CVE-2026-97610

A flaw was found in the Linux kernel's netfs network filesystem subsystem. A local user can cause a Denial of Service DoS or unexpected system behavior during synchronous unbuffered write operations on network filesystems, such as CIFS Common Internet File System. When an initial write preparatio...

CVE-2026-98120

A flaw was found in the Linux kernel's netfs network filesystem subsystem. A local user can cause a Denial of Service DoS by initiating specific unbuffered write operations on an affected filesystem. When a write subrequest encounters zero-length data during preparation, the kernel fails to relea...

DEBIAN-CVE-2026-98119

In the Linux kernel, the following vulnerability has been resolved: netfs: break unbuffered write when netfsallocsubrequest fails syzbot reported a null-ptr-deref below 1 following a fault injection in netfsallocsubrequest. 0 When netfsallocsubrequest fails, subreq is NULL. Later, netfspreparewri...

CVE-2026-98119

A flaw in the Linux kernel 's netfs (network filesystem) subsystem allows a local user to cause a Denial of Service (DoS) by triggering a system crash. The vulnerability occurs during unbuffered write operations under memory exhaustion conditions because the kernel fails to verify if memory alloc...

CVE-2026-98119 netfs: break unbuffered write when netfs_alloc_subrequest() fails

In the Linux kernel, the following vulnerability has been resolved: netfs: break unbuffered write when netfsallocsubrequest fails syzbot reported a null-ptr-deref below 1 following a fault injection in netfsallocsubrequest. 0 When netfsallocsubrequest fails, subreq is NULL. Later, netfspreparewri...

CVE-2026-98119

In the Linux kernel, the following vulnerability has been resolved: netfs: break unbuffered write when netfsallocsubrequest fails syzbot reported a null-ptr-deref below 1 following a fault injection in netfsallocsubrequest. 0 When netfsallocsubrequest fails, subreq is NULL. Later, netfspreparewri...

PT-2026-98782

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A reference leak occurs in the netfs unbuffered write function when the subreq-io iter variable results in zero length during the preparation phase. Recommendations At the moment, there ...

PT-2026-98781

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A null-pointer dereference occurs in the netfs component during unbuffered write operations. When the function netfs alloc subrequest fails, it returns a NULL value for the subreq...

PT-2026-98550

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the netfs component where the netfs unbuffered write function may exit its loop before the ret variable is initialized, which can occur if the first subrequest...

SUSE CVE-2026-31437

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix NULL pointer dereference in netfsunbufferedwrite on retry When a write subrequest is marked NETFSSREQNEEDRETRY, the retry path in netfsunbufferedwrite unconditionally calls stream-preparewrite without checking if it is...

CVE-2026-31437

A flaw was found in the Linux kernel's netfs component. When a write operation is retried, the netfsunbufferedwrite function can attempt to access a non-existent function, leading to a NULL pointer dereference. This vulnerability can be triggered by specific filesystem configurations, such as 9P,...

EUVD-2026-24762

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix NULL pointer dereference in netfsunbufferedwrite on retry When a write subrequest is marked NETFSSREQNEEDRETRY, the retry path in netfsunbufferedwrite unconditionally calls stream-preparewrite without checking if it is...

CVE-2026-31437

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix NULL pointer dereference in netfsunbufferedwrite on retry When a write subrequest is marked NETFSSREQNEEDRETRY, the retry path in netfsunbufferedwrite unconditionally calls stream-preparewrite without checking if it is...

CVE-2026-31437 netfs: Fix NULL pointer dereference in netfs_unbuffered_write() on retry

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix NULL pointer dereference in netfsunbufferedwrite on retry When a write subrequest is marked NETFSSREQNEEDRETRY, the retry path in netfsunbufferedwrite unconditionally calls stream-preparewrite without checking if it is...

CVE-2026-31437

The CVE-2026-31437 issue is in the Linux kernel netfs path: when a write subrequest is marked NETFS_SREQ_NEED_RETRY, netfs_unbuffered_write() could dereference stream->prepare_write if it is NULL (not all filesystems, e.g., 9P, set prepare_write). The fixed behavior mirrors write_retry.c: if s...

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 a null pointer dereferencing in the netfsunbufferedwrite retry path. This could lead to a failure...

PT-2026-34342

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A NULL pointer dereference occurs in the netfs unbuffered write function during a retry operation. When a write subrequest is marked NETFS SREQ NEED RETRY, the system calls stream-prepar...

Linux kernel Network File System Heap Buffer Overflow DoS

The vulnerability of the netfsunbufferedwriteiterlocked function in the fs/netfs/directwrite.c module, which is part of the Linux kernel’s network file system support, involves copying buffers without checking the size of the input data a classic buffer overflow attack. Exploiting this...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix for unbuffered write error handling If all the subrequests in an unbuffered write stream fail, the subrequest collector does not update the stream-transferred value, and it retains its initial LONGMAX value...

Linux Distros Unpatched Vulnerability : CVE-2025-39723

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - netfs: Fix unbuffered write error handling If all the subrequests in an unbuffered write stream fail, the subrequest collector doesn't update the...