cve-2023-52574
Vulnerability from cvelistv5
Published
2024-03-02 21:59
Modified
2024-11-04 14:49
Severity ?
Summary
team: fix null-ptr-deref when team device type is changed
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nteam: fix null-ptr-deref when team device type is changed\n\nGet a null-ptr-deref bug as follows with reproducer [1].\n\nBUG: kernel NULL pointer dereference, address: 0000000000000228\n...\nRIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]\n...\nCall Trace:\n \u003cTASK\u003e\n ? __die+0x24/0x70\n ? page_fault_oops+0x82/0x150\n ? exc_page_fault+0x69/0x150\n ? asm_exc_page_fault+0x26/0x30\n ? vlan_dev_hard_header+0x35/0x140 [8021q]\n ? vlan_dev_hard_header+0x8e/0x140 [8021q]\n neigh_connected_output+0xb2/0x100\n ip6_finish_output2+0x1cb/0x520\n ? nf_hook_slow+0x43/0xc0\n ? ip6_mtu+0x46/0x80\n ip6_finish_output+0x2a/0xb0\n mld_sendpack+0x18f/0x250\n mld_ifc_work+0x39/0x160\n process_one_work+0x1e6/0x3f0\n worker_thread+0x4d/0x2f0\n ? __pfx_worker_thread+0x10/0x10\n kthread+0xe5/0x120\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x34/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1b/0x30\n\n[1]\n$ teamd -t team0 -d -c \u0027{\"runner\": {\"name\": \"loadbalance\"}}\u0027\n$ ip link add name t-dummy type dummy\n$ ip link add link t-dummy name t-dummy.100 type vlan id 100\n$ ip link add name t-nlmon type nlmon\n$ ip link set t-nlmon master team0\n$ ip link set t-nlmon nomaster\n$ ip link set t-dummy up\n$ ip link set team0 up\n$ ip link set t-dummy.100 down\n$ ip link set t-dummy.100 master team0\n\nWhen enslave a vlan device to team device and team device type is changed\nfrom non-ether to ether, header_ops of team device is changed to\nvlan_header_ops. That is incorrect and will trigger null-ptr-deref\nfor vlan-\u003ereal_dev in vlan_dev_hard_header() because team device is not\na vlan device.\n\nCache eth_header_ops in team_setup(), then assign cached header_ops to\nheader_ops of team net device when its type is changed from non-ether\nto ether to fix the bug."
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52574",
    "datePublished": "2024-03-02T21:59:43.271Z",
    "dateReserved": "2024-03-02T21:55:42.568Z",
    "dateUpdated": "2024-11-04T14:49:01.619Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52574\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-02T22:15:49.393\",\"lastModified\":\"2024-03-04T13:58:23.447\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nteam: fix null-ptr-deref when team device type is changed\\n\\nGet a null-ptr-deref bug as follows with reproducer [1].\\n\\nBUG: kernel NULL pointer dereference, address: 0000000000000228\\n...\\nRIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]\\n...\\nCall Trace:\\n \u003cTASK\u003e\\n ? __die+0x24/0x70\\n ? page_fault_oops+0x82/0x150\\n ? exc_page_fault+0x69/0x150\\n ? asm_exc_page_fault+0x26/0x30\\n ? vlan_dev_hard_header+0x35/0x140 [8021q]\\n ? vlan_dev_hard_header+0x8e/0x140 [8021q]\\n neigh_connected_output+0xb2/0x100\\n ip6_finish_output2+0x1cb/0x520\\n ? nf_hook_slow+0x43/0xc0\\n ? ip6_mtu+0x46/0x80\\n ip6_finish_output+0x2a/0xb0\\n mld_sendpack+0x18f/0x250\\n mld_ifc_work+0x39/0x160\\n process_one_work+0x1e6/0x3f0\\n worker_thread+0x4d/0x2f0\\n ? __pfx_worker_thread+0x10/0x10\\n kthread+0xe5/0x120\\n ? __pfx_kthread+0x10/0x10\\n ret_from_fork+0x34/0x50\\n ? __pfx_kthread+0x10/0x10\\n ret_from_fork_asm+0x1b/0x30\\n\\n[1]\\n$ teamd -t team0 -d -c \u0027{\\\"runner\\\": {\\\"name\\\": \\\"loadbalance\\\"}}\u0027\\n$ ip link add name t-dummy type dummy\\n$ ip link add link t-dummy name t-dummy.100 type vlan id 100\\n$ ip link add name t-nlmon type nlmon\\n$ ip link set t-nlmon master team0\\n$ ip link set t-nlmon nomaster\\n$ ip link set t-dummy up\\n$ ip link set team0 up\\n$ ip link set t-dummy.100 down\\n$ ip link set t-dummy.100 master team0\\n\\nWhen enslave a vlan device to team device and team device type is changed\\nfrom non-ether to ether, header_ops of team device is changed to\\nvlan_header_ops. That is incorrect and will trigger null-ptr-deref\\nfor vlan-\u003ereal_dev in vlan_dev_hard_header() because team device is not\\na vlan device.\\n\\nCache eth_header_ops in team_setup(), then assign cached header_ops to\\nheader_ops of team net device when its type is changed from non-ether\\nto ether to fix the bug.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: equipo: corrige null-ptr-deref cuando se cambia el tipo de dispositivo del equipo. Obtiene un error null-ptr-deref de la siguiente manera con el reproductor [1]. ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000228... RIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q]... Seguimiento de llamadas: ? __morir+0x24/0x70 ? page_fault_oops+0x82/0x150? exc_page_fault+0x69/0x150? asm_exc_page_fault+0x26/0x30? vlan_dev_hard_header+0x35/0x140 [8021q] ? vlan_dev_hard_header+0x8e/0x140 [8021q] neigh_connected_output+0xb2/0x100 ip6_finish_output2+0x1cb/0x520 ? nf_hook_slow+0x43/0xc0? ip6_mtu+0x46/0x80 ip6_finish_output+0x2a/0xb0 mld_sendpack+0x18f/0x250 mld_ifc_work+0x39/0x160 Process_one_work+0x1e6/0x3f0 trabajador_thread+0x4d/0x2f0? __pfx_worker_thread+0x10/0x10 kthread+0xe5/0x120 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30 [1] $ teamd -t team0 -d -c \u0027{\\\"runner\\\": {\\\"name\\\": \\\"loadbalance\\\"}}\u0027 $ enlace ip agregar nombre t-dummy tipo dummy $ enlace ip agregar enlace t-dummy nombre t-dummy.100 tipo vlan id 100 $ enlace ip agregar nombre t-nlmon tipo nlmon $ conjunto de enlaces ip t-nlmon master team0 $ conjunto de enlaces ip t-nlmon nomaster $ conjunto de enlaces ip t- dummy up $ ip link set team0 up $ ip link set t-dummy.100 down $ ip link set t-dummy.100 master team0 Cuando se esclaviza un dispositivo VLAN a un dispositivo de equipo y el tipo de dispositivo de equipo se cambia de no ether a ether, header_ops del dispositivo del equipo se cambia a vlan_header_ops. Eso es incorrecto y activar\u00e1 null-ptr-deref para vlan-\u0026gt;real_dev en vlan_dev_hard_header() porque el dispositivo del equipo no es un dispositivo vlan. Almacene en cach\u00e9 eth_header_ops en team_setup(), luego asigne header_ops almacenados en cach\u00e9 a header_ops del dispositivo team net cuando su tipo cambie de no ether a ether para corregir el error.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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}


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