OESA-2026-3705 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: ocfs2/dlm: fix off-by-one in dlmmatchregions region comparison The local-vs-remote region comparison loop uses '=' instead of '', causing it to read one entry pa...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: ocfs2: Fixed a slab-use-after-free issue caused by a dangling pointer dqipriv. When mounting ocfs2 and then remounting it as read-only, a slab-use-after-free occurs after the user uses the syscall to call ocfs2getnextid...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ocfs2: Prevent the release of journal inode after journal shutdown. Before calling ocfs2deleteosb, the function ocfs2journalshutdown has already been executed in ocfs2dismountvolume. Therefore, osb-journal must be NULL. As a...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ocfs2: The uncached inode fails to enter the group. Syzbot has reported the following BUG: Kernel BUG at fs/ocfs2/uptodate.c:509! … Call Trace: ? diebody+0x5f/0xb0 ? die+0x9e/0xc0 ? dotrap+0x15a/0x3a0 ?...

CVE-2026-89496

A flaw was found in ocfs2, the Oracle Cluster File System, within the Linux kernel. A local user could exploit this vulnerability by performing a copyfilerange operation within the same filesystem. This can lead to a memory leak, potentially causing resource exhaustion and a Denial of Service DoS...

Linux Distros Unpatched Vulnerability : CVE-2026-89491

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ocfs2: cluster: don't sleep while holding o2hblivelock in o2hbregionpin Patch series ocfs2: cluster: o2hbregionpin fixes, v2. This series fixes three related...

Linux Distros Unpatched Vulnerability : CVE-2026-89490

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ocfs2: fix readdir position truncation on 32-bit kernels In ocfs2dirforeachblkel, the directory cookie position is rebuilt with ctx-pos = ctx-pos & sb-sblocksiz...

Linux Distros Unpatched Vulnerability : CVE-2026-89495

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ocfs2: bound namelen in dlmmigraterequesthandler Patch series ocfs2/dlm: bound peer-controlled lengths in the o2dlm. The o2dlm receive handlers trust u8 length...

Linux Distros Unpatched Vulnerability : CVE-2026-89493

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ocfs2: validate rlused against rlcount in refcount block validator ocfs2findrefcountrecinrl walks the on-disk refcount record array with: for ; i...

Linux Distros Unpatched Vulnerability : CVE-2026-89492

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ocfs2: validate directory-index entry counts when reading metadata ocfs2validatedxleaf and ocfs2validatedxroot check the ECC and signature of an...

Linux Distros Unpatched Vulnerability : CVE-2026-89496

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ocfs2: always run deallocs on copy-on-write completion Local fuzzing of 6.12.94 has found the following memory leak caused by doing 'copyfilerange' within the...

Linux Distros Unpatched Vulnerability : CVE-2026-89494

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ocfs2: validate lengths in dlmmiglockreshandler A node receiving a DLMMIGLOCKRES message trusts several fields of the peer-supplied dlmmigratablelockres without...

CVE-2026-89492

A flaw was found in the Linux kernel's OCFS2 filesystem. A local attacker with the ability to mount a crafted on-disk image could exploit this vulnerability by providing excessive directory-index entry counts when reading metadata. This can lead to an out-of-bounds read, potentially causing...

CVE-2026-89491

A flaw was found in the Linux kernel's ocfs2 cluster module. This vulnerability allows a local attacker to trigger a denial of service. The issue arises when a sleeping function is called while a spinlock is held within the o2hbregionpin function, which can lead to a system crash or deadlock. Thi...

CVE-2026-89493

A flaw was found in the Linux kernel's ocfs2 component. A local attacker with CAPSYSADMIN privileges could exploit this by mounting a crafted or corrupted ocfs2 image, or by performing a raw write to the block device backing an already-mounted ocfs2 filesystem. This vulnerability arises from...

CVE-2026-89490

A flaw was found in ocfs2, the Oracle Cluster File System, within the Linux kernel. On 32-bit kernels, an error in how directory cookie positions are calculated can lead to truncation when a directory exceeds 4 Gigabytes GiB in size. This truncation causes the system to repeatedly re-enumerate...

CVE-2026-89495

A flaw was found in ocfs2 in the Linux kernel. A malicious or compromised node within a Distributed Lock Manager DLM cluster can send specially crafted messages with unchecked length fields. This can lead to a heap out-of-bounds write, potentially allowing for arbitrary code execution, or an...

CVE-2026-89494

A flaw was found in ocfs2, a component of the Linux kernel. A remote attacker, by sending a specially crafted Distributed Lock Manager DLM migration message, could exploit a lack of validation in the dlmmiglockreshandler. This flaw allows for an out-of-bounds write to the heap, potentially leadin...

AZL-100295 CVE-2026-89496 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: ocfs2: always run deallocs on copy-on-write completion Local fuzzing of 6.12.94 has found the following memory leak caused by doing 'copyfilerange' within the same filesystem: unreferenced object 0xffff88812192c980 size 32: comm...

AZL-100100 CVE-2026-89495 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: ocfs2: bound namelen in dlmmigraterequesthandler Patch series "ocfs2/dlm: bound peer-controlled lengths in the o2dlm". The o2dlm receive handlers trust u8 length and count fields from the wire without bounding them, so a node in ...