn set ...", "category":"general", "title":"Synopsis" } ], "publisher":null, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81002" }, { "summary":"CVE-2026-81002 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2026/csaf-openeuler-cve-2026-81002.json" }, { "summary":"openEuler-SA-2026-4591", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4591" }, { "summary":"CVE-2026-81002", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-81002&packageName=kernel" } ], "title":"openEuler cve CVE-2026-81002", "tracking":{ "initial_release_date":"2026-10-30T11:21:29+08:00", "revision_history":[ { "date":"2026-10-30T11:21:29+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2026-10-30T11:21:29+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2026-10-30T11:21:29+08:00", "id":"CVE-2026-81002", "version":"1.0.0", "status":"interim" } }, "product_tree":{ "branches":[ { "name":"openEuler", "category":"vendor", "branches":[ { "name":"openEuler", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:22.03-LTS-SP4" }, "product_id":"openEuler-22.03-LTS-SP4", 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It allows the copied frame\nto occupy the page tail needed by skb_shared_info and records zero\nheadroom even when metadata separates the frame header from packet data.\nAn AF_XDP zero-copy packet redirected through cpumap can therefore make\nthe skb overlap skb_shared_info or place it beyond the allocated page.\n\nLimit the copied layout to SKB_WITH_OVERHEAD(PAGE_SIZE) and include the\nmetadata length in frame headroom. Redirect callers already handle a\nNULL conversion result.\n\nBUG: KASAN: slab-out-of-bounds in skb_gro_receive\nWrite of size 4 at addr ffff88800cf37004 by task cpumap/1/map:1/146\nCall Trace:\n skb_gro_receive (net/core/gro.c:174)\n udp_gro_receive (net/ipv4/udp_offload.c:812)\n inet_gro_receive (net/ipv4/af_inet.c:1539)\n dev_gro_receive (net/core/gro.c:515)\n gro_receive_skb (net/core/gro.c:633)\n cpu_map_kthread_run (kernel/bpf/cpumap.c:395)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:164)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:255)\nKernel panic - not syncing: KASAN: panic_on_warn set ...", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-22.03-LTS-SP4:kernel-5.10.0-339.0.0.240.oe2203sp4.src", "openEuler-22.03-LTS-SP4:bpftool-5.10.0-339.0.0.240.oe2203sp4.aarch64", "openEuler-22.03-LTS-SP4:bpftool-debuginfo-5.10.0-339.0.0.240.oe2203sp4.aarch64", 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"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4591" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"CRITICAL", "baseScore":9.8, "vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version":"3.1" }, "products":[ "openEuler-22.03-LTS-SP4:kernel-5.10.0-339.0.0.240.oe2203sp4.src", "openEuler-22.03-LTS-SP4:bpftool-5.10.0-339.0.0.240.oe2203sp4.aarch64", "openEuler-22.03-LTS-SP4:bpftool-debuginfo-5.10.0-339.0.0.240.oe2203sp4.aarch64", "openEuler-22.03-LTS-SP4:kernel-5.10.0-339.0.0.240.oe2203sp4.aarch64", "openEuler-22.03-LTS-SP4:kernel-debuginfo-5.10.0-339.0.0.240.oe2203sp4.aarch64", "openEuler-22.03-LTS-SP4:kernel-debugsource-5.10.0-339.0.0.240.oe2203sp4.aarch64", "openEuler-22.03-LTS-SP4:kernel-devel-5.10.0-339.0.0.240.oe2203sp4.aarch64", "openEuler-22.03-LTS-SP4:kernel-headers-5.10.0-339.0.0.240.oe2203sp4.aarch64", "openEuler-22.03-LTS-SP4:kernel-source-5.10.0-339.0.0.240.oe2203sp4.aarch64", 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