CLSA-2024-1727817133 Fix of 73 CVEs

CVE-url: https://ubuntu.com/security/CVE-2024-26752 - l2tp: pass correct message length to ip6appenddata CVE-url: https://ubuntu.com/security/CVE-2021-47188 - scsi: ufs: core: Improve SCSI abort handling CVE-url: https://ubuntu.com/security/CVE-2024-26677 - rxrpc: Fix delayed ACKs to not set the...

Astra Linux – vulnerability in linux-6.1, linux-6.12

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...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed an issue where inode lists were leaked during backref walking in findparentnodes. During backref walking, when findparentnodes is called, if we are dealing with a data extent and an error occurs while resolving...

Astra Linux – vulnerability in linux-5.10, linux-5.15, linux

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix resolving backrefs for inline extent followed by prealloc If a file consists of an inline extent followed by a regular or prealloc extent, then a legitimate attempt to resolve a logical address in the non-inline region...

CVE-2026-90264

A flaw was found in the Linux kernel's btrfs filesystem. A race condition can occur when direct I/O operations complete prematurely, causing the system to fail to properly wait for existing ordered extents OEs to be cleared. This can lead to conflicting OEs for the same data range. A local attack...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: The BUG function call has been removed after failing to insert a delayed directory index entry. Instead of calling BUG when we fail to insert a delayed directory index entry into the delayed node’s tree, we can simply...

Astra Linux – Vulnerability in Linux 5.10

A flaw was discovered in btrfsgetrootref in fs/btrfs/disk-io.c within the btrfs filesystem of the Linux kernel, due to a double decrement of the reference count. This issue may allow a local attacker with user privileges to crash the system or may lead to the leakage of internal kernel informatio...

Astra Linux – Vulnerability in Linux 5.15

The following vulnerability has been resolved in the Linux kernel: btrfs: fixed an issue with the tree mod log handling of reallocated nodes. We have observed the following panics in production: - Kernel bug at fs/btrfs/tree-mod-log.c:677! - Invalid opcode: 0000 1 SMP - RIP:...

EUVD-2026-76557

In the Linux kernel, the following vulnerability has been resolved: btrfs: drop recovered reloc root refs on recovery failure During relocation recovery, each fs root gets a reference to its relocation root. If loading or adding a later root fails, or if the first transaction commit fails,...

CVE-2026-80631

A flaw was found in the Linux kernel's Btrfs filesystem, specifically within its LZO decompression functionality. A local attacker could provide a specially crafted Btrfs image containing a compressed segment that, due to improper validation of its length, overflows the compressed input buffer...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098893)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098893 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: only release the dirty pages io tree after successful writes WARNING With extra warning o...

CVE-2026-74722

A flaw was found in the Linux kernel's btrfs filesystem. A local attacker could exploit a memory leak in the btrfsdoencodedwrite function. This occurs because an extent changeset is not properly freed before the function returns. Successful exploitation of this memory leak could lead to a denial ...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: removed BUGON functions in addnewfreespace In addnewfreespace, there were BUGON functions designed to handle any failures in adding free space to the in-memory free space cache. Such failures are mostly due to ENOMEM,...

CVE-2026-74571

A flaw was found in the Linux kernel's btrfs filesystem. When mounting a btrfs filesystem with the rescue=ibadroots option after corrupting the block group tree root or raid stripe tree root, the system attempts to update the global block reserve. This process dereferences a missing root pointer,...

CVE-2026-74319

A flaw was found in the btrfs zoned filesystem within the Linux kernel. When performing data relocation, the system can enter a deadlock state. This happens because the relocation process waits for a space reservation ticket that cannot be fulfilled, as the relocation itself is the operation...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-101987)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-101987 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: reject root items with dropprogress and zero droplevel BUG When recovering relocation at...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-101964)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-101964 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: always detect conflicting inodes when logging inode refs After rename exchanging either...

CVE-2026-74321

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix invalid pointer dereference in btrfsrundelayedrefs In the beginning of the loop, we try to obtain a locked delayed ref head, if 'lockedref' is currently NULL, by calling btrfsselectrefhead, which can return an error...

CVE-2026-68442

A flaw was found in the btrfs filesystem component of the Linux kernel. When an extent map is split, a flag EXTENTFLAGLOGGING is incorrectly propagated to the new split maps. This issue occurs because the flag clearing operation was applied to the wrong variable during the splitting process...

CVE-2026-68450

A flaw was found in the Linux kernel's btrfs filesystem. When the addrelocroot function attempts to insert a duplicate mapping node into the relocroottree, the newly allocated node is not properly freed. This oversight can lead to a memory leak, potentially causing resource exhaustion and a Denia...