CVE-2023-52502

MEDIUM
Published Mar 2, 2024 Modified Mar 19, 2025 CWE-362 CWE-416

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.

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CVSS v3.1 Score

6.3
MEDIUM
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness Type (CWE)

CWE-362 CWE-362
CWE-416 Use After Free

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/31c07dffafce914c1d1543c135382a11ff058d93 https://git.kernel.org/stable/c/6ac22ecdaad2ecc662048f8c6b0ceb1ca0699ef9 https://git.kernel.org/stable/c/7adcf014bda16cdbf804af5c164d94d5d025db2d https://git.kernel.org/stable/c/d1af8a39cf839d93c8967fdd858f6bbdc3e4a15c https://git.kernel.org/stable/c/d888d3f70b0de32b4f51534175f039ddab15eef8 https://git.kernel.org/stable/c/e4f2611f07c87b3ddb57c4b9e8efcd1e330fc3dc https://git.kernel.org/stable/c/e863f5720a5680e50c4cecf12424d7cc31b3eb0a https://git.kernel.org/stable/c/31c07dffafce914c1d1543c135382a11ff058d93 https://git.kernel.org/stable/c/6ac22ecdaad2ecc662048f8c6b0ceb1ca0699ef9 https://git.kernel.org/stable/c/7adcf014bda16cdbf804af5c164d94d5d025db2d https://git.kernel.org/stable/c/d1af8a39cf839d93c8967fdd858f6bbdc3e4a15c https://git.kernel.org/stable/c/d888d3f70b0de32b4f51534175f039ddab15eef8 https://git.kernel.org/stable/c/e4f2611f07c87b3ddb57c4b9e8efcd1e330fc3dc https://git.kernel.org/stable/c/e863f5720a5680e50c4cecf12424d7cc31b3eb0a

Frequently Asked Questions

What is CVE-2023-52502? +
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. It has a CVSS v3.1 base score of 6.3 (MEDIUM).
How severe is CVE-2023-52502? +
CVE-2023-52502 has a CVSS v3.1 score of 6.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2023-52502? +
CVE-2023-52502 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2023-52502? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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