Kernel Util-Linux vulnerabilities

CVE-2015-5224 [CRITICAL] CWE-377 CVE-2015-5224: The mkostemp function in login-utils in util-linux when used incorrectly allows remote attackers to The mkostemp function in login-utils in util-linux when used incorrectly allows remote attackers to cause file name collision and possibly other attacks.

CVE-2018-7738 [HIGH] CVE-2018-7738: In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embed In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.

CVE-2008-1926 [HIGH] CVE-2008-1926: Argument injection vulnerability in login (login-utils/login Argument injection vulnerability in login (login-utils/login.c) in util-linux-ng 2.14 and earlier makes it easier for remote attackers to hide activities by modifying portions of log events, as demonstrated by appending an "addr=" statement to the login name, aka "audit log injection."

CVE-2014-9114 [HIGH] CWE-77 CVE-2014-9114: Blkid in util-linux before 2.26rc-1 allows local users to execute arbitrary code. Blkid in util-linux before 2.26rc-1 allows local users to execute arbitrary code.

CVE-2016-2779 [HIGH] CWE-264 CVE-2016-2779: runuser in util-linux allows local users to escape to the parent session via a crafted TIOCSTI ioctl runuser in util-linux allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

CVE-2020-21583 [MEDIUM] CWE-78 CVE-2020-21583: An issue was discovered in hwclock.13-v2.27 allows attackers to gain escalated privlidges or execute An issue was discovered in hwclock.13-v2.27 allows attackers to gain escalated privlidges or execute arbitrary commands via the path parameter when setting the date.

CVE-2025-14104 [MEDIUM] CVE-2025-14104: A flaw was found in util-linux A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing 256-byte usernames, specifically within the `setpwnam()` function, affecting SUID (Set User ID) login-utils utilities writing to the password database.

CVE-2007-5191 [HIGH] CWE-252 CVE-2007-5191: mount and umount in util-linux and loop-aes-utils call the setuid and setgid functions in the wrong mount and umount in util-linux and loop-aes-utils call the setuid and setgid functions in the wrong order and do not check the return values, which might allow attackers to gain privileges via helpers such as mount.nfs.

CVE-2022-0563 [MEDIUM] CWE-209 CVE-2022-0563: A flaw was found in the util-linux chfn and chsh utilities when compiled with Readline support. The A flaw was found in the util-linux chfn and chsh utilities when compiled with Readline support. The Readline library uses an "INPUTRC" environment variable to get a path to the library config file. When the library cannot parse the specified file, it prints an error message containing data from the file. This flaw allows an unprivileged user to read ro

CVE-2026-13595 [MEDIUM] CWE-416 CVE-2026-13595: A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Mi A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be reallocated, this pointer becomes stale, leading to a heap use

CVE-2005-2876 [HIGH] CVE-2005-2876: umount in util-linux 2 umount in util-linux 2.8 to 2.12q, 2.13-pre1, and 2.13-pre2, and other packages such as loop-aes-utils, allows local users with unmount permissions to gain privileges via the -r (remount) option, which causes the file system to be remounted with just the read-only flag, which effectively clears the nosuid, nodev, and other flags.

CVE-2026-27456 [MEDIUM] CWE-59 CVE-2026-27456: util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU (Time-of-Che util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a TOCTOU (Time-of-Check-Time-of-Use) vulnerability has been identified in the SUID binary /usr/bin/mount from util-linux. The mount binary, when setting up loop devices, validates the source file path with user privileges via fork() + setuid() + realpath(), but subsequentl

CVE-2021-3996 [MEDIUM] CWE-552 CVE-2021-3996: A logic error was found in the libmount library of util-linux in the function that allows an unprivi A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows a local user on a vulnerable system to unmount other users' filesystems that are either world-writable themselves (like /tmp) or mounted in a world-writable directory. An attacker may use this fl

CVE-2021-3995 [MEDIUM] CWE-552 CVE-2021-3995: A logic error was found in the libmount library of util-linux in the function that allows an unprivi A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use th

CVE-2021-37600 [MEDIUM] CWE-190 CVE-2021-37600: An integer overflow in util-linux through 2.37.1 can potentially cause a buffer overflow if an attac An integer overflow in util-linux through 2.37.1 can potentially cause a buffer overflow if an attacker were able to use system resources in a way that leads to a large number in the /proc/sysvipc/sem file. NOTE: this is unexploitable in GNU C Library environments, and possibly in all realistic environments.

CVE-2017-2616 [MEDIUM] CVE-2017-2616: A race condition was found in util-linux before 2 A race condition was found in util-linux before 2.32.1 in the way su handled the management of child processes. A local authenticated attacker could use this flaw to kill other processes with root privileges under specific conditions.

CVE-2024-28085 [LOW] CWE-150 CVE-2024-28085: wall in util-linux through 2.40, often installed with setgid tty permissions, allows escape sequence wall in util-linux through 2.40, often installed with setgid tty permissions, allows escape sequences to be sent to other users' terminals through argv. (Specifically, escape sequences received from stdin are blocked, but escape sequences received from argv are not blocked.) There may be plausible scenarios where this leads to account takeover.

CVE-2001-1494 [MEDIUM] CWE-59 CVE-2001-1494: script command in the util-linux package before 2.11n allows local users to overwrite arbitrary file script command in the util-linux package before 2.11n allows local users to overwrite arbitrary files by setting a hardlink from the typescript log file to any file on the system, then having root execute the script command.

CVE-2006-7108 [MEDIUM] CVE-2006-7108: login in util-linux-2 login in util-linux-2.12a skips pam_acct_mgmt and chauth_tok when authentication is skipped, such as when a Kerberos krlogin session has been established, which might allow users to bypass intended access policies that would be enforced by pam_acct_mgmt and chauth_tok.

CVE-2016-5011 [MEDIUM] CVE-2016-5011: The parse_dos_extended function in partitions/dos.c in the libblkid library in util-linux allows phy The parse_dos_extended function in partitions/dos.c in the libblkid library in util-linux allows physically proximate attackers to cause a denial of service (memory consumption) via a crafted MSDOS partition table with an extended partition boot record at zero offset.