CVE-2026-43215

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix locking usage for tcon fields We used to use the cifstcpseslock to protect a lot of objects that are not just the server, ses or tcon lists. We later introduced srvlock, seslock and tclock to protect fields within the...

CVE-2026-43215

The CVE-2026-43215 issue affects the Linux kernel CIFS implementation: the code used cifs_tcp_ses_lock to guard tcon fields, but this lock protected more than intended. The patch introduces more granular locking (tc_lock) within tcon-related structures (in addition to srv_lock and ses_lock) to re...

PT-2026-37533

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A reference count leak occurs in the nfsd get dir deleg function within the nfsd component. Specifically, the reference to the fp variable is not properly released before the function...

Linux Kernel Security Vulnerabilities

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the nfsdgetdirdeleg function in nfsd not releasing the nfs4file reference, potentially leading to...

kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache

A flaw was found in the Linux kernel's NFSv4.0 server nfsd. A remote, unauthenticated attacker can exploit this heap overflow vulnerability in the NFSv4.0 LOCK replay cache. By using two cooperating NFSv4.0 clients, where one sets a lock with a large owner string and another requests a conflictin...

kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache

A flaw was found in the Linux kernel's NFSv4.0 server nfsd. A remote, unauthenticated attacker can exploit this heap overflow vulnerability in the NFSv4.0 LOCK replay cache. By using two cooperating NFSv4.0 clients, where one sets a lock with a large owner string and another requests a conflictin...

AlmaLinux 8 : kernel-rt (ALSA-2026:13578)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:13578 advisory. kernel: nvme: avoid double free special payload CVE-2024-41073 kernel: net: qlogic/qede: fix potential out-of-bounds read in qedetpacont and qedetpaend...

kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache

A flaw was found in the Linux kernel's NFSv4.0 server nfsd. A remote, unauthenticated attacker can exploit this heap overflow vulnerability in the NFSv4.0 LOCK replay cache. By using two cooperating NFSv4.0 clients, where one sets a lock with a large owner string and another requests a conflictin...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

CVE-2026-31709

In the Linux kernel, the following vulnerability has been resolved: smb: client: validate the whole DACL before rewriting it in cifsacl buildsecdesc and idmodetocifsacl derive a DACL pointer from a server-supplied dacloffset and then use the incoming ACL to rebuild the chmod/chown security...

CVE-2026-31693 cifs: some missing initializations on replay

In the Linux kernel, the following vulnerability has been resolved: cifs: some missing initializations on replay In several places in the code, we have a label to signify the start of the code where a request can be replayed if necessary. However, some of these places were missing the necessary...

Linux kernel NFS Buffer Overflow DoS

The vulnerability of the nfsdinitdirlistpages function in the fs/nfsd/nfsproc.c module, which is part of the Linux kernel’s Network File System support, involves copying buffers without checking their size—a classic buffer overflow attack. Exploiting this vulnerability could allow an attacker to...

Moderate: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

USN-8180-5 linux-ibm, linux-ibm-5.15 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: - ARM64 architecture; - Block layer subsystem; - Drivers core; - Bluetooth drivers; - DMA engine subsystem; - GPU...

Linux kernel NFSD DoS

The vulnerability of the NFSD component in the Linux operating system’s kernel is related to the dereferencing of a pointer whose expiration time has expired. Exploiting this vulnerability can allow an attacker to trigger a service failure...

kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache

A flaw was found in the Linux kernel's NFSv4.0 server nfsd. A remote, unauthenticated attacker can exploit this heap overflow vulnerability in the NFSv4.0 LOCK replay cache. By using two cooperating NFSv4.0 clients, where one sets a lock with a large owner string and another requests a conflictin...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013709)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013709 advisory. In the Linux kernel, the following vulnerability has been resolved: NFS: Fix a potential data corruption We must ensure that the subrequests are joined back into the...

Linux Kernel Security Vulnerabilities

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the netfs mechanism’s issue during retries when reading abandoned files. This issue may lead to...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-013008)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013008 advisory. In the Linux kernel, the following vulnerability has been resolved: smb: client: fix memory leak in cifsconstructtcon When having a multiuser mount with domain=...

Unity Linux 20.1050e / 20.1070e Security Update: kernel (UTSA-2026-010974)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010974 advisory. In the Linux kernel, the following vulnerability has been resolved: NFSD: free copynotify stateid in nfs4freeolstateid Typically copynotify stateid is freed either...