Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ocfs2: dlmfs: Fixed error handling for userdlmdestroyLock. When userdlmdestroyLock fails, it does not clean up the flags it set before exiting. For the USERLOCKINTEARDOWN condition, if this function fails because the lock is...

Linux Distributed Kernel Mutex Manager Heap Buffer Overflow DoS

The vulnerability in the dlmmidcommscommitmhandle function within the fs/dlm/midcomms.c module, which supports the distributed kernel mutex manager in Linux, is related to the reuse of previously freed memory. Exploitation of this vulnerability may allow an attacker to compromise the...

dlm_posix_lock() Kernel Level Access

The vulnerability of the dlmposixlock function in the fs/dlm/plock.c module, which supports Linux kernel-based distributed locking mechanisms, is related to reading beyond the buffer boundaries. Exploiting this vulnerability could allow an attacker to access protected information or cause service...

fs/dlm/lowcomms.c Heap Buffer Overflow DoS

The vulnerabilities of the functions dlmlowcommsnewmsg and dlmlowcommscommitmsg in the fs/dlm/lowcomms.c module are related to errors during the update of the reference counter in Linux’s distributed locking mechanism. Exploiting these vulnerabilities can allow an attacker to cause service failur...

Linux kernel Distributed Locking Manager Buffer Overflow DoS

The vulnerability of the newlockspace function in the fs/dlm/lockspace.c module, which is part of the Linux kernel’s distributed locking manager support, relates to the pointer dereferencing. Exploiting this vulnerability could allow an attacker to trigger a service failure...