A vulnerability in the Linux kernel's namespace handling has been resolved. The issue involves the may_copy_tree() function accepting mounts whose roots are nsfs or pidfs files before verifying if the mount is actually mounted. This allowed recursive copying of unmounted mount trees, which is unintended behavior. The fix prevents walking an unmounted tree during recursive copy operations, causing such attempts to fail with EINVAL. Bind mounting a namespace that is gone remains possible if pinned by a file descriptor.
A vulnerability in the Linux kernel related to namespace handling and unmounting submounts has been resolved. The issue involves the unmounting process where busy mounts may be incorrectly unmounted due to improper reference checks, potentially leading to mounts being marked as synchronously unmounted while still in use. This affects mounts with the MNT_SHRINKABLE flag, such as automounted submounts of NFS, AFS, CIFS, and certain debugfs mounts. The fix ensures that each mount is checked for references right before unmounting under appropriate locks to maintain correctness.
A vulnerability in the Linux kernel's mount namespace handling allows recursive bind mounts of mount namespace files, which can cause cycles and unlimited resource leaks. The issue arises because the kernel does not fully check for mount namespace loops when performing recursive bind mounts with MS_REC, allowing a process to create a bind-mount stack of mount namespace file descriptors that leaks kernel memory.
An integer overflow or wraparound vulnerability has been identified in GitLab version 3.0. This type of vulnerability can lead to unexpected behavior in software when integer calculations exceed their maximum value and wrap around, potentially causing security issues.
An integer overflow or wraparound vulnerability has been identified in GitLab version 3.0. This type of vulnerability involves improper handling of integer values, which can lead to unexpected behavior in software. No CVSS score or detailed technical impact information is provided. There is no indication of known exploits in the wild or available patches at this time.
A vulnerability identified as CVE-2026-112085 affects webpack-dev-server version 3.0, allowing cross-origin WebSocket access via proxied upgrades. This issue relates to improper handling of WebSocket upgrade requests that could enable unauthorized cross-origin access. No CVSS score is provided, and there is no indication of known exploits in the wild. No patch or remediation details are currently available.
A vulnerability identified as CVE-2026-111181 affects the body-parser component version 3.0, allowing a Denial of Service (DoS) attack via trailing bytes after a compressed request body. The issue relates to improper handling of compressed request bodies that contain extra trailing bytes, which can be exploited to disrupt service availability.
HAProxy versions before 3.4.6, including version 3.0, contain a vulnerability that allows a remote unauthenticated attacker to cause a denial of service by triggering a persistent worker-thread issue. The vulnerability is identified as CWE-835. No CVSS score or detailed technical exploitation information is provided. No known exploits are reported in the wild. There is no explicit vendor advisory or patch link available in the provided data.
A vulnerability in the Linux kernel's pivot_root() function involves improper checks of mount points before reading their parent mounts. The issue arises when new_root or the caller's root is a file descriptor to a mount that has been unmounted but still kept alive by the file descriptor, potentially leading to a use-after-free condition. The vulnerability causes a read operation on freed memory, resulting in a kernel bug detected by KASAN. The fix involves verifying that both mounts are in the caller's mount namespace before accessing their parents, preventing the unsafe read. All error paths return EINVAL, so no other side effects occur.
A vulnerability in the Linux kernel's dcache handling has been resolved. The issue involves improper handling of mountpoints on dentries that are being removed, allowing a bind mount of a directory being removed to be moved beneath an existing mount. This causes the mount to remain on the removed directory indefinitely, preventing its detachment. The flaw arises due to a race condition between detach_mounts() and d_delete(), where the victim dentry is still hashed and not properly locked during mount operations.
A vulnerability in the Linux kernel namespace handling was resolved involving the order of unhashing a dentry before detaching mounts on it. The issue allowed a race condition during unlink(), rmdir(), and rename() operations where the dentry remained hashed and visible between detach_mounts() and d_delete(), potentially exposing mount points that should have been hidden. This race window could be exploited by concurrent lookups to observe mounts that were supposed to be detached. The fix changes the order to unhash the dentry before detaching mounts, preventing lookups from seeing stale mount information.
A vulnerability in the Linux kernel's namei component allowed refwalk operations to reveal overmounted entries due to a race condition when a mountpoint was unlinked. This could cause a refwalk to expose underlying filesystem entries that should have been hidden. The issue was addressed by adding checks to detect dentries marked as unlinked during refwalk traversal, preventing exposure of detached mounts.
A vulnerability in the Linux kernel's namespace handling allowed automounts to be added below a mount that is not in the caller's mount namespace. This could lead to a kernel crash (general protection fault) due to a null pointer dereference when accessing certain filesystem layers via fanotify. The issue arises because an internal mount flag (MNT_NS_INTERNAL) was incorrectly treated as a valid mount namespace, causing unsafe operations. The flaw has been resolved by using a safer check that rejects unmounted and internal mounts, preventing the crash and restoring expected behavior.
A vulnerability in the Linux kernel related to namespace handling and locked mounts has been resolved. Locked mounts are designed to protect underlying files and directories from being revealed. The flaw allowed an unlocked ancestor mount to expire a locked mount beneath it, potentially exposing protected directories. The fix ensures that locked mounts are not expired independently but only as part of their parent mount, preventing the exposure of hidden files. Lazy unmounts still remove the entire mount tree including locked mounts. This vulnerability is addressed by changes to the expiry logic and mount locking behavior.
A vulnerability in the Linux kernel related to mount locking for automounts across user namespaces has been resolved. The issue involved improper locking of mounts when mounts are propagated across user namespaces, causing the host's mount to be locked instead of the child's copy. This could prevent the host from changing mount flags correctly. The fix ensures that the lock is applied to the mount in the namespace where the mount actually occurs, preserving correct mount flag management.
A vulnerability in the Linux kernel's XFS filesystem handling was resolved that involved improper management of reflink flags during file extent exchanges. The flaw caused reflink flags to be incorrectly transferred between files during certain extent exchange operations, potentially leading to data corruption due to writes occurring in place instead of copy-on-write. The fix stops exchanging reflink flags during these operations and ensures both inodes retain the flag as appropriate. The vulnerability affects the XFS_IOC_SWAPEXT operation as well, which was corrected by setting reflink flags on both inodes and ensuring copy-on-write forks exist. The reflink flags remain set until explicitly removed by specific operations.
A use-after-free (UaF) vulnerability in the Linux kernel's cgroup cpuset subsystem was resolved by avoiding direct access to a potentially stale pointer in the is_in_v2_mode() function. The fix introduces a new flag to safely indicate cpuset v2 mode, preventing unsafe memory access during cgroup filesystem rebind operations.
A vulnerability in the Linux kernel's gpio: exar driver was resolved by correcting the initialization order of an ID before registering its cleanup action. The issue involved improper handling of allocated IDs during failure in registering cleanup actions, potentially causing ID leaks and incorrect freeing of device IDs.
A vulnerability in the Linux kernel's drm/vc4 component involved a memory leak where the BO cache size list was not freed during teardown, leading to resource leakage on every unbind operation. This issue has been resolved by ensuring the size list is freed properly in vc4_bo_cache_destroy().
A vulnerability in the Linux kernel's net/sched subsystem was resolved that involved improper handling of unterminated algorithm names in the em_text module. The flaw allowed an out-of-bounds read and potential kernel memory disclosure when a 16-byte algorithm name without a NUL terminator was passed, causing the kernel to read adjacent memory and invoke a usermode helper with unintended data. The issue was fixed by rejecting attributes lacking a NUL terminator within the expected byte size.