Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could use this to cause a denial of service (kernel memory exhaustion) or gain privileges via executing arbitrary code. AKA ZDI-CAN-13562.
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HCanonical Ubuntu
OSCanonical< 18.0418.04.1 – 20.04 (excl.)< 20.10
🟢
PATCH AVAILABLE
Vendor update available. Deploy in standard maintenance cycle.
Tags
DoS
References
Related vulnerabilities
CVE-2025-32463CRITICAL9.3⚠ KEVPL ✓same product
Sudo: eskalacja uprawnień do root poprzez opcję --chroot (CVE-2025-32463)
CVE-2022-0543CRITICAL10.0⚠ KEVPL ✓same product
Redis – ucieczka z Lua sandbox umożliwiająca zdalne wykonanie kodu (RCE)
CVE-2020-11651CRITICAL9.8⚠ KEVPL ✓same product
SaltStack Salt: nieautoryzowany dostęp do metod salt-master umożliwiający RCE
CVE-2020-7247CRITICAL9.8⚠ KEVPL ✓same product
RCE jako root w OpenSMTPD przez command injection w polu MAIL FROM
CVE-2019-16928CRITICAL9.8⚠ KEVPL ✓same product
RCE w Exim — heap-based buffer overflow w obsłudze komendy EHLO