CVE Vulnerability Catalog

A vulnerability in the Linux kernel's net/sched sch_teql module involves missing synchronization of the teql master's slaves list, leading to race conditions and use-after-free (UAF) during concurrent queue operations. This can compromise memory integrity.

A use-after-free vulnerability was found in the Linux kernel's bridge subsystem related to STP. Missing IFF_UP check in br_topology_change_detection() allows arming the topology change timer while the bridge is administratively down, leading to use-after-free when the bridge is deleted.

In the Linux kernel's SCTP subsystem, a race condition was found in sctp_free_addr_wq() regarding the addr_wq_timer. Using timer_delete() does not guarantee that a currently running timer handler has completed, which can lead to use-after-free.

In the Linux kernel's ksmbd server, a vulnerability was found where undersized DACLs are not properly rejected before parsing ACEs. Due to an underflow in the calculation, a malicious client can bypass the ACE count limit and cause excessive memory allocations.

In the Linux kernel's xen/pvcalls driver, the request ID (req_id) from the backend is not validated before being used as an index into the rsp[] array. A malicious or buggy backend can set req_id out of bounds, leading to an out-of-bounds write. Additionally, the int type for req_id does not cover u32 values, allowing negative indexing.

In the Linux kernel, in afs_extract_vl_addrs(), error codes are only set on the first iteration of the loop. Subsequent iterations do not update them, which can lead to incorrect error reporting.

In the Linux kernel's AFS filesystem, initializing the work_struct lock_work only once in the slab init function is insufficient. This causes DEBUG_OBJECTS warnings and potential issues on reuse. The fix requires reinitialization after inode allocation and flush before eviction.

In the Linux kernel's AFS filesystem, callback service message parsers do not pass through -EAGAIN correctly. afs_extract_data() returns -EAGAIN, but it is inadvertently converted to 0, which can lead to incorrect processing.

In the Linux kernel's AFS filesystem, afs_break_some_callbacks() does not check if afs_lookup_volume_rcu() returned NULL (e.g., when the volume is unknown). This could lead to a NULL pointer dereference.

In the Linux kernel's AFS filesystem, there is a lack of locking around modifications of net->cells_dyn_ino. The fix requires taking net->cells_lock exclusively and moving the removal of the cell from net->cells_dyn_ino to afs_destroy_cell_work(), because afs_cell_destroy() runs in RCU cleanup context.

In the Linux kernel's AFS filesystem, afs_insert_volume_into_cell() sets the AFS_VOLUME_RM_TREE flag on the new volume instead of the replaced one. This causes the old volume to be removed from the tree twice and the new volume never to be removed.

In the Linux kernel Minix filesystem, minix_check_superblock() uses minix_blocks_needed() to verify bitmap block counts. The calculation uses unsigned int arithmetic, which can overflow when s_ninodes or s_zones is near UINT_MAX. This leads to accepting a zero bitmap block count, and then minix_fill_super() dereferences s_imap[0] or s_zmap[0], causing a kernel panic.

In the Linux kernel cachefiles module, the nomem_d_alloc error path in cachefiles_get_directory() has a double unlock. When start_creating() fails with -ENOMEM, it already releases the parent directory lock, but the error path calls inode_unlock() again, corrupting the rwsem state.

In the Linux kernel iomap code, when trimming io_size to EOF, an underflow can occur if end_pos is below ioend->io_offset. This causes io_size to wrap to a huge value, potentially leading to errors in write handling and data corruption.

In the Linux kernel netfs module, error handling in the writeback_iter() loop is incorrect. If an error occurs, writeback_iter() needs to be called again with the error set to clean up iteration state, and the current folio needs unlocking and redirtying.

In the Linux kernel, the drm/xe/pf driver was found to process FAST_REQ or EVENT messages, which can break the VF/PF ABI protocol and trigger an assert on the PF side. The fix prevents the PF from handling these message types.

In the Linux kernel, the drm/xe/pt driver has an issue with invalid cursor access for purged BOs. Functions xe_pt_hugepte_possible() and xe_pt_scan_64K() did not check if the BO was purged, leading to warnings and potential misbehavior.

In the Linux kernel, the uprobes mechanism for x86 has a bug where the wrong mm_struct is used in __in_uprobe_trampoline. In the unregister path, current->mm is used instead of the traced process's mm_struct, which is incorrect in the tracer context.

In the Linux kernel, the cifs module has a missing credit release in the failure path of cifs_issue_read(). This can lead to overwriting the credits value when retrying the subrequest, disrupting resource management.

In the Linux kernel, a use-after-free vulnerability was found in the NTFS filesystem's $MFT writeback path. The issue arises from dereferencing a runlist element pointer after releasing the lock, while concurrent $MFT allocation extension can free the underlying memory. This can lead to system crashes or potential code execution.