Linux Kernel up to 5.18.2 mt7915_mac_fill_rx_vector null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 5.18.2. This issue affects the function mt7915_mac_fill_rx_vector. Performing a manipulation results in null pointer dereference. This vulnerability is identified as CVE-2022-49484. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.18.2. This affects the function mt7915_mac_fill_rx_vector. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: mt76: mt7915: fix possible NULL pointer dereference in mt7915_mac_fill_rx_vector Fix possible NULL pointer dereference in mt7915_mac_fill_rx_vector routine if the chip does not support dbdc and the hw reports band_idx set to 1.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-49484 since 02/26/2025. Technical details are known, but no exploit is available.

Upgrading to version 5.18.3 eliminates this vulnerability. Applying the patch 268e8ef187eb8780d021b0e4f5ffa92dee5c4983/62fdc974894eec80d678523458cf99bbdb887e22 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.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.18.3
Patch: 268e8ef187eb8780d021b0e4f5ffa92dee5c4983/62fdc974894eec80d678523458cf99bbdb887e22

Timelineinfo

02/26/2025 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49484 (🔍)
GCVE (CVE): GCVE-0-2022-49484
GCVE (VulDB): GCVE-100-297081

Entryinfo

Created: 02/26/2025 10:09
Changes: 02/26/2025 10:09 (58)
Complete: 🔍
Cache ID: 216::103

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