SB2026040691 - Memory leak in Linux kernel mac80211
Published: April 6, 2026
Security Bulletin ID
SB2026040691
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) Memory leak (CVE-ID: CVE-2026-23444)
The vulnerability allows a local attacker to cause a denial of service.
The vulnerability exists due to improper memory management in ieee80211_tx_prepare_skb() when processing transmit skbs. A local attacker can trigger an error path that does not free an skb to cause a denial of service.
The issue affects the first error path where ieee80211_tx_prepare() returns TX_DROP, resulting in inconsistent skb handling compared to the other error paths.
Remediation
Install update from vendor's website.