USN-8033-5: 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: - Nios II architecture; - Sun Sparc architecture; - User-Mode Linux UML; - x86 architecture; - Block layer subsystem;...

Linux Distros Unpatched Vulnerability : CVE-2026-23147

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - btrfs: zlib: fix the folio leak on S390 hardware acceleration BUG After commit aa60fe12b4f4 btrfs: zlib: refactor S390x HW acceleration buffer preparation, we n...

CVE-2026-23141

A flaw was found in the Linux kernel's btrfs filesystem send functionality. In the rangeisholeinparent function, the code accesses the diskbytenr field of a file extent item without first checking if it is an inline extent. For inline extents, the data begins at the diskbytenr field offset, so...

CVE-2026-23147

A memory leak flaw was found in the Linux kernel's btrfs filesystem zlib compression code when using S390 hardware acceleration. Due to a missing folioput call in the copydataintobuffer function, page cache folios are not released after use during compression operations. This can lead to gradual...

SUSE CVE-2026-23141

In the Linux kernel, the following vulnerability has been resolved: btrfs: send: check for inline extents in rangeisholeinparent Before accessing the diskbytenr field of a file extent item we need to check if we are dealing with an inline extent. This is because for inline extents their data star...

SUSE CVE-2026-23147

In the Linux kernel, the following vulnerability has been resolved: btrfs: zlib: fix the folio leak on S390 hardware acceleration BUG After commit aa60fe12b4f4 "btrfs: zlib: refactor S390x HW acceleration buffer preparation", we no longer release the folio of the page cache of folio returned by...

SUSE CVE-2026-23157

In the Linux kernel, the following vulnerability has been resolved: btrfs: do not strictly require dirty metadata threshold for metadata writepages BUG There is an internal report that over 1000 processes are waiting at the ioscheduletimeout of balancedirtypages, causing a system hang and trigger...

SUSE CVE-2026-23181

In the Linux kernel, the following vulnerability has been resolved: btrfs: sync read disk super and set block size When the user performs a btrfs mount, the block device is not set correctly. The user sets the block size of the block device to 0x4000 by executing the BLKBSZSET command. Since the...

CVE-2026-23181

In the Linux kernel, the following vulnerability has been resolved: btrfs: sync read disk super and set block size When the user performs a btrfs mount, the block device is not set correctly. The user sets the block size of the block device to 0x4000 by executing the BLKBSZSET command. Since the...

CVE-2026-23181

In the Linux kernel, the following vulnerability has been resolved: btrfs: sync read disk super and set block size When the user performs a btrfs mount, the block device is not set correctly. The user sets the block size of the block device to 0x4000 by executing the BLKBSZSET command. Since the...

UBUNTU-CVE-2026-23181

In the Linux kernel, the following vulnerability has been resolved: btrfs: sync read disk super and set block size When the user performs a btrfs mount, the block device is not set correctly. The user sets the block size of the block device to 0x4000 by executing the BLKBSZSET command. Since the...

CVE-2026-23181

In the Linux kernel, the following vulnerability has been resolved: btrfs: sync read disk super and set block size When the user performs a btrfs mount, the block device is not set correctly. The user sets the block size of the block device to 0x4000 by executing the BLKBSZSET command. Since the...

CVE-2026-23181

In CVE-2026-23181, the Linux kernel btrfs read path can trigger inconsistent folio ordering when a block size change via BLKBSZSET occurs after folio allocation during read cache operations, leading to a VM_BUG_ON_FOLIO assertion and a null pointer dereference in create_empty_buffers. The documen...

CVE-2026-23181 btrfs: sync read disk super and set block size

In the Linux kernel, the following vulnerability has been resolved: btrfs: sync read disk super and set block size When the user performs a btrfs mount, the block device is not set correctly. The user sets the block size of the block device to 0x4000 by executing the BLKBSZSET command. Since the...

CVE-2026-23181

In the Linux kernel, the following vulnerability has been resolved: btrfs: sync read disk super and set block size When the user performs a btrfs mount, the block device is not set correctly. The user sets the block size of the block device to 0x4000 by executing the BLKBSZSET command. Since the...

CVE-2026-23181 btrfs: sync read disk super and set block size

In the Linux kernel, the following vulnerability has been resolved: btrfs: sync read disk super and set block size When the user performs a btrfs mount, the block device is not set correctly. The user sets the block size of the block device to 0x4000 by executing the BLKBSZSET command. Since the...

CVE-2026-23157

In the Linux kernel, the following vulnerability has been resolved: btrfs: do not strictly require dirty metadata threshold for metadata writepages BUG There is an internal report that over 1000 processes are waiting at the ioscheduletimeout of balancedirtypages, causing a system hang and trigger...

AZL-77820 CVE-2026-23157 affecting package kernel for versions less than 6.6.130.1-3

In the Linux kernel, the following vulnerability has been resolved: btrfs: do not strictly require dirty metadata threshold for metadata writepages BUG There is an internal report that over 1000 processes are waiting at the ioscheduletimeout of balancedirtypages, causing a system hang and trigger...

CVE-2026-23141

In the Linux kernel, the following vulnerability has been resolved: btrfs: send: check for inline extents in rangeisholeinparent Before accessing the diskbytenr field of a file extent item we need to check if we are dealing with an inline extent. This is because for inline extents their data star...

CVE-2026-23147

In the Linux kernel, the following vulnerability has been resolved: btrfs: zlib: fix the folio leak on S390 hardware acceleration BUG After commit aa60fe12b4f4 "btrfs: zlib: refactor S390x HW acceleration buffer preparation", we no longer release the folio of the page cache of folio returned by...