Linux Kernel Security Vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from ext4mbusepreallocated not handling rbtree traversals correctly, which could lead to overlapping preallocated...

CVE-2025-41696: Use of Hard-coded Credentials

An attacker can use an undocumented UART port on the PCB as a side-channel with the user hardcoded credentials obtained from CVE-2025-41692 to gain read access to parts of the filesystem of the device...

PT-2025-49815

Name of the Vulnerable Software and Affected Versions The product name cannot be determined affected versions not specified Description An attacker can utilize an undocumented UART Universal Asynchronous Receiver-Transmitter, a hardware communication protocol port on the PCB as a side-channel. By...

Phoenix Contact FL SWITCH Trust Management Vulnerability

The PHOENIX CONTACT FL SWITCH is an industrial grade Ethernet switch from PHOENIX CONTACT, Germany. A trust management issue vulnerability exists in Phoenix Contact FL SWITCH versions prior to 3.50, which stems from undocumented UART ports and hardcoded credentials that could result in a partial...

PT-2025-49699

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel related to ext4 filesystem handling of extended attributes xattrs. A deadlock situation can occur during manipulation of xattr blocks due to mbcache ent...

Linux Kernel Security Vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from a corrupted ext4 filesystem mbcache entry, which could lead to a deadlock...

Qnap QTS and QuTS hero Path Traversal (CVE-2025-30271)

A path traversal vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following...

PT-2025-49726

In the Linux kernel, the following vulnerability has been resolved: ext4: don't clear SB RDONLY when remounting r/w until quota is re-enabled When a file system currently mounted read/only is remounted read/write, if we clear the SB RDONLY flag too early, before the quota is initialized, and ther...

CVE-2025-40312

In the Linux kernel, the following vulnerability has been resolved: jfs: Verify inode mode when loading from disk The inode mode loaded from corrupted disk can be invalid. Do like what commit 0a9e74051313 "isofs: Verify inode mode when loading from disk" does...

CVE-2025-27020

Improper configuration of the SSH service in Infinera MTC-9 allows an unauthenticated attacker to execute arbitrary commands and access data on file system . This issue affects MTC-9: from R22.1.1.0275 before R23.0...

CVE-2025-27020

CVE-2025-27020 affects Infinera MTC-9 due to an improper SSH service configuration. A misconfigured SSH implementation allows an unauthenticated attacker to execute arbitrary commands and read/write filesystem data over the network. Affected versions are R22.1.1.0275 up to, but not including, R23...

DEBIAN-CVE-2023-53766

In the Linux kernel, the following vulnerability has been resolved: FS: JFS: Check for read-only mounted filesystem in txBegin This patch adds a check for read-only mounted filesystem in txBegin before starting a transaction potentially saving from NULL pointer deref...

DEBIAN-CVE-2022-50622

In the Linux kernel, the following vulnerability has been resolved: ext4: fix potential memory leak in ext4fcrecordmodifiedinode As krealloc may return NULL, in this case 'state-fcmodifiedinodes' may not be freed by krealloc, but 'state-fcmodifiedinodes' already set NULL. Then will lead to...

CVE-2023-53766

In the Linux kernel, the following vulnerability has been resolved: FS: JFS: Check for read-only mounted filesystem in txBegin This patch adds a check for read-only mounted filesystem in txBegin before starting a transaction potentially saving from NULL pointer deref...

CVE-2023-53766 FS: JFS: Check for read-only mounted filesystem in txBegin

In the Linux kernel, the following vulnerability has been resolved: FS: JFS: Check for read-only mounted filesystem in txBegin This patch adds a check for read-only mounted filesystem in txBegin before starting a transaction potentially saving from NULL pointer deref...

CVE-2023-53766

CVE-2023-53766 relates to the Linux kernel, specifically the JFS filesystem. A patch adds a check in txBegin to verify a read-only mounted filesystem before starting a transaction, potentially preventing a NULL pointer dereference. The remediation is a kernel patch (Linux kernel, JFS code path) t...

UBUNTU-CVE-2025-40312

In the Linux kernel, the following vulnerability has been resolved: jfs: Verify inode mode when loading from disk The inode mode loaded from corrupted disk can be invalid. Do like what commit 0a9e74051313 "isofs: Verify inode mode when loading from disk" does...

CVE-2025-40312 jfs: Verify inode mode when loading from disk

In the Linux kernel, the following vulnerability has been resolved: jfs: Verify inode mode when loading from disk The inode mode loaded from corrupted disk can be invalid. Do like what commit 0a9e74051313 "isofs: Verify inode mode when loading from disk" does...

CVE-2025-40307

In the Linux kernel, the following vulnerability has been resolved: exfat: validate cluster allocation bits of the allocation bitmap syzbot created an exfat image with cluster bits not set for the allocation bitmap. exfat-fs reads and uses the allocation bitmap without checking this. The problem ...

CVE-2025-40303

In the Linux kernel, the following vulnerability has been resolved: btrfs: ensure no dirty metadata is written back for an fs with errors BUG During development of a minor feature make sure all btrfsbio::endio is called in task context, I noticed a crash in generic/388, where metadata writes...