CVE-2023-52502net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn()
- 8.8HighCVSS base score
- 0.25%Exploitation in 30 daysEPSS · top 84% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CISA-ADPADP (enrichment) | 3.1 | Medium6.3 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.25% · top 84% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected 8f50020ed9b81ba909ce9573f9d05263cdebf502 – < e863f5720a5680e50c4cecf12424d7cc31b3eb0a
- affected 8f50020ed9b81ba909ce9573f9d05263cdebf502 – < 7adcf014bda16cdbf804af5c164d94d5d025db2d
- affected 8f50020ed9b81ba909ce9573f9d05263cdebf502 – < 6ac22ecdaad2ecc662048f8c6b0ceb1ca0699ef9
- affected 8f50020ed9b81ba909ce9573f9d05263cdebf502 – < d888d3f70b0de32b4f51534175f039ddab15eef8
- affected 8f50020ed9b81ba909ce9573f9d05263cdebf502 – < e4f2611f07c87b3ddb57c4b9e8efcd1e330fc3dc
- affected 8f50020ed9b81ba909ce9573f9d05263cdebf502 – < d1af8a39cf839d93c8967fdd858f6bbdc3e4a15c
- affected 8f50020ed9b81ba909ce9573f9d05263cdebf502 – < 31c07dffafce914c1d1543c135382a11ff058d93
- affected 3.6
- unaffected < 3.6
- unaffected 4.19.297 – ≤ 4.19.*
- unaffected 5.4.259 – ≤ 5.4.*
- unaffected 5.10.199 – ≤ 5.10.*
- unaffected 5.15.136 – ≤ 5.15.*
- unaffected 6.1.59 – ≤ 6.1.*
- unaffected 6.5.8 – ≤ 6.5.*
- unaffected 6.6 – ≤ *
References
References7
- https://git.kernel.org/stable/c/e863f5720a5680e50c4cecf12424d7cc31b3eb0a (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/7adcf014bda16cdbf804af5c164d94d5d025db2d (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/6ac22ecdaad2ecc662048f8c6b0ceb1ca0699ef9 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/d888d3f70b0de32b4f51534175f039ddab15eef8 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/e4f2611f07c87b3ddb57c4b9e8efcd1e330fc3dc (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/d1af8a39cf839d93c8967fdd858f6bbdc3e4a15c (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/31c07dffafce914c1d1543c135382a11ff058d93 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-57127 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-52502)Record last updated .