Debian Util-Linux vulnerabilities

CVE-2026-27456 [MEDIUM] CVE-2026-27456: util-linux - util-linux is a random collection of Linux utilities. Prior to version 2.41.4, a... 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 subsequently re-canoni

CVE-2026-3184 [LOW] CVE-2026-3184: util-linux - A flaw was found in util-linux. Improper hostname canonicalization in the `login... A flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by providing a specially crafted hostname, potentially bypassing host-based Pluggable Authentication Modules (PAM) access control rule

CVE-2025-14104 [MEDIUM] CVE-2025-14104: util-linux - A flaw was found in util-linux. This vulnerability allows a heap buffer overread... 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. Scope: local bookworm: open bullseye: open forky: resolved (fixed in 2.41.3-1) sid: resolved (fixed in 2.41.3-1) t

CVE-2024-28085 [LOW] CVE-2024-28085: util-linux - wall in util-linux through 2.40, often installed with setgid tty permissions, al... 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. Scope: local bookwo

CVE-2022-0563 [MEDIUM] CVE-2022-0563: util-linux - A flaw was found in the util-linux chfn and chsh utilities when compiled with Re... 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 root-owned fi

CVE-2021-3995 [MEDIUM] CVE-2021-3995: util-linux - A logic error was found in the libmount library of util-linux in the function th... 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 this flaw to c

CVE-2021-3996 [MEDIUM] CVE-2021-3996: util-linux - A logic error was found in the libmount library of util-linux in the function th... 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 flaw to cause

CVE-2021-37600 [MEDIUM] CVE-2021-37600: util-linux - An integer overflow in util-linux through 2.37.1 can potentially cause a buffer ... 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. Scope: local bookworm: resolved (fixed in 2.36.1-8) b

CVE-2020-21583 [MEDIUM] CVE-2020-21583: util-linux - An issue was discovered in hwclock.13-v2.27 allows attackers to gain escalated p... 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. Scope: local bookworm: resolved (fixed in 2.27-1) bullseye: resolved (fixed in 2.27-1) forky: resolved (fixed in 2.27-1) sid: resolved (fixed in 2.27-1) trixie: resolved (fixed in 2.27-1)

CVE-2018-7738 [HIGH] CVE-2018-7738: bash-completion - In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain... 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. Scope: local bookworm: open bullsey

CVE-2017-2616 [MEDIUM] CVE-2017-2616: coreutils - A race condition was found in util-linux before 2.32.1 in the way su handled the... 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. Scope: local bookworm: resolved (fixed in 8.20-1) bullseye: resolved (fixed in 8.20-1) forky: resolved (fixed in 8.20-1) sid: resol

CVE-2016-2779 [HIGH] CVE-2016-2779: util-linux - runuser in util-linux allows local users to escape to the parent session via a c... 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. Scope: local bookworm: resolved (fixed in 2.31.1-0.1) bullseye: resolved (fixed in 2.31.1-0.1) forky: resolved (fixed in 2.31.1-0.1) sid: resolved (fixed in 2.31.1-0.1) trixie: resolved (fixed in 2.31.1-0

CVE-2016-5011 [MEDIUM] CVE-2016-5011: util-linux - The parse_dos_extended function in partitions/dos.c in the libblkid library in u... 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. Scope: local bookworm: resolved (fixed in 2.28.1-1) bullseye: resolved (fixed in 2.28.1-1) forky

CVE-2015-5224 [CRITICAL] CVE-2015-5224: util-linux - The mkostemp function in login-utils in util-linux when used incorrectly allows ... The mkostemp function in login-utils in util-linux when used incorrectly allows remote attackers to cause file name collision and possibly other attacks. Scope: local bookworm: resolved (fixed in 2.27-1) bullseye: resolved (fixed in 2.27-1) forky: resolved (fixed in 2.27-1) sid: resolved (fixed in 2.27-1) trixie: resolved (fixed in 2.27-1)

CVE-2015-5218 [LOW] CVE-2015-5218: util-linux - Buffer overflow in text-utils/colcrt.c in colcrt in util-linux before 2.27 allow... Buffer overflow in text-utils/colcrt.c in colcrt in util-linux before 2.27 allows local users to cause a denial of service (crash) via a crafted file, related to the page global variable. Scope: local bookworm: resolved (fixed in 2.27-1) bullseye: resolved (fixed in 2.27-1) forky: resolved (fixed in 2.27-1) sid: resolved (fixed in 2.27-1) trixie: resolved (fixed in

CVE-2014-9114 [HIGH] CVE-2014-9114: util-linux - 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. Scope: local bookworm: resolved (fixed in 2.25.2-4) bullseye: resolved (fixed in 2.25.2-4) forky: resolved (fixed in 2.25.2-4) sid: resolved (fixed in 2.25.2-4) trixie: resolved (fixed in 2.25.2-4)

CVE-2013-0157 [LOW] CVE-2013-0157: util-linux - (a) mount and (b) umount in util-linux 2.14.1, 2.17.2, and probably other versio... (a) mount and (b) umount in util-linux 2.14.1, 2.17.2, and probably other versions allow local users to determine the existence of restricted directories by (1) using the --guess-fstype command-line option or (2) attempting to mount a non-existent device, which generates different error messages depending on whether the directory exists. Scope: local bookworm: resol

CVE-2011-1677 [MEDIUM] CVE-2011-1677: util-linux - mount in util-linux 2.19 and earlier does not remove the /etc/mtab~ lock file af... mount in util-linux 2.19 and earlier does not remove the /etc/mtab~ lock file after a failed attempt to add a mount entry, which has unspecified impact and local attack vectors. Scope: local bookworm: resolved (fixed in 2.20.1-1) bullseye: resolved (fixed in 2.20.1-1) forky: resolved (fixed in 2.20.1-1) sid: resolved (fixed in 2.20.1-1) trixie: resolved (fixed in

CVE-2011-1675 [LOW] CVE-2011-1675: util-linux - mount in util-linux 2.19 and earlier attempts to append to the /etc/mtab.tmp fil... mount in util-linux 2.19 and earlier attempts to append to the /etc/mtab.tmp file without first checking whether resource limits would interfere, which allows local users to trigger corruption of the /etc/mtab file via a process with a small RLIMIT_FSIZE value, a related issue to CVE-2011-1089. Scope: local bookworm: resolved (fixed in 2.20.1-1) bullseye: resolved (

CVE-2008-1926 [HIGH] CVE-2008-1926: util-linux - Argument injection vulnerability in login (login-utils/login.c) in util-linux-ng... 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." Scope: local bookworm: resolved (fixed in 2.13.1.1-1) bullseye: resolved (fixed