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              "versionType": "original_commit_for_fix"
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          "nodes": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bonding: fix use-after-free in bond_xmit_broadcast()\n\nbond_xmit_broadcast() reuses the original skb for the last slave\n(determined by bond_is_last_slave()) and clones it for others.\nConcurrent slave enslave/release can mutate the slave list during\nRCU-protected iteration, changing which slave is \"last\" mid-loop.\nThis causes the original skb to be double-consumed (double-freed).\n\nReplace the racy bond_is_last_slave() check with a simple index\ncomparison (i + 1 == slaves_count) against the pre-snapshot slave\ncount taken via READ_ONCE() before the loop.  This preserves the\nzero-copy optimization for the last slave while making the \"last\"\ndetermination stable against concurrent list mutations.\n\nThe UAF can trigger the following crash:\n\n==================================================================\nBUG: KASAN: slab-use-after-free in skb_clone\nRead of size 8 at addr ffff888100ef8d40 by task exploit/147\n\nCPU: 1 UID: 0 PID: 147 Comm: exploit Not tainted 7.0.0-rc3+ #4 PREEMPTLAZY\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl (lib/dump_stack.c:123)\n print_report (mm/kasan/report.c:379 mm/kasan/report.c:482)\n kasan_report (mm/kasan/report.c:597)\n skb_clone (include/linux/skbuff.h:1724 include/linux/skbuff.h:1792 include/linux/skbuff.h:3396 net/core/skbuff.c:2108)\n bond_xmit_broadcast (drivers/net/bonding/bond_main.c:5334)\n bond_start_xmit (drivers/net/bonding/bond_main.c:5567 drivers/net/bonding/bond_main.c:5593)\n dev_hard_start_xmit (include/linux/netdevice.h:5325 include/linux/netdevice.h:5334 net/core/dev.c:3871 net/core/dev.c:3887)\n __dev_queue_xmit (include/linux/netdevice.h:3601 net/core/dev.c:4838)\n ip6_finish_output2 (include/net/neighbour.h:540 include/net/neighbour.h:554 net/ipv6/ip6_output.c:136)\n ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)\n ip6_output (net/ipv6/ip6_output.c:250)\n ip6_send_skb (net/ipv6/ip6_output.c:1985)\n udp_v6_send_skb (net/ipv6/udp.c:1442)\n udpv6_sendmsg (net/ipv6/udp.c:1733)\n __sys_sendto (net/socket.c:730 net/socket.c:742 net/socket.c:2206)\n __x64_sys_sendto (net/socket.c:2209)\n do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n \u003c/TASK\u003e\n\nAllocated by task 147:\n\nFreed by task 147:\n\nThe buggy address belongs to the object at ffff888100ef8c80\n which belongs to the cache skbuff_head_cache of size 224\nThe buggy address is located 192 bytes inside of\n freed 224-byte region [ffff888100ef8c80, ffff888100ef8d60)\n\nMemory state around the buggy address:\n ffff888100ef8c00: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc\n ffff888100ef8c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n\u003effff888100ef8d00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n                                                    ^\n ffff888100ef8d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb\n ffff888100ef8e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n=================================================================="
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-04T11:50:30.554Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2de5c8eea0a9db99dae7c36f4b541b74b41d3a04"
        },
        {
          "url": "https://git.kernel.org/stable/c/a0f661918edc79d7a75e468128af8d41e2a1a83a"
        },
        {
          "url": "https://git.kernel.org/stable/c/d4cc7e4c80b1634c7b1497574a2fdb18df6c026c"
        },
        {
          "url": "https://git.kernel.org/stable/c/f5b94654a4a19891a8108d66ef166de6c028c6cd"
        },
        {
          "url": "https://git.kernel.org/stable/c/2884bf72fb8f03409e423397319205de48adca16"
        }
      ],
      "title": "net: bonding: fix use-after-free in bond_xmit_broadcast()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31419",
    "datePublished": "2026-04-13T13:40:23.279Z",
    "dateReserved": "2026-03-09T15:48:24.088Z",
    "dateUpdated": "2026-07-15T01:09:22.472Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-31419",
      "date": "2026-07-21",
      "epss": "0.00124",
      "percentile": "0.02567"
    },
    "microsoft_vex": {
      "current_release_date": "2026-07-02T14:42:42.000Z",
      "cve": "CVE-2026-31419",
      "id": "msrc_CVE-2026-31419",
      "initial_release_date": "2026-04-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "7",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "net: bonding: fix use-after-free in bond_xmit_broadcast()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-31419.json",
      "version": "9"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-31419\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-04-13T14:16:11.447\",\"lastModified\":\"2026-07-15T02:19:47.357\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: bonding: fix use-after-free in bond_xmit_broadcast()\\n\\nbond_xmit_broadcast() reuses the original skb for the last slave\\n(determined by bond_is_last_slave()) and clones it for others.\\nConcurrent slave enslave/release can mutate the slave list during\\nRCU-protected iteration, changing which slave is \\\"last\\\" mid-loop.\\nThis causes the original skb to be double-consumed (double-freed).\\n\\nReplace the racy bond_is_last_slave() check with a simple index\\ncomparison (i + 1 == slaves_count) against the pre-snapshot slave\\ncount taken via READ_ONCE() before the loop.  This preserves the\\nzero-copy optimization for the last slave while making the \\\"last\\\"\\ndetermination stable against concurrent list mutations.\\n\\nThe UAF can trigger the following crash:\\n\\n==================================================================\\nBUG: KASAN: slab-use-after-free in skb_clone\\nRead of size 8 at addr ffff888100ef8d40 by task exploit/147\\n\\nCPU: 1 UID: 0 PID: 147 Comm: exploit Not tainted 7.0.0-rc3+ #4 PREEMPTLAZY\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl (lib/dump_stack.c:123)\\n print_report (mm/kasan/report.c:379 mm/kasan/report.c:482)\\n kasan_report (mm/kasan/report.c:597)\\n skb_clone (include/linux/skbuff.h:1724 include/linux/skbuff.h:1792 include/linux/skbuff.h:3396 net/core/skbuff.c:2108)\\n bond_xmit_broadcast (drivers/net/bonding/bond_main.c:5334)\\n bond_start_xmit (drivers/net/bonding/bond_main.c:5567 drivers/net/bonding/bond_main.c:5593)\\n dev_hard_start_xmit (include/linux/netdevice.h:5325 include/linux/netdevice.h:5334 net/core/dev.c:3871 net/core/dev.c:3887)\\n __dev_queue_xmit (include/linux/netdevice.h:3601 net/core/dev.c:4838)\\n ip6_finish_output2 (include/net/neighbour.h:540 include/net/neighbour.h:554 net/ipv6/ip6_output.c:136)\\n ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)\\n ip6_output (net/ipv6/ip6_output.c:250)\\n ip6_send_skb (net/ipv6/ip6_output.c:1985)\\n udp_v6_send_skb (net/ipv6/udp.c:1442)\\n udpv6_sendmsg (net/ipv6/udp.c:1733)\\n __sys_sendto (net/socket.c:730 net/socket.c:742 net/socket.c:2206)\\n __x64_sys_sendto (net/socket.c:2209)\\n do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)\\n entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\\n \u003c/TASK\u003e\\n\\nAllocated by task 147:\\n\\nFreed by task 147:\\n\\nThe buggy address belongs to the object at ffff888100ef8c80\\n which belongs to the cache skbuff_head_cache of size 224\\nThe buggy address is located 192 bytes inside of\\n freed 224-byte region [ffff888100ef8c80, ffff888100ef8d60)\\n\\nMemory state around the buggy address:\\n ffff888100ef8c00: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc\\n ffff888100ef8c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\\n\u003effff888100ef8d00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\\n                                                    ^\\n ffff888100ef8d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb\\n ffff888100ef8e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\\n==================================================================\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/bonding/bond_main.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4e5bd03ae34652cd932ab4c91c71c511793df75c\",\"lessThan\":\"2de5c8eea0a9db99dae7c36f4b541b74b41d3a04\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4e5bd03ae34652cd932ab4c91c71c511793df75c\",\"lessThan\":\"a0f661918edc79d7a75e468128af8d41e2a1a83a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4e5bd03ae34652cd932ab4c91c71c511793df75c\",\"lessThan\":\"d4cc7e4c80b1634c7b1497574a2fdb18df6c026c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4e5bd03ae34652cd932ab4c91c71c511793df75c\",\"lessThan\":\"f5b94654a4a19891a8108d66ef166de6c028c6cd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4e5bd03ae34652cd932ab4c91c71c511793df75c\",\"lessThan\":\"2884bf72fb8f03409e423397319205de48adca16\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"20949c3816463e97c6f8fe84c0280c7e5ae83a8d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1d206181f19b00b275b258fea1418718a2f4173\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c1f1691ef84fa6d38fa5e5148eca073145e97ffa\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.94\",\"lessThan\":\"5.11\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.17\",\"lessThan\":\"5.16\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.16.3\",\"lessThan\":\"5.17\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/bonding/bond_main.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.143\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.95\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.22\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.12\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"affectedData\":[{\"vendor\":\"Red 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      "id": "CVE-2026-31419",
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      "product_status:fixed": "2416",
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      "title": "kernel: Linux kernel: Use-after-free in bonding driver leads to denial of service",
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