{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"HIGH" }, "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\nipv6: ensure sane device mtu in tunnels\n\nAnother syzbot report [1] with no reproducer hints\nat a bug in ip6_gre tunnel (dev:ip6gretap0)\n\nSince ipv6 mcast code makes sure to read dev->mtu once\nand applies a sanity check on it (see commit b9b312a7a451\n\"ipv6: mcast: better catch silly mtu values\"), a remaining\npossibility is that a layer is able to set dev->mtu to\nan underflowed value (high order bit set).\n\nThis could happen indeed in ip6gre_tnl_link_config_route(),\nip6_tnl_link_config() and ipip6_tunnel_bind_dev()\n\nMake sure to sanitize mtu value in a local variable before\nit is written once on dev->mtu, as lockless readers could\ncatch wrong temporary value.\n\n[1]\nskbuff: skb_over_panic: text:ffff80000b7a2f38 len:40 put:40 head:ffff000149dcf200 data:ffff000149dcf2b0 tail:0xd8 end:0xc0 dev:ip6gretap0\n------------[ cut here ]------------\nkernel BUG at net/core/skbuff.c:120\nInternal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP\nModules linked in:\nCPU: 1 PID: 10241 Comm: kworker/1:1 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022\nWorkqueue: mld mld_ifc_work\npstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : skb_panic+0x4c/0x50 net/core/skbuff.c:116\nlr : skb_panic+0x4c/0x50 net/core/skbuff.c:116\nsp : ffff800020dd3b60\nx29: ffff800020dd3b70 x28: 0000000000000000 x27: ffff00010df2a800\nx26: 00000000000000c0 x25: 00000000000000b0 x24: ffff000149dcf200\nx23: 00000000000000c0 x22: 00000000000000d8 x21: ffff80000b7a2f38\nx20: ffff00014c2f7800 x19: 0000000000000028 x18: 00000000000001a9\nx17: 0000000000000000 x16: ffff80000db49158 x15: ffff000113bf1a80\nx14: 0000000000000000 x13: 00000000ffffffff x12: ffff000113bf1a80\nx11: ff808000081c0d5c x10: 0000000000000000 x9 : 73f125dc5c63ba00\nx8 : 73f125dc5c63ba00 x7 : ffff800008161d1c x6 : 0000000000000000\nx5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000\nx2 : ffff0001fefddcd0 x1 : 0000000100000000 x0 : 0000000000000089\nCall trace:\nskb_panic+0x4c/0x50 net/core/skbuff.c:116\nskb_over_panic net/core/skbuff.c:125 [inline]\nskb_put+0xd4/0xdc net/core/skbuff.c:2049\nip6_mc_hdr net/ipv6/mcast.c:1714 [inline]\nmld_newpack+0x14c/0x270 net/ipv6/mcast.c:1765\nadd_grhead net/ipv6/mcast.c:1851 [inline]\nadd_grec+0xa20/0xae0 net/ipv6/mcast.c:1989\nmld_send_cr+0x438/0x5a8 net/ipv6/mcast.c:2115\nmld_ifc_work+0x38/0x290 net/ipv6/mcast.c:2653\nprocess_one_work+0x2d8/0x504 kernel/workqueue.c:2289\nworker_thread+0x340/0x610 kernel/workqueue.c:2436\nkthread+0x12c/0x158 kernel/kthread.c:376\nret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860\nCode: 91011400 aa0803e1 a90027ea 94373093 (d4210000)", "category":"general", "title":"Synopsis" } ], "publisher":null, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50816" }, { "summary":"CVE-2022-50816 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2022/csaf-openeuler-cve-2022-50816.json" }, { "summary":"openEuler-SA-2026-1276", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1276" }, { "summary":"CVE-2022-50816", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2022-50816&packageName=kernel" } ], "title":"openEuler cve CVE-2022-50816", "tracking":{ "initial_release_date":"2026-02-03T16:29:56+08:00", "revision_history":[ { "date":"2026-02-03T16:29:56+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2026-02-03T16:29:56+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2026-02-03T16:29:56+08:00", "id":"CVE-2022-50816", "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:20.03-LTS-SP4" }, "product_id":"openEuler-20.03-LTS-SP4", "name":"openEuler-20.03-LTS-SP4" }, "name":"openEuler-20.03-LTS-SP4", "category":"product_version" } ], "category":"product_name" }, { "name":"aarch64", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4" }, "product_id":"bpftool-4.19.90-2601.5.0.0360.oe2003sp4.aarch64.rpm", "name":"bpftool-4.19.90-2601.5.0.0360.oe2003sp4.aarch64.rpm" }, "name":"bpftool-4.19.90-2601.5.0.0360.oe2003sp4.aarch64.rpm", "category":"product_version" }, { "product":{ "product_identification_helper":{ 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readers could\ncatch wrong temporary value.\n\n[1]\nskbuff: skb_over_panic: text:ffff80000b7a2f38 len:40 put:40 head:ffff000149dcf200 data:ffff000149dcf2b0 tail:0xd8 end:0xc0 dev:ip6gretap0\n------------[ cut here ]------------\nkernel BUG at net/core/skbuff.c:120\nInternal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP\nModules linked in:\nCPU: 1 PID: 10241 Comm: kworker/1:1 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022\nWorkqueue: mld mld_ifc_work\npstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : skb_panic+0x4c/0x50 net/core/skbuff.c:116\nlr : skb_panic+0x4c/0x50 net/core/skbuff.c:116\nsp : ffff800020dd3b60\nx29: ffff800020dd3b70 x28: 0000000000000000 x27: ffff00010df2a800\nx26: 00000000000000c0 x25: 00000000000000b0 x24: ffff000149dcf200\nx23: 00000000000000c0 x22: 00000000000000d8 x21: ffff80000b7a2f38\nx20: ffff00014c2f7800 x19: 0000000000000028 x18: 00000000000001a9\nx17: 0000000000000000 x16: ffff80000db49158 x15: ffff000113bf1a80\nx14: 0000000000000000 x13: 00000000ffffffff x12: ffff000113bf1a80\nx11: ff808000081c0d5c x10: 0000000000000000 x9 : 73f125dc5c63ba00\nx8 : 73f125dc5c63ba00 x7 : ffff800008161d1c x6 : 0000000000000000\nx5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000\nx2 : ffff0001fefddcd0 x1 : 0000000100000000 x0 : 0000000000000089\nCall trace:\nskb_panic+0x4c/0x50 net/core/skbuff.c:116\nskb_over_panic net/core/skbuff.c:125 [inline]\nskb_put+0xd4/0xdc net/core/skbuff.c:2049\nip6_mc_hdr net/ipv6/mcast.c:1714 [inline]\nmld_newpack+0x14c/0x270 net/ipv6/mcast.c:1765\nadd_grhead net/ipv6/mcast.c:1851 [inline]\nadd_grec+0xa20/0xae0 net/ipv6/mcast.c:1989\nmld_send_cr+0x438/0x5a8 net/ipv6/mcast.c:2115\nmld_ifc_work+0x38/0x290 net/ipv6/mcast.c:2653\nprocess_one_work+0x2d8/0x504 kernel/workqueue.c:2289\nworker_thread+0x340/0x610 kernel/workqueue.c:2436\nkthread+0x12c/0x158 kernel/kthread.c:376\nret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860\nCode: 91011400 aa0803e1 a90027ea 94373093 (d4210000)", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-20.03-LTS-SP4:bpftool-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:bpftool-debuginfo-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debuginfo-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debugsource-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-devel-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-source-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-debuginfo-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", 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"openEuler-20.03-LTS-SP4:kernel-tools-debuginfo-4.19.90-2601.5.0.0360.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:kernel-tools-devel-4.19.90-2601.5.0.0360.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:perf-4.19.90-2601.5.0.0360.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:perf-debuginfo-4.19.90-2601.5.0.0360.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:python2-perf-4.19.90-2601.5.0.0360.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:python2-perf-debuginfo-4.19.90-2601.5.0.0360.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:python3-perf-4.19.90-2601.5.0.0360.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:python3-perf-debuginfo-4.19.90-2601.5.0.0360.oe2003sp4.x86_64", "openEuler-20.03-LTS-SP4:kernel-4.19.90-2601.5.0.0360.oe2003sp4.src" ], "details":"kernel security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1276" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"MEDIUM", "baseScore":4.7, "vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version":"3.1" }, "products":[ "openEuler-20.03-LTS-SP4:bpftool-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:bpftool-debuginfo-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debuginfo-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-debugsource-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-devel-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-source-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-debuginfo-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:kernel-tools-devel-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", "openEuler-20.03-LTS-SP4:perf-4.19.90-2601.5.0.0360.oe2003sp4.aarch64", 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