CVE-2026-89767

CVE-2026-89767 is a Linux kernel overlayfs vulnerability in ovl_create_real(). When the casefold consistency check fails during directory creation, end_creating() is called twice on the same dentry, causing a double unlock of the parent directory's i_rwsem and a double dput() . The second unlock ...

EUVD-2026-76679

In the Linux kernel, the following vulnerability has been resolved: ovl: fix double endcreating on the casefold-mismatch path ovlcreatereal releases the new dentry twice when the casefold consistency check fails. The SIFDIR branch calls endcreating and sets err, then falls through to the common...

CVE-2026-89767

In the Linux kernel, the following vulnerability has been resolved: ovl: fix double endcreating on the casefold-mismatch path ovlcreatereal releases the new dentry twice when the casefold consistency check fails. The SIFDIR branch calls endcreating and sets err, then falls through to the common...

CVE-2026-89767 ovl: fix double end_creating() on the casefold-mismatch path

In the Linux kernel, the following vulnerability has been resolved: ovl: fix double endcreating on the casefold-mismatch path ovlcreatereal releases the new dentry twice when the casefold consistency check fails. The SIFDIR branch calls endcreating and sets err, then falls through to the common...

CVE-2026-89767 ovl: fix double end_creating() on the casefold-mismatch path

In the Linux kernel, the following vulnerability has been resolved: ovl: fix double endcreating on the casefold-mismatch path ovlcreatereal releases the new dentry twice when the casefold consistency check fails. The SIFDIR branch calls endcreating and sets err, then falls through to the common...

CVE-2026-89560 landlock: Require LANDLOCK_ACCESS_FS_MAKE_REG for whiteout creation

In the Linux kernel, the following vulnerability has been resolved: landlock: Require LANDLOCKACCESSFSMAKEREG for whiteout creation Whiteout objects are used in the upper layer of an OverlayFS to indicate that the file with this name does not exist in the unified view, even if it is present in on...

CVE-2026-89560

In the Linux kernel, the following vulnerability has been resolved: landlock: Require LANDLOCKACCESSFSMAKEREG for whiteout creation Whiteout objects are used in the upper layer of an OverlayFS to indicate that the file with this name does not exist in the unified view, even if it is present in on...

CVE-2026-89560 landlock: Require LANDLOCK_ACCESS_FS_MAKE_REG for whiteout creation

In the Linux kernel, the following vulnerability has been resolved: landlock: Require LANDLOCKACCESSFSMAKEREG for whiteout creation Whiteout objects are used in the upper layer of an OverlayFS to indicate that the file with this name does not exist in the unified view, even if it is present in on...

EUVD-2026-76471

In the Linux kernel, the following vulnerability has been resolved: landlock: Require LANDLOCKACCESSFSMAKEREG for whiteout creation Whiteout objects are used in the upper layer of an OverlayFS to indicate that the file with this name does not exist in the unified view, even if it is present in on...

CVE-2026-89560

CVE-2026-89560 affects the Linux kernel Landlock security module , specifically the permission checks for whiteout object creation in the upper layer of OverlayFS (fuse-overlayfs). Two flaws exist: first, mknod(2) with S_IFCHR/makedev(0,0) was guarded by LANDLOCK_ACCESS_FS_MAKE_CHAR instead of th...

PT-2026-90483

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ovl create real function where a new dentry is released twice when a casefold consistency check fails. Specifically, in the S IFDIR branch, the end creating functi...

PT-2026-90276

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Landlock security module regarding the creation of whiteout objects in OverlayFS. Whiteout objects are used in the upper layer of an OverlayFS to indicate that a...

PT-2026-90484

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the backing file open function where the path stored in a new backing file is incorrectly derived from user file-f path. In nested stacking filesystems, such as...

PT-2026-96455

In the Linux kernel, the following vulnerability has been resolved: fs: fix user path of nested backing files backing file open derives the path to be stored in the new backing file from user file-f path. This is incorrect when user file itself is a backing file, which is the case for nested...

PT-2026-96538

In the Linux kernel, the following vulnerability has been resolved: landlock: Require LANDLOCK ACCESS FS MAKE REG for whiteout creation Whiteout objects are used in the upper layer of an OverlayFS to indicate that the file with this name does not exist in the unified view, even if it is present i...

CVE-2026-89768: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: fs: fix user path of nested backing files backingfileopen derives the path to be stored in the new backing file from userfile-fpath. This is incorrect when userfile itself is a backing file, which is the case for nested stacking...

CVE-2026-89560: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: landlock: Require LANDLOCKACCESSFSMAKEREG for whiteout creation Whiteout objects are used in the upper layer of an OverlayFS to indicate that the file with this name does not exist in the unified view, even if it is present in on...

openSUSE 16 Security Update : fuse-overlayfs (openSUSE-SU-2026:21753-1)

The remote openSUSE 16 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2026:21753-1 advisory. This update for fuse-overlayfs fixes the following issue: - CVE-2026-52791: privilege escalation due to SUID/SGID bit preservation after truncate...

Security update for fuse-overlayfs (moderate)

openSUSE security update: security update for fuse-overlayfs ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:21753-1 Rating: moderate References: bsc1273100 Cross-References: CVE-2026-52791 CVSS scores: CVE-2026-52791 SUSE : 4.7...

Security update for fuse-overlayfs

This update for fuse-overlayfs fixes the following issue: CVE-2026-52791: Privilege Escalation Vulnerability via SUID/SGID Bit Preservation bsc1273100. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper patch"...