SB20260815312 - Out-of-bounds read in Linux kernel net driver
Published: August 15, 2026
Security Bulletin ID
SB20260815312
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2026-72408)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in geneve_gro_complete() when processing an attacker-supplied GRO hint option on a tunnel without GRO hint enabled. A remote attacker can send a specially crafted packet to disclose sensitive information.
Tunnels that enable the GRO hint are unaffected.
Remediation
Install update from vendor's website.