{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-47707",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-47707"
  ],
  "published": "2024-10-21T12:02:02Z",
  "summary": "ipv6: avoid possible NULL deref in rt6_uncached_list_flush_dev()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: avoid possible NULL deref in rt6_uncached_list_flush_dev()\n\nBlamed commit accidentally removed a check for rt->rt6i_idev being NULL,\nas spotted by syzbot:\n\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nCPU: 1 UID: 0 PID: 10998 Comm: syz-executor Not tainted 6.11.0-rc6-syzkaller-00208-g625403177711 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024\n RIP: 0010:rt6_uncached_list_flush_dev net/ipv6/route.c:177 [inline]\n RIP: 0010:rt6_disable_ip+0x33e/0x7e0 net/ipv6/route.c:4914\nCode: 41 80 3c 04 00 74 0a e8 90 d0 9b f7 48 8b 7c 24 08 48 8b 07 48 89 44 24 10 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 64 d0 9b f7 48 8b 44 24 18 49 39 06\nRSP: 0018:ffffc900047374e0 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: 1ffff1100fdf8f33 RCX: dffffc0000000000\nRDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88807efc78c0\nRBP: ffffc900047375d0 R08: 0000000000000003 R09: fffff520008e6e8c\nR10: dffffc0000000000 R11: fffff520008e6e8c R12: 1ffff1100fdf8f18\nR13: ffff88807efc7998 R14: 0000000000000000 R15: ffff88807efc7930\nFS:  0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000020002a80 CR3: 0000000022f62000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n <TASK>\n  addrconf_ifdown+0x15d/0x1bd0 net/ipv6/addrconf.c:3856\n addrconf_notify+0x3cb/0x1020\n  notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93\n  call_netdevice_notifiers_extack net/core/dev.c:2032 [inline]\n  call_netdevice_notifiers net/core/dev.c:2046 [inline]\n  unregister_netdevice_many_notify+0xd81/0x1c40 net/core/dev.c:11352\n  unregister_netdevice_many net/core/dev.c:11414 [inline]\n  unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11289\n  unregister_netdevice include/linux/netdevice.h:3129 [inline]\n  __tun_detach+0x6b9/0x1600 drivers/net/tun.c:685\n  tun_detach drivers/net/tun.c:701 [inline]\n  tun_chr_close+0x108/0x1b0 drivers/net/tun.c:3510\n  __fput+0x24a/0x8a0 fs/file_table.c:422\n  task_work_run+0x24f/0x310 kernel/task_work.c:228\n  exit_task_work include/linux/task_work.h:40 [inline]\n  do_exit+0xa2f/0x27f0 kernel/exit.c:882\n  do_group_exit+0x207/0x2c0 kernel/exit.c:1031\n  __do_sys_exit_group kernel/exit.c:1042 [inline]\n  __se_sys_exit_group kernel/exit.c:1040 [inline]\n  __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1040\n  x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232\n  do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n  do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f1acc77def9\nCode: Unable to access opcode bytes at 0x7f1acc77decf.\nRSP: 002b:00007ffeb26fa738 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1acc77def9\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043\nRBP: 00007f1acc7dd508 R08: 00007ffeb26f84d7 R09: 0000000000000003\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001\nR13: 0000000000000003 R14: 00000000ffffffff R15: 00007ffeb26fa8e0\n </TASK>\nModules linked in:\n---[ end trace 0000000000000000 ]---\n RIP: 0010:rt6_uncached_list_flush_dev net/ipv6/route.c:177 [inline]\n RIP: 0010:rt6_disable_ip+0x33e/0x7e0 net/ipv6/route.c:4914\nCode: 41 80 3c 04 00 74 0a e8 90 d0 9b f7 48 8b 7c 24 08 48 8b 07 48 89 44 24 10 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 64 d0 9b f7 48 8b 44 24 18 49 39 06\nRSP: 0018:ffffc900047374e0 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: 1ffff1100fdf8f33 RCX: dffffc0000000000\nRDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88807efc78c0\nR\n---truncated---",
  "affected": [
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        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
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        "1:6.6.51-1+rpt2",
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  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-47707"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a61a174280dad99f25a7dee920310885daf2552b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8a8b83016f06805775db099c8377024b6fa5b975"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e43dd28405e6b9935279996725ee11e6306547a5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f2bd9635543ca41533b870f420872819f8331823"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0ceb2f2b5c813f932d6e60d3feec5e7e713da783"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9a0ddc73be37d19dff1ba08290af34e707d18e50"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/08409e401622e2896b4313be9f781bde8a2a6a53"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/04ccecfa959d3b9ae7348780d8e379c6486176ac"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
  }
}