Linux Kernel up to 6.5.7 nfc nfc_llcp_sock_get/nfc_llcp_sock_get_sn use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.5.7 and classified as problematic. Affected by this issue is the function nfc_llcp_sock_get/nfc_llcp_sock_get_sn of the component nfc. Performing a manipulation results in use after free. This vulnerability is identified as CVE-2023-52502. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 6.5.7 (Operating System). This affects the function nfc_llcp_sock_get/nfc_llcp_sock_get_sn of the component nfc. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. The impact remains unknown. The summary by CVE is:

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.

The weakness was released 03/02/2024. It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2023-52502 since 02/20/2024. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 209086 (SUSE SLES15 Security Update : kernel RT (Live Patch 11 for SLE 15 SP5) (SUSE-SU-2024:3623-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.297, 5.4.259, 5.10.199, 5.15.136, 6.1.59, 6.5.8 or 6.6 eliminates this vulnerability. Applying the patch e863f5720a56/7adcf014bda1/6ac22ecdaad2/d888d3f70b0d/e4f2611f07c8/d1af8a39cf83/31c07dffafce is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (209086). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.3
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 209086
Nessus Name: SUSE SLES15 Security Update : kernel RT (Live Patch 11 for SLE 15 SP5) (SUSE-SU-2024:3623-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.19.297/5.4.259/5.10.199/5.15.136/6.1.59/6.5.8/6.6
Patch: e863f5720a56/7adcf014bda1/6ac22ecdaad2/d888d3f70b0d/e4f2611f07c8/d1af8a39cf83/31c07dffafce

Timelineinfo

02/20/2024 🔍
03/02/2024 +11 days 🔍
03/02/2024 +0 days 🔍
11/05/2024 +248 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-52502 (🔍)
GCVE (CVE): GCVE-0-2023-52502
GCVE (VulDB): GCVE-100-255531

Entryinfo

Created: 03/02/2024 23:35
Updated: 11/05/2024 17:44
Changes: 03/02/2024 23:35 (43), 10/16/2024 16:33 (17), 11/05/2024 17:44 (12)
Complete: 🔍
Cache ID: 216::103

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