What’s Vulnerable › Vulnerabilities
CVE-2026-49424: Kernel stack disclosure in Linux compatibility layer
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-19 · updated 2026-10-27
- Weakness: CWE-908
Description
The Linux waitid() implementation translates a FreeBSD siginfo_t struct into a stack-declared Linux siginfo_t. It did not first zero the stack struct. An unprivileged user may observe 104 bytes of uninitialized kernel stack data, which may contain sensitive information.
Affected products
- FreeBSD: 14.3, 14.3-p1, 14.3-p10, 14.3-p11, 14.3-p12, 14.3-p13 (+29)
References
Get alerted when CVE-2026-49424 or the next vulnerability affects your stack