{"id":"CVE-2026-49425","aliases":["EUVD-2026-62346","GHSA-jjwm-g4j5-q96v"],"status":"published","title":"Kernel stack disclosure in 32-bit compatibility support","description":"The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit struct.  It did not first zero the stack struct.\n\nAn unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00151,"percentile":0.04295,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-908"],"published":"2026-08-19T07:11:21Z","modified":"2026-10-27T12:10:00Z","products":[{"vendor":"freebsd","product":"freebsd"}],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:48.compat32.asc","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49425"},{"url":"https://github.com/advisories/GHSA-jjwm-g4j5-q96v"}],"sources":{"cve":[{"id":"CVE-2026-49425","title":"Kernel stack disclosure in 32-bit compatibility support","description":"The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit struct.  It did not first zero the stack struct.\n\nAn unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information.","status":"published","published":"2026-08-19T07:11:21.113Z","modified":"2026-08-26T17:53:28.932Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T13:34:59.78118Z"}],"euvd":[{"id":"EUVD-2026-62346","description":"The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit struct.  It did not first zero the stack struct.\n\nAn unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information.","status":"published","published":"2026-08-19T07:11:21Z","modified":"2026-08-26T17:53:28Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T18:01:30.08255Z"}],"ghsa":[{"id":"GHSA-jjwm-g4j5-q96v","title":"The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit...","description":"The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit struct.  It did not first zero the stack struct.\n\nAn unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information.","status":"published","published":"2026-08-19T09:31:23Z","modified":"2026-08-26T18:32:19Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T15:11:00.757195Z"}],"nvd":[{"id":"CVE-2026-49425","description":"The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit struct.  It did not first zero the stack struct.\n\nAn unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information.","status":"published","published":"2026-08-19T08:17:12.16Z","modified":"2026-10-27T12:10:00.343Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:12:39.620837Z"}]}}