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

Vulnerability from cvelistv5 – Published: 2024-03-02 21:59 – Updated: 2025-05-04 07:39
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.
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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\"2f0acb0736ecc3eb85dc80ad2790d634dcb10b58\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1d76efe1577b4323609b1bcbfafa8b731eda071a\", \"lessThan\": \"cac50d9f5d876be32cb9aa21c74018468900284d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1d76efe1577b4323609b1bcbfafa8b731eda071a\", \"lessThan\": \"492032760127251e5540a5716a70996bacf2a3fd\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/team/team.c\", \"include/linux/if_team.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.14.327\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.296\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.258\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.198\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.134\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.56\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.5.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.5.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/team/team.c\", \"include/linux/if_team.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/1779eb51b9cc628cee551f252701a85a2a50a457\"}, {\"url\": \"https://git.kernel.org/stable/c/a7fb47b9711101d2405b0eb1276fb1f9b9b270c7\"}, {\"url\": \"https://git.kernel.org/stable/c/c5f6478686bb45f453031594ae19b6c9723a780d\"}, {\"url\": \"https://git.kernel.org/stable/c/b44dd92e2afd89eb6e9d27616858e72a67bdc1a7\"}, {\"url\": \"https://git.kernel.org/stable/c/cd05eec2ee0cc396813a32ef675634e403748255\"}, {\"url\": \"https://git.kernel.org/stable/c/2f0acb0736ecc3eb85dc80ad2790d634dcb10b58\"}, {\"url\": \"https://git.kernel.org/stable/c/cac50d9f5d876be32cb9aa21c74018468900284d\"}, {\"url\": \"https://git.kernel.org/stable/c/492032760127251e5540a5716a70996bacf2a3fd\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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.\"}], \"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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Sightings

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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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • 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.