CVE-2023-52574 (GCVE-0-2023-52574)

Vulnerability from cvelistv5 – Published: 2024-03-02 21:59 – Updated: 2026-05-11 19:29
VLAI
Title
team: fix null-ptr-deref when team device type is changed
Summary
In the Linux kernel, the following vulnerability has been resolved: team: fix null-ptr-deref when team device type is changed Get a null-ptr-deref bug as follows with reproducer [1]. BUG: kernel NULL pointer dereference, address: 0000000000000228 ... RIP: 0010:vlan_dev_hard_header+0x35/0x140 [8021q] ... Call Trace: <TASK> ? __die+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 worker_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 '{"runner": {"name": "loadbalance"}}' $ ip link add name t-dummy type dummy $ ip link add link t-dummy name t-dummy.100 type vlan id 100 $ ip link add name t-nlmon type nlmon $ ip link set t-nlmon master team0 $ ip link set t-nlmon nomaster $ ip link set t-dummy up $ ip link set team0 up $ ip link set t-dummy.100 down $ ip link set t-dummy.100 master team0 When enslave a vlan device to team device and team device type is changed from non-ether to ether, header_ops of team device is changed to vlan_header_ops. That is incorrect and will trigger null-ptr-deref for vlan->real_dev in vlan_dev_hard_header() because team device is not a vlan device. Cache eth_header_ops in team_setup(), then assign cached header_ops to header_ops of team net device when its type is changed from non-ether to ether to fix the bug.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1d76efe1577b4323609b1bcbfafa8b731eda071a , < 1779eb51b9cc628cee551f252701a85a2a50a457 (git)
Affected: 1d76efe1577b4323609b1bcbfafa8b731eda071a , < a7fb47b9711101d2405b0eb1276fb1f9b9b270c7 (git)
Affected: 1d76efe1577b4323609b1bcbfafa8b731eda071a , < c5f6478686bb45f453031594ae19b6c9723a780d (git)
Affected: 1d76efe1577b4323609b1bcbfafa8b731eda071a , < b44dd92e2afd89eb6e9d27616858e72a67bdc1a7 (git)
Affected: 1d76efe1577b4323609b1bcbfafa8b731eda071a , < cd05eec2ee0cc396813a32ef675634e403748255 (git)
Affected: 1d76efe1577b4323609b1bcbfafa8b731eda071a , < 2f0acb0736ecc3eb85dc80ad2790d634dcb10b58 (git)
Affected: 1d76efe1577b4323609b1bcbfafa8b731eda071a , < cac50d9f5d876be32cb9aa21c74018468900284d (git)
Affected: 1d76efe1577b4323609b1bcbfafa8b731eda071a , < 492032760127251e5540a5716a70996bacf2a3fd (git)
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Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 4.14.327 , ≤ 4.14.* (semver)
Unaffected: 4.19.296 , ≤ 4.19.* (semver)
Unaffected: 5.4.258 , ≤ 5.4.* (semver)
Unaffected: 5.10.198 , ≤ 5.10.* (semver)
Unaffected: 5.15.134 , ≤ 5.15.* (semver)
Unaffected: 6.1.56 , ≤ 6.1.* (semver)
Unaffected: 6.5.6 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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      "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.\"}]",
      "id": "CVE-2023-52574",
      "lastModified": "2024-12-11T15:30:26.120",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2024-03-02T22:15:49.393",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-476\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52574\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-02T22:15:49.393\",\"lastModified\":\"2026-06-17T06:43:03.680\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/team/team.c\",\"include/linux/if_team.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1d76efe1577b4323609b1bcbfafa8b731eda071a\",\"lessThan\":\"1779eb51b9cc628cee551f252701a85a2a50a457\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1d76efe1577b4323609b1bcbfafa8b731eda071a\",\"lessThan\":\"a7fb47b9711101d2405b0eb1276fb1f9b9b270c7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1d76efe1577b4323609b1bcbfafa8b731eda071a\",\"lessThan\":\"c5f6478686bb45f453031594ae19b6c9723a780d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1d76efe1577b4323609b1bcbfafa8b731eda071a\",\"lessThan\":\"b44dd92e2afd89eb6e9d27616858e72a67bdc1a7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1d76efe1577b4323609b1bcbfafa8b731eda071a\",\"lessThan\":\"cd05eec2ee0cc396813a32ef675634e403748255\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1d76efe1577b4323609b1bcbfafa8b731eda071a\",\"lessThan\":\"2f0acb0736ecc3eb85dc80ad2790d634dcb10b58\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1d76efe1577b4323609b1bcbfafa8b731eda071a\",\"lessThan\":\"cac50d9f5d876be32cb9aa21c74018468900284d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1d76efe1577b4323609b1bcbfafa8b731eda071a\",\"lessThan\":\"492032760127251e5540a5716a70996bacf2a3fd\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/team/team.c\",\"include/linux/if_team.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.327\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.296\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.258\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.198\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.134\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.56\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.5.6\",\"lessThanOrEqual\":\"6.5.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-03-06T20:45:03.463636Z\",\"id\":\"CVE-2023-52574\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:44:52+00:00",
      "cve": "CVE-2023-52574",
      "id": "CVE-2023-52574",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "429",
      "product_status:known_affected": "50",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: team: NULL pointer dereference when team device type is changed",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52574.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-23T02:18:54Z",
      "cve": "CVE-2023-52574",
      "id": "CVE-2023-52574",
      "initial_release_date": "2024-03-05T04:31:33Z",
      "product_status:known_affected": "341",
      "product_status:known_not_affected": "66",
      "product_status:recommended": "976",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-52574",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-52574.json",
      "version": "64"
    },
    "vulnrichment": {
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[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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.327\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.296\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.258\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.198\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.134\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.56\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5.6\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6\", \"versionStartIncluding\": \"3.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:39:04.288Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52574\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:39:04.288Z\", \"dateReserved\": \"2024-03-02T21:55:42.568Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-02T21:59:43.271Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.