CVE-2023-53147 (GCVE-0-2023-53147)
Vulnerability from cvelistv5
Published
2025-09-15 14:03
Modified
2025-09-15 14:03
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: xfrm: add NULL check in xfrm_update_ae_params Normally, x->replay_esn and x->preplay_esn should be allocated at xfrm_alloc_replay_state_esn(...) in xfrm_state_construct(...), hence the xfrm_update_ae_params(...) is okay to update them. However, the current implementation of xfrm_new_ae(...) allows a malicious user to directly dereference a NULL pointer and crash the kernel like below. BUG: kernel NULL pointer dereference, address: 0000000000000000 PGD 8253067 P4D 8253067 PUD 8e0e067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 98 Comm: poc.npd Not tainted 6.4.0-rc7-00072-gdad9774deaf1 #8 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.o4 RIP: 0010:memcpy_orig+0xad/0x140 Code: e8 4c 89 5f e0 48 8d 7f e0 73 d2 83 c2 20 48 29 d6 48 29 d7 83 fa 10 72 34 4c 8b 06 4c 8b 4e 08 c RSP: 0018:ffff888008f57658 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff888008bd0000 RCX: ffffffff8238e571 RDX: 0000000000000018 RSI: ffff888007f64844 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888008f57818 R13: ffff888007f64aa4 R14: 0000000000000000 R15: 0000000000000000 FS: 00000000014013c0(0000) GS:ffff88806d600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000054d8000 CR4: 00000000000006f0 Call Trace: <TASK> ? __die+0x1f/0x70 ? page_fault_oops+0x1e8/0x500 ? __pfx_is_prefetch.constprop.0+0x10/0x10 ? __pfx_page_fault_oops+0x10/0x10 ? _raw_spin_unlock_irqrestore+0x11/0x40 ? fixup_exception+0x36/0x460 ? _raw_spin_unlock_irqrestore+0x11/0x40 ? exc_page_fault+0x5e/0xc0 ? asm_exc_page_fault+0x26/0x30 ? xfrm_update_ae_params+0xd1/0x260 ? memcpy_orig+0xad/0x140 ? __pfx__raw_spin_lock_bh+0x10/0x10 xfrm_update_ae_params+0xe7/0x260 xfrm_new_ae+0x298/0x4e0 ? __pfx_xfrm_new_ae+0x10/0x10 ? __pfx_xfrm_new_ae+0x10/0x10 xfrm_user_rcv_msg+0x25a/0x410 ? __pfx_xfrm_user_rcv_msg+0x10/0x10 ? __alloc_skb+0xcf/0x210 ? stack_trace_save+0x90/0xd0 ? filter_irq_stacks+0x1c/0x70 ? __stack_depot_save+0x39/0x4e0 ? __kasan_slab_free+0x10a/0x190 ? kmem_cache_free+0x9c/0x340 ? netlink_recvmsg+0x23c/0x660 ? sock_recvmsg+0xeb/0xf0 ? __sys_recvfrom+0x13c/0x1f0 ? __x64_sys_recvfrom+0x71/0x90 ? do_syscall_64+0x3f/0x90 ? entry_SYSCALL_64_after_hwframe+0x72/0xdc ? copyout+0x3e/0x50 netlink_rcv_skb+0xd6/0x210 ? __pfx_xfrm_user_rcv_msg+0x10/0x10 ? __pfx_netlink_rcv_skb+0x10/0x10 ? __pfx_sock_has_perm+0x10/0x10 ? mutex_lock+0x8d/0xe0 ? __pfx_mutex_lock+0x10/0x10 xfrm_netlink_rcv+0x44/0x50 netlink_unicast+0x36f/0x4c0 ? __pfx_netlink_unicast+0x10/0x10 ? netlink_recvmsg+0x500/0x660 netlink_sendmsg+0x3b7/0x700 This Null-ptr-deref bug is assigned CVE-2023-3772. And this commit adds additional NULL check in xfrm_update_ae_params to fix the NPD.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/00374d9b6d9f932802b55181be9831aa948e5b7c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/075448a2eb753f813fe873cfa52853e9fef8eedb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/44f69c96f8a147413c23c68cda4d6fb5e23137cd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/53df4be4f5221e90dc7aa9ce745a9a21bb7024f4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8046beb890ebc83c5820188c650073e1c6066e67
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87b655f4936b6fc01f3658aa88a22c923b379ebd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bd30aa9c7febb6e709670cd5154194189ca3b7b5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed1cba039309c80b49719fcff3e3d7cdddb73d96
Impacted products
Vendor Product Version
Linux Linux Version: d8647b79c3b7e223ac051439d165bc8e7bbb832f
Version: d8647b79c3b7e223ac051439d165bc8e7bbb832f
Version: d8647b79c3b7e223ac051439d165bc8e7bbb832f
Version: d8647b79c3b7e223ac051439d165bc8e7bbb832f
Version: d8647b79c3b7e223ac051439d165bc8e7bbb832f
Version: d8647b79c3b7e223ac051439d165bc8e7bbb832f
Version: d8647b79c3b7e223ac051439d165bc8e7bbb832f
Version: d8647b79c3b7e223ac051439d165bc8e7bbb832f
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   Linux Linux Version: 2.6.39
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{
  "containers": {
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          "programFiles": [
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              "version": "0",
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              "status": "unaffected",
              "version": "4.19.293",
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            },
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              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.255",
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              "status": "unaffected",
              "version": "5.10.192",
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            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.128",
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            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.47",
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              "version": "6.4.12",
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              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: add NULL check in xfrm_update_ae_params\n\nNormally, x-\u003ereplay_esn and x-\u003epreplay_esn should be allocated at\nxfrm_alloc_replay_state_esn(...) in xfrm_state_construct(...), hence the\nxfrm_update_ae_params(...) is okay to update them. However, the current\nimplementation of xfrm_new_ae(...) allows a malicious user to directly\ndereference a NULL pointer and crash the kernel like below.\n\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nPGD 8253067 P4D 8253067 PUD 8e0e067 PMD 0\nOops: 0002 [#1] PREEMPT SMP KASAN NOPTI\nCPU: 0 PID: 98 Comm: poc.npd Not tainted 6.4.0-rc7-00072-gdad9774deaf1 #8\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.o4\nRIP: 0010:memcpy_orig+0xad/0x140\nCode: e8 4c 89 5f e0 48 8d 7f e0 73 d2 83 c2 20 48 29 d6 48 29 d7 83 fa 10 72 34 4c 8b 06 4c 8b 4e 08 c\nRSP: 0018:ffff888008f57658 EFLAGS: 00000202\nRAX: 0000000000000000 RBX: ffff888008bd0000 RCX: ffffffff8238e571\nRDX: 0000000000000018 RSI: ffff888007f64844 RDI: 0000000000000000\nRBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000000 R12: ffff888008f57818\nR13: ffff888007f64aa4 R14: 0000000000000000 R15: 0000000000000000\nFS:  00000000014013c0(0000) GS:ffff88806d600000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000000 CR3: 00000000054d8000 CR4: 00000000000006f0\nCall Trace:\n \u003cTASK\u003e\n ? __die+0x1f/0x70\n ? page_fault_oops+0x1e8/0x500\n ? __pfx_is_prefetch.constprop.0+0x10/0x10\n ? __pfx_page_fault_oops+0x10/0x10\n ? _raw_spin_unlock_irqrestore+0x11/0x40\n ? fixup_exception+0x36/0x460\n ? _raw_spin_unlock_irqrestore+0x11/0x40\n ? exc_page_fault+0x5e/0xc0\n ? asm_exc_page_fault+0x26/0x30\n ? xfrm_update_ae_params+0xd1/0x260\n ? memcpy_orig+0xad/0x140\n ? __pfx__raw_spin_lock_bh+0x10/0x10\n xfrm_update_ae_params+0xe7/0x260\n xfrm_new_ae+0x298/0x4e0\n ? __pfx_xfrm_new_ae+0x10/0x10\n ? __pfx_xfrm_new_ae+0x10/0x10\n xfrm_user_rcv_msg+0x25a/0x410\n ? __pfx_xfrm_user_rcv_msg+0x10/0x10\n ? __alloc_skb+0xcf/0x210\n ? stack_trace_save+0x90/0xd0\n ? filter_irq_stacks+0x1c/0x70\n ? __stack_depot_save+0x39/0x4e0\n ? __kasan_slab_free+0x10a/0x190\n ? kmem_cache_free+0x9c/0x340\n ? netlink_recvmsg+0x23c/0x660\n ? sock_recvmsg+0xeb/0xf0\n ? __sys_recvfrom+0x13c/0x1f0\n ? __x64_sys_recvfrom+0x71/0x90\n ? do_syscall_64+0x3f/0x90\n ? entry_SYSCALL_64_after_hwframe+0x72/0xdc\n ? copyout+0x3e/0x50\n netlink_rcv_skb+0xd6/0x210\n ? __pfx_xfrm_user_rcv_msg+0x10/0x10\n ? __pfx_netlink_rcv_skb+0x10/0x10\n ? __pfx_sock_has_perm+0x10/0x10\n ? mutex_lock+0x8d/0xe0\n ? __pfx_mutex_lock+0x10/0x10\n xfrm_netlink_rcv+0x44/0x50\n netlink_unicast+0x36f/0x4c0\n ? __pfx_netlink_unicast+0x10/0x10\n ? netlink_recvmsg+0x500/0x660\n netlink_sendmsg+0x3b7/0x700\n\nThis Null-ptr-deref bug is assigned CVE-2023-3772. And this commit\nadds additional NULL check in xfrm_update_ae_params to fix the NPD."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:03:08.937Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ed1cba039309c80b49719fcff3e3d7cdddb73d96"
        },
        {
          "url": "https://git.kernel.org/stable/c/44f69c96f8a147413c23c68cda4d6fb5e23137cd"
        },
        {
          "url": "https://git.kernel.org/stable/c/8046beb890ebc83c5820188c650073e1c6066e67"
        },
        {
          "url": "https://git.kernel.org/stable/c/bd30aa9c7febb6e709670cd5154194189ca3b7b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/075448a2eb753f813fe873cfa52853e9fef8eedb"
        },
        {
          "url": "https://git.kernel.org/stable/c/87b655f4936b6fc01f3658aa88a22c923b379ebd"
        },
        {
          "url": "https://git.kernel.org/stable/c/53df4be4f5221e90dc7aa9ce745a9a21bb7024f4"
        },
        {
          "url": "https://git.kernel.org/stable/c/00374d9b6d9f932802b55181be9831aa948e5b7c"
        }
      ],
      "title": "xfrm: add NULL check in xfrm_update_ae_params",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53147",
    "datePublished": "2025-09-15T14:03:08.937Z",
    "dateReserved": "2025-05-02T15:51:43.565Z",
    "dateUpdated": "2025-09-15T14:03:08.937Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53147\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-15T14:15:37.133\",\"lastModified\":\"2025-09-15T15:22:27.090\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nxfrm: add NULL check in xfrm_update_ae_params\\n\\nNormally, x-\u003ereplay_esn and x-\u003epreplay_esn should be allocated at\\nxfrm_alloc_replay_state_esn(...) in xfrm_state_construct(...), hence the\\nxfrm_update_ae_params(...) is okay to update them. However, the current\\nimplementation of xfrm_new_ae(...) allows a malicious user to directly\\ndereference a NULL pointer and crash the kernel like below.\\n\\nBUG: kernel NULL pointer dereference, address: 0000000000000000\\nPGD 8253067 P4D 8253067 PUD 8e0e067 PMD 0\\nOops: 0002 [#1] PREEMPT SMP KASAN NOPTI\\nCPU: 0 PID: 98 Comm: poc.npd Not tainted 6.4.0-rc7-00072-gdad9774deaf1 #8\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.o4\\nRIP: 0010:memcpy_orig+0xad/0x140\\nCode: e8 4c 89 5f e0 48 8d 7f e0 73 d2 83 c2 20 48 29 d6 48 29 d7 83 fa 10 72 34 4c 8b 06 4c 8b 4e 08 c\\nRSP: 0018:ffff888008f57658 EFLAGS: 00000202\\nRAX: 0000000000000000 RBX: ffff888008bd0000 RCX: ffffffff8238e571\\nRDX: 0000000000000018 RSI: ffff888007f64844 RDI: 0000000000000000\\nRBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000000 R11: 0000000000000000 R12: ffff888008f57818\\nR13: ffff888007f64aa4 R14: 0000000000000000 R15: 0000000000000000\\nFS:  00000000014013c0(0000) GS:ffff88806d600000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000000000000 CR3: 00000000054d8000 CR4: 00000000000006f0\\nCall Trace:\\n \u003cTASK\u003e\\n ? __die+0x1f/0x70\\n ? page_fault_oops+0x1e8/0x500\\n ? __pfx_is_prefetch.constprop.0+0x10/0x10\\n ? __pfx_page_fault_oops+0x10/0x10\\n ? _raw_spin_unlock_irqrestore+0x11/0x40\\n ? fixup_exception+0x36/0x460\\n ? _raw_spin_unlock_irqrestore+0x11/0x40\\n ? exc_page_fault+0x5e/0xc0\\n ? asm_exc_page_fault+0x26/0x30\\n ? xfrm_update_ae_params+0xd1/0x260\\n ? memcpy_orig+0xad/0x140\\n ? __pfx__raw_spin_lock_bh+0x10/0x10\\n xfrm_update_ae_params+0xe7/0x260\\n xfrm_new_ae+0x298/0x4e0\\n ? __pfx_xfrm_new_ae+0x10/0x10\\n ? __pfx_xfrm_new_ae+0x10/0x10\\n xfrm_user_rcv_msg+0x25a/0x410\\n ? __pfx_xfrm_user_rcv_msg+0x10/0x10\\n ? __alloc_skb+0xcf/0x210\\n ? stack_trace_save+0x90/0xd0\\n ? filter_irq_stacks+0x1c/0x70\\n ? __stack_depot_save+0x39/0x4e0\\n ? __kasan_slab_free+0x10a/0x190\\n ? kmem_cache_free+0x9c/0x340\\n ? netlink_recvmsg+0x23c/0x660\\n ? sock_recvmsg+0xeb/0xf0\\n ? __sys_recvfrom+0x13c/0x1f0\\n ? __x64_sys_recvfrom+0x71/0x90\\n ? do_syscall_64+0x3f/0x90\\n ? entry_SYSCALL_64_after_hwframe+0x72/0xdc\\n ? copyout+0x3e/0x50\\n netlink_rcv_skb+0xd6/0x210\\n ? __pfx_xfrm_user_rcv_msg+0x10/0x10\\n ? __pfx_netlink_rcv_skb+0x10/0x10\\n ? __pfx_sock_has_perm+0x10/0x10\\n ? mutex_lock+0x8d/0xe0\\n ? __pfx_mutex_lock+0x10/0x10\\n xfrm_netlink_rcv+0x44/0x50\\n netlink_unicast+0x36f/0x4c0\\n ? __pfx_netlink_unicast+0x10/0x10\\n ? netlink_recvmsg+0x500/0x660\\n netlink_sendmsg+0x3b7/0x700\\n\\nThis Null-ptr-deref bug is assigned CVE-2023-3772. And this commit\\nadds additional NULL check in xfrm_update_ae_params to fix the NPD.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/00374d9b6d9f932802b55181be9831aa948e5b7c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/075448a2eb753f813fe873cfa52853e9fef8eedb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/44f69c96f8a147413c23c68cda4d6fb5e23137cd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/53df4be4f5221e90dc7aa9ce745a9a21bb7024f4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8046beb890ebc83c5820188c650073e1c6066e67\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/87b655f4936b6fc01f3658aa88a22c923b379ebd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bd30aa9c7febb6e709670cd5154194189ca3b7b5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ed1cba039309c80b49719fcff3e3d7cdddb73d96\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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