SB20250226399 - NULL pointer dereference in Linux kernel mt76 mt7921 driver
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226399
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2022-49476)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the mt7921e_unregister_device() and mt7921_pci_remove() functions in drivers/net/wireless/mediatek/mt76/mt7921/pci.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/09693f5b636fb3f6dd56fd943226fc1bbc600b51
- https://git.kernel.org/stable/c/677e669973bf5460705bc65033445ea9f6615999
- https://git.kernel.org/stable/c/ad483ed9dd5193a54293269c852a29051813b7bd
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19