LOW 3.6 NVD
CVE-2026-91142
A flaw was found in Cockpit. An integer overflow vulnerability in the `do_lastlog()` function, specifically in the offset calculation for `lastlog` entries on I
A flaw was found in Cockpit. An integer overflow vulnerability in the `do_lastlog()` function, specifically in the offset calculation for `lastlog` entries on ILP32 (Integer, Long, Pointer 32-bit) builds, can be exploited. A low-privileged authenticated user with a specially provisioned large User ID (UID) can cause the computed offset to wrap around. This allows the user to perform unauthorized reads and writes to other users' `lastlog` records, potentially disclosing or altering sensitive login accounting information.
References
- https://access.redhat.com/security/cve/CVE-2026-91142
- https://bugzilla.redhat.com/show_bug.cgi?id=2479459
This low severity vulnerability with a CVSS score of 3.6 was published on 2026-09-18 via NVD.
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