Threats affecting pkg:cargo/coreutils

A TOCTOU race condition exists in the mv utility of uutils coreutils (CVE-2026-35354) affecting versions up to 0.8.0. This flaw occurs during cross-device moves where extended attribute preservation uses multiple path-based system calls, allowing a local attacker with write access to the directory to swap files between calls. This can cause the destination file to receive inconsistent security extended attributes such as SELinux labels or file capabilities. The vulnerability has a medium severity with a CVSS score of 4.7.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-6gcw-w7cp-94g9. This link is maintained to preserve external references. ### Original Description The comm utility in uutils coreutils silently corrupts data by performing lossy UTF-8 conversion on all output lines. The implementation uses String::from_utf8_lossy(), which replaces invalid UTF-8 byte sequences with the Unicode replacement character (U+FFFD). This behavior differs from GNU comm, which processes raw bytes and preserves the original input. This results in corrupted output when the utility is used to compare binary files or files using non-UTF-8 legacy encodings.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-239g-2685-54x3. This link is maintained to preserve external references. ### Original Description The install utility in uutils coreutils is vulnerable to a Time-of-Check to Time-of-Use (TOCTOU) race condition during file installation. The implementation unlinks an existing destination file and then recreates it using a path-based operation without the O_EXCL flag. A local attacker can exploit the window between the unlink and the subsequent creation to swap the path with a symbolic link, allowing them to redirect privileged writes to overwrite arbitrary system files.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wv33-5pxh-r7j7. This link is maintained to preserve external references. ### Original Description The cut utility in uutils coreutils incorrectly handles the -s (only-delimited) option when a newline character is specified as the delimiter. The implementation fails to verify the only_delimited flag in the cut_fields_newline_char_delim function, causing the utility to print non-delimited lines that should have been suppressed. This can lead to unexpected data being passed to downstream scripts that rely on strict output filtering.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-gwm6-q8ch-hcfr. This link is maintained to preserve external references. ### Original Description A Time-of-Check to Time-of-Use (TOCTOU) vulnerability exists in the install utility of uutils coreutils when using the -D flag. The command creates parent directories and subsequently performs a second path resolution to create the target file, neither of which is anchored to a directory file descriptor. An attacker with concurrent write access can replace a path component with a symbolic link between these operations, redirecting the privileged write to an arbitrary file system location.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-p6rv-2qpm-fwvg. This link is maintained to preserve external references. ### Original Description An argument parsing error in the kill utility of uutils coreutils incorrectly interprets kill -1 as a request to send the default signal (SIGTERM) to PID -1. Sending a signal to PID -1 causes the kernel to terminate all processes visible to the caller, potentially leading to a system crash or massive process termination. This differs from GNU coreutils, which correctly recognizes -1 as a signal number in this context and would instead report a missing PID argument.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-7cr3-h577-g38j. This link is maintained to preserve external references. ### Original Description A vulnerability in the rm utility of uutils coreutils allows a bypass of the --preserve-root protection. The implementation uses a path-string check rather than comparing device and inode numbers to identify the root directory. An attacker or accidental user can bypass this safeguard by using a symbolic link that resolves to the root directory (e.g., /tmp/rootlink -> /), potentially leading to the unintended recursive deletion of the entire root filesystem.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-mj6p-44ch-cq69. This link is maintained to preserve external references. ### Original Description The mkdir utility in uutils coreutils incorrectly applies permissions when using the -m flag by creating a directory with umask-derived permissions (typically 0755) before subsequently changing them to the requested mode via a separate chmod system call. In multi-user environments, this introduces a brief window where a directory intended to be private is accessible to other users, potentially leading to unauthorized data access.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-3wfc-mgpm-9rq6. This link is maintained to preserve external references. ### Original Description The comm utility in uutils coreutils incorrectly consumes data from non-regular file inputs before performing comparison operations. The are_files_identical function opens and reads from both input paths to compare content without first verifying if the paths refer to regular files. If an input path is a FIFO or a pipe, this pre-read operation drains the stream, leading to silent data loss before the actual comparison logic is executed. Additionally, the utility may hang indefinitely if it attempts to pre-read from infinite streams like /dev/zero.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-89p7-7cq3-hhr2. This link is maintained to preserve external references. ### Original Description A vulnerability in the rm utility of uutils coreutils allows the bypass of safeguard mechanisms intended to protect the current directory. While the utility correctly refuses to delete . or .., it fails to recognize equivalent paths with trailing slashes, such as ./ or .///. An accidental or malicious execution of rm -rf ./ results in the silent recursive deletion of all contents within the current directory. The command further obscures the data loss by reporting a misleading 'Invalid input' error, which may cause users to miss the critical window for data recovery.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-8vrf-r662-2w2v. This link is maintained to preserve external references. ### Original Description The cp utility in uutils coreutils, when performing recursive copies (-R), incorrectly treats character and block device nodes as stream sources rather than preserving them. Because the implementation reads bytes into regular files at the destination instead of using mknod, device semantics are destroyed (e.g., /dev/null becomes a regular file). This behavior can lead to runtime denial of service through disk exhaustion or process hangs when reading from unbounded device nodes.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-h444-6j9x-p8vh. This link is maintained to preserve external references. ### Original Description The mv utility in uutils coreutils improperly handles directory trees containing symbolic links during moves across filesystem boundaries. Instead of preserving symlinks, the implementation expands them, copying the linked targets as real files or directories at the destination. This can lead to resource exhaustion (disk space or time) if symlinks point to large external directories, unexpected duplication of sensitive data into unintended locations, or infinite recursion and repeated copying in the presence of symlink loops.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-w6xc-g9qj-vp32. This link is maintained to preserve external references. ### Original Description The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-p7h3-7q52-72w8. This link is maintained to preserve external references. ### Original Description The printenv utility in uutils coreutils fails to display environment variables containing invalid UTF-8 byte sequences. While POSIX permits arbitrary bytes in environment strings, the uutils implementation silently skips these entries rather than printing the raw bytes. This vulnerability allows malicious environment variables (e.g., adversarial LD_PRELOAD values) to evade inspection by administrators or security auditing tools, potentially allowing library injection or other environment-based attacks to go undetected.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-r9hw-mj3w-phcq. This link is maintained to preserve external references. ### Original Description The mknod utility in uutils coreutils fails to handle security labels atomically by creating device nodes before setting the SELinux context. If labeling fails, the utility attempts cleanup using std::fs::remove_dir, which cannot remove device nodes or FIFOs. This leaves mislabeled nodes behind with incorrect default contexts, potentially allowing unauthorized access to device nodes that should have been restricted by mandatory access controls.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-4c7q-4928-8445. This link is maintained to preserve external references. ### Original Description A vulnerability in the chmod utility of uutils coreutils allows users to bypass the --preserve-root safety mechanism. The implementation only validates if the target path is literally / and does not canonicalize the path. An attacker or accidental user can use path variants such as /../ or symbolic links to execute destructive recursive operations (e.g., chmod -R 000) on the entire root filesystem, leading to system-wide permission loss and potential complete system breakdown.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-2x2h-fw32-rq7v. This link is maintained to preserve external references. ### Original Description A flaw in the ChownExecutor used by uutils coreutils chown and chgrp causes the utilities to return an incorrect exit code during recursive operations. The final exit code is determined only by the last file processed. If the last operation succeeds, the command returns 0 even if earlier ownership or group changes failed due to permission errors. This can lead to security misconfigurations where administrative scripts incorrectly assume that ownership has been successfully transferred across a directory tree.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-4x34-chg5-mwjj. This link is maintained to preserve external references. ### Original Description The recursive mode (-R) of the chmod utility in uutils coreutils incorrectly handles exit codes when processing multiple files. The final return value is determined solely by the success or failure of the last file processed. This allows the command to return an exit code of 0 (success) even if errors were encountered on previous files, such as 'Operation not permitted'. Scripts relying on these exit codes may proceed under a false sense of success while sensitive files remain with restrictive or incorrect permissions.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-2w8r-9xj7-69j5. This link is maintained to preserve external references. ### Original Description The mktemp utility in uutils coreutils fails to properly handle an empty TMPDIR environment variable. Unlike GNU mktemp, which falls back to /tmp when TMPDIR is an empty string, the uutils implementation treats the empty string as a valid path. This causes temporary files to be created in the current working directory (CWD) instead of the intended secure temporary directory. If the CWD is more permissive or accessible to other users than /tmp, it may lead to unintended information disclosure or unauthorized access to temporary data.

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-pmf6-rcx4-v53v. This link is maintained to preserve external references. ### Original Description A vulnerability in uutils coreutils mkfifo allows for the unauthorized modification of permissions on existing files. When mkfifo fails to create a FIFO because a file already exists at the target path, it fails to terminate the operation for that path and continues to execute a follow-up set_permissions call. This results in the existing file's permissions being changed to the default mode (often 644 after umask), potentially exposing sensitive files such as SSH private keys to other users on the system.