Linux Kernel up to 6.10.7 pn533 nfc_start_poll divide by zero

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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.10.7. Affected by this vulnerability is the function nfc_start_poll of the component pn533. Executing a manipulation can lead to divide by zero. The identification of this vulnerability is CVE-2024-46676. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.10.7. This vulnerability affects the function nfc_start_poll of the component pn533. The manipulation with an unknown input leads to a divide by zero vulnerability. The CWE definition for the vulnerability is CWE-369. The product divides a value by zero. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: Add poll mod list filling check In case of im_protocols value is 1 and tm_protocols value is 0 this combination successfully passes the check 'if (!im_protocols && !tm_protocols)' in the nfc_start_poll(). But then after pn533_poll_create_mod_list() call in pn533_start_poll() poll mod list will remain empty and dev->poll_mod_count will remain 0 which lead to division by zero. Normally no im protocol has value 1 in the mask, so this combination is not expected by driver. But these protocol values actually come from userspace via Netlink interface (NFC_CMD_START_POLL operation). So a broken or malicious program may pass a message containing a "bad" combination of protocol parameter values so that dev->poll_mod_count is not incremented inside pn533_poll_create_mod_list(), thus leading to division by zero. Call trace looks like: nfc_genl_start_poll() nfc_start_poll() ->start_poll() pn533_start_poll() Add poll mod list filling check. Found by Linux Verification Center (linuxtesting.org) with SVACE.

The advisory is available at git.kernel.org. This vulnerability was named CVE-2024-46676 since 09/11/2024. The exploitation appears to be difficult. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 208099 (Debian dsa-5782 : affs-modules-6.1.0-21-4kc-malta-di - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.283, 5.10.225, 5.15.166, 6.1.108, 6.6.49 or 6.10.8 eliminates this vulnerability. Applying the patch c5e05237444f/8ddaea033de0/7535db0624a2/7ecd3dd4f8ee/56ad559cf6d8/64513d0e546a/febccb39255f 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 (208099). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Divide by zero
CWE: CWE-369 / CWE-404
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: 208099
Nessus Name: Debian dsa-5782 : affs-modules-6.1.0-21-4kc-malta-di - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.4.283/5.10.225/5.15.166/6.1.108/6.6.49/6.10.8
Patch: c5e05237444f/8ddaea033de0/7535db0624a2/7ecd3dd4f8ee/56ad559cf6d8/64513d0e546a/febccb39255f

Timelineinfo

09/11/2024 🔍
09/13/2024 +2 days 🔍
09/13/2024 +0 days 🔍
10/05/2024 +22 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-46676 (🔍)
GCVE (CVE): GCVE-0-2024-46676
GCVE (VulDB): GCVE-100-277354

Entryinfo

Created: 09/13/2024 08:21
Updated: 10/05/2024 22:03
Changes: 09/13/2024 08:21 (59), 09/23/2024 16:54 (12), 10/05/2024 22:03 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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