HighFix available
net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn()
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() Sili Luo reported a race in nfc_llcp_sock_get(), leading to UAF. Getting a reference on the socket found in a lookup while holding a lock should happen before releasing the lock. nfc_llcp_sock_get_sn() has a similar problem. Finally nfc_llcp_recv_snl() needs to make sure the socket found by nfc_llcp_sock_from_sn() does not disappear.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 4.19.297, 5.10.199, 5.15.136, 5.4.259, 6.1.59, 6.5.8
- CVEs
- CVE-2023-52502
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 00:32 UTC · Revision 1
Source evidence
net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn()
core-osv · Original sourcePublished 2 Mar 2024, 21:52 UTC
In the Linux kernel, the following vulnerability has been resolved: net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() Sili Luo reported a race in nfc_llcp_sock_get(), leading to UAF. Getting a reference on the socket found in a lookup while holding a lock should happen before releasing the lock. nfc_llcp_sock_get_sn() has a similar problem. Finally nfc_llcp_recv_snl() needs to make sure the socket found by nfc_llcp_sock_from_sn() does not disappear.
osv:CVE-2023-52502
Kernel
Fixed versions: 4.19.297, 5.4.259, 5.10.199, 5.15.136, 6.1.59, 6.5.8
Complete source record
{
"id": "da28a697a7af0f39753f20e6a918882b14eda9b5a17712ab16ac3bfa968ec040",
"url": "https://osv.dev/vulnerability/CVE-2023-52502",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn()",
"summary": "In the Linux kernel, the following vulnerability has been resolved: net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() Sili Luo reported a race in nfc_llcp_sock_get(), leading to UAF. Getting a reference on the socket found in a lookup while holding a lock should happen before releasing the lock. nfc_llcp_sock_get_sn() has a similar problem. Finally nfc_llcp_recv_snl() needs to make sure the socket found by nfc_llcp_sock_from_sn() does not disappear.",
"evidence": "osv:CVE-2023-52502",
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],
"modified": "2026-10-28T02:30:32.648684363Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/d1af8a39cf839d93c8967fdd858f6bbdc3e4a15c",
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"https://git.kernel.org/stable/c/e4f2611f07c87b3ddb57c4b9e8efcd1e330fc3dc",
"https://git.kernel.org/stable/c/e863f5720a5680e50c4cecf12424d7cc31b3eb0a",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52502.json",
"https://nvd.nist.gov/vuln/detail/CVE-2023-52502",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52502.json"
}
},
"related_cves": [
{
"value": "CVE-2023-52502",
"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 499348,
"published_at": "2024-03-02T21:52:17.218+00:00"
}