CVE-2026-49424
mediumThe Linux waitid() implementation translates a FreeBSD siginfo_t struct into a stack-declared Linux siginfo_t.
Vendor / product: Freebsd — freebsd
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.
CVSS
5.5
5.5 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
Timeline (UTC)
Published: 2026-08-19 08:17
Modified: 2026-10-27 12:10
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-28 11:30 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
freebsd / freebsd 14.3, 14.4, 15.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://security.freebsd.org/advisories/FreeBSD-SA-26:47.linux.asc
References
- https://security.freebsd.org/advisories/FreeBSD-SA-26:47.linux.asc secteam@freebsd.org
Data sources
NVD CVE API 2.0 — fetched 2026-10-28 11:30 UTC · record ↗