CVE-2026-80644

In the Linux kernel, the following vulnerability has been resolved: ocfs2: don't BUGON an invalid journal dinode BUG A fuzzed OCFS2 image can corrupt the current slot journal dinode while mount is still in progress. The mount path first reports the invalid journal block and then crashes in...

CVE-2026-80644

CVE-2026-80644 affects the OCFS2 filesystem in the Linux kernel. A commit (10995aa2451a) replaced a -EIO return in ocfs2_journal_toggle_dirty() with a BUG_ON(), assuming the journal dinode was already validated. A fuzzed OCFS2 image can corrupt the current slot journal dinode while mount is in pr...

CVE-2026-80638

CVE-2026-80638 is an out-of-bounds write in the Linux kernel's ocfs2 filesystem module, specifically in ocfs2_remove_refcount_extent(). When the last leaf block is removed from a refcount tree, a bulk memset on &rb->rf_records executes while rl_count is 0 (since rf_list.l_tree_depth aliases rf...

CVE-2026-80638 ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix out-of-bounds write in ocfs2removerefcountextent BUG Unlinking a refcounted file whose refcount tree has leaf blocks triggers a fortify panic due to an out-of-bounds write. CAUSE When the last leaf block is removed fro...

CVE-2026-80638 ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix out-of-bounds write in ocfs2removerefcountextent BUG Unlinking a refcounted file whose refcount tree has leaf blocks triggers a fortify panic due to an out-of-bounds write. CAUSE When the last leaf block is removed fro...

EUVD-2026-67514

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix out-of-bounds write in ocfs2removerefcountextent BUG Unlinking a refcounted file whose refcount tree has leaf blocks triggers a fortify panic due to an out-of-bounds write. CAUSE When the last leaf block is removed fro...

CVE-2026-80638

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix out-of-bounds write in ocfs2removerefcountextent BUG Unlinking a refcounted file whose refcount tree has leaf blocks triggers a fortify panic due to an out-of-bounds write. CAUSE When the last leaf block is removed fro...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098695)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098695 advisory. In the Linux kernel, the following vulnerability has been resolved: ocfs2: validate ltreedepth to avoid out-of-bounds access The ltreedepth field is 16-bit le16, but...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098707)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098707 advisory. In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix out-of-bounds write in ocfs2writeendinline KASAN reports a use-after-free write of 408...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098817)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098817 advisory. In the Linux kernel, the following vulnerability has been resolved: ocfs2: split transactions in dio completion to avoid credit exhaustion During ocfs2 dio operation...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: ocfs2: Fixed data corruption caused by fallocate. When fallocate creates holes in the inode size, if the original size is located in the middle of the last cluster, then the portion of the block from the original size to the end ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fixed a race condition between searching chunks and releasing the journalhead from the bufferhead. A race condition was encountered between ocfs2testbgbitallocatable and jbd2journalputjournalhead, resulting in the followin...

USN-8644-2: Linux kernel (GCP) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - File systems infrastructure; - OCFS2 file system; - B.A.T.M.A.N. meshing protocol; - SCTP protocol; - TIPC protocol...

USN-8646-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - OCFS2 file system; - B.A.T.M.A.N. meshing protocol; - Netfilter; - SCTP protocol; CVE-2026-52914, CVE-2026-53002,...

USN-8646-1 linux vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - OCFS2 file system; - B.A.T.M.A.N. meshing protocol; - Netfilter; - SCTP protocol; CVE-2026-52914, CVE-2026-53002,...

USN-8644-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - File systems infrastructure; - OCFS2 file system; - B.A.T.M.A.N. meshing protocol; - SCTP protocol; - TIPC protocol...

CVE-2026-72159

A flaw was found in the OCFS2 file system within the Linux kernel. This vulnerability occurs when processing specially crafted file system metadata, specifically non-inline dinodes that report a non-zero file size but zero allocated clusters. An attacker could potentially create a malformed file...

CVE-2026-72164

A flaw was found in the ocfs2 component of the Linux kernel. A local user can exploit a vulnerability in the ocfs2moveextent function when performing OCFS2IOCMOVEEXT operations. This issue allows file data to be copied into a disk cluster that is already occupied by another file, leading to data...

CVE-2026-72162

A flaw was found in ocfs2, a component of the Linux kernel. On-disk corruption of an inode's embedded extent list can lead to an array-index-out-of-bounds error. This occurs when the lnextfreerec value is zero or exceeds lcount during a write operation to the affected file. A local attacker with...

CVE-2026-72161

A flaw was found in the ocfs2 component of the Linux kernel. A local user could trigger a NULL pointer dereference during the unmount process of an ocfs2 filesystem. This occurs because the system attempts to access a freed journal pointer, leading to a system crash and a Denial of Service DoS...