CVE-2026-80881

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix buffer head management in ocfs2readblocks In ocfs2readblocks, caller should't assume that buffer head returned by 'sbgetblk' is exclusively owned and so 'putbh' always drops bcount from 1 to 0. If it is not so, buffer...

CVE-2026-80881

This Linux kernel vulnerability affects the OCFS2 (Oracle Cluster File System 2) filesystem in the ocfs2_read_blocks() function. The root cause is an incorrect assumption of exclusive ownership of buffer heads returned by sb_getblk(): when put_bh() does not drop the reference count to zero, the b...

EUVD-2026-71511

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix buffer head management in ocfs2readblocks In ocfs2readblocks, caller should't assume that buffer head returned by 'sbgetblk' is exclusively owned and so 'putbh' always drops bcount from 1 to 0. If it is not so, buffer...

CVE-2026-80879

CVE-2026-80879 affects the OCFS2 filesystem in the Linux kernel. The vulnerability is a circular locking dependency involving three system inode locks: INODE_ALLOC_SYSTEM_INODE , EXTENT_ALLOC_SYSTEM_INODE , and ORPHAN_DIR_SYSTEM_INODE . Specifically, ocfs2_dio_end_io_write() acquires EXTENT_ALLOC...

EUVD-2026-71509

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix circular locking dependency in ocfs2dioendiowrite A circular locking dependency involves INODEALLOCSYSTEMINODE, EXTENTALLOCSYSTEMINODE, and ORPHANDIRSYSTEMINODE. 1. ocfs2mknod acquires INODEALLOC then EXTENTALLOC. 2...

CVE-2026-80879

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix circular locking dependency in ocfs2dioendiowrite A circular locking dependency involves INODEALLOCSYSTEMINODE, EXTENTALLOCSYSTEMINODE, and ORPHANDIRSYSTEMINODE. 1. ocfs2mknod acquires INODEALLOC then EXTENTALLOC. 2...

CVE-2026-80809

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix missing metadata reservation for large xattrs BUG lsetxattr panics the kernel when setting a large xattr value on a fragmented filesystem where the file already has an external xattr block. CAUSE ocfs2calcxattrsetneed...

EUVD-2026-71244

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix missing metadata reservation for large xattrs BUG lsetxattr panics the kernel when setting a large xattr value on a fragmented filesystem where the file already has an external xattr block. CAUSE ocfs2calcxattrsetneed...

CVE-2026-80809

CVE-2026-80809 affects the Linux kernel's ocfs2 filesystem . The root cause is that ocfs2_calc_xattr_set_need() fails to reserve metadata blocks for a new xattr value's extent tree when the file already has an external xattr block, leaving meta_ac as NULL. On a fragmented filesystem , this causes...

CVE-2026-80644

A flaw was found in ocfs2, a component of the Linux kernel. A local attacker could exploit this vulnerability by providing a specially crafted OCFS2 image. When this fuzzed image is mounted, it can corrupt the journal dinode. This corruption leads to a kernel crash, resulting in a Denial of Servi...

CVE-2026-80638

A flaw was found in the ocfs2 component of the Linux kernel. When a user unlinks a refcounted file whose refcount tree has leaf blocks, an out-of-bounds write occurs within the ocfs2removerefcountextent function. This happens because a memset operation writes past the intended memory boundary due...

Linux Distros Unpatched Vulnerability : CVE-2026-80638

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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 ...

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-2026-80638

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...

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-2026-80638

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...

UBUNTU-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...

UBUNTU-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 ocfs2: don't BUG_ON an invalid journal dinode

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...

EUVD-2026-67520

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...