22 results · Feed
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High 8.0
util-linux libblkid DOS extended-partition overflow produces invalid partition metadata
util-linux is a random collection of Linux utilities. Before util-linux 2.41.4, `parse_dos_extended()` in `libblkid/src/partitions/dos.c` computes an extended-partition start sector with 32-bit addition and does not apply the extended-area bounds checks to th…
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High 7.0
util-linux LIBMOUNT_FORCE_MOUNT2 allows nosuid and noexec bypass
util-linux is a random collection of Linux utilities. In util-linux 2.39.1 through 2.41.4 and 2.42 through 2.42.1, the SUID `mount` utility reads the attacker-controlled `LIBMOUNT_FORCE_MOUNT2` environment variable with `getenv()`, allowing a local low-privil…
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High 7.0CVE-2026-53613 Public exploit
util-linux mount target TOCTOU allows local privilege escalation
util-linux is a random collection of Linux utilities. In util-linux 2.17 through 2.41.6 and 2.42 through 2.42.3, and in 2.42.4 when the legacy `mount(2)` path is used without `/proc`, restricted non-root `mount` requests validate an `/etc/fstab` target before…
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High 7.0
util-linux mount hook_owner TOCTOU allows local privilege escalation
util-linux is a random collection of Linux utilities. In util-linux 2.39 through 2.41.4 and 2.42 through 2.42.1, the SUID `mount` utility's `hook_owner.c` post-mount hook performs path-based `chmod()` and `lchown()` operations on a previously validated mount …
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High 7.8
util-linux libmount Privilege Escalation via Failed Mount Helper
util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks, allowing unprivileged users to execute privileged operations on pre-existing filesystems. Attackers can exploit X-mount.idmap or X-mount.owne…
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High 7.0
Util-linux: util-linux: x-mount.subdir detached-tree resolution can escape via intermediate symlinks
The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to open_tree() with AT_SYMLINK_NOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted…
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High 7.8
Util-linux: util-linux: restricted bind mounts do not pin the source, allowing x-mount.owner/group/mode redirection
A flaw was found in util-linux. Restricted bind mounts take the source path from fstab but do not pin that source before the privileged mount. A local unprivileged user who can replace the authorized source or a writable ancestor can redirect SUID mount(8) to…
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High 7.9
Util-linux: util-linux: nsenter --join-cgroup leaks root cgroup migration authority
The nsenter --join-cgroup option opens the target cgroup.procs file as root and leaves that file descriptor open across later namespace and credential changes and across execve(). Because the kernel checks later cgroup migrations using the credentials from th…
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Medium 6.8
Util-linux: util-linux: heap use-after-free in libblkid nested partition probing
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 ad…
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Medium 4.7
util-linux: TOCTOU Race Condition in util-linux mount(8) - Loop Device Setup
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 …
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Low 3.7
Util-linux: util-linux: access control bypass due to improper hostname canonicalization
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 …
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Medium 6.1
Util-linux: util-linux: heap buffer overread in setpwnam() when processing 256-byte usernames
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.
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Low 3.3CVE-2024-28085 Public exploit
wall in util-linux through 2.40, often installed with setgid tty permissions, allows escape sequences to be sent to oth…
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Unscored —
An issue was discovered in hwclock.13-v2.27 allows attackers to gain escalated privlidges or execute arbitrary commands…
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Medium 5.5
A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmou…
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Unscored —
A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmou…
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Unscored —
An integer overflow in util-linux through 2.37.1 can potentially cause a buffer overflow if an attacker were able to us…
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Unscored —
In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands…
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Unscored —
The parse_dos_extended function in partitions/dos.c in the libblkid library in util-linux allows physically proximate a…
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High 7.8
Blkid in util-linux before 2.26rc-1 allows local users to execute arbitrary code.
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Unscored —
runuser in util-linux allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes…
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Unscored —
(a) mount and (b) umount in util-linux 2.14.1, 2.17.2, and probably other versions allow local users to determine the e…