Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: rejecting a zero filehandle-version count The fflayoutalloclseg function decodes the count of the filehandle-version array from the flexfiles layout body. This value is used as the count for kzallocobjs, and the...

Linux Distros Unpatched Vulnerability : CVE-2026-90149

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers flexfiles accepts NFSv4.0 data servers, but two NFSv4 code paths assume the data server client ha...

DEBIAN-CVE-2026-90149

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers flexfiles accepts NFSv4.0 data servers, but two NFSv4 code paths assume the data server client has a session. Unlike NFSv4.1+, an NFSv4.0 client has no session...

CVE-2026-90149

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers flexfiles accepts NFSv4.0 data servers, but two NFSv4 code paths assume the data server client has a session. Unlike NFSv4.1+, an NFSv4.0 client has no session...

AZL-102438 CVE-2026-90149 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers flexfiles accepts NFSv4.0 data servers, but two NFSv4 code paths assume the data server client has a session. Unlike NFSv4.1+, an NFSv4.0 client has no session...

CVE-2026-90149 NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers flexfiles accepts NFSv4.0 data servers, but two NFSv4 code paths assume the data server client has a session. Unlike NFSv4.1+, an NFSv4.0 client has no session...

CVE-2026-90149 NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers flexfiles accepts NFSv4.0 data servers, but two NFSv4 code paths assume the data server client has a session. Unlike NFSv4.1+, an NFSv4.0 client has no session...

CVE-2026-90149

CVE-2026-90149 is a NULL pointer dereference in the Linux kernel's NFSv4/flexfiles subsystem. When a flexfiles mount uses an NFSv4.0 data server , two code paths incorrectly assume a session exists: nfs4_init_ds_session() dereferences clp->cl_session->session_state, and ff_layout_async_hand...

PT-2026-94497

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A NULL dereference issue exists in the NFSv4/flexfiles component when interacting with NFSv4.0 data servers. The system incorrectly assumes that the data server client has a session, whi...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-073364)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-073364 advisory. In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the...

kernel: NFSv4/flexfiles: reject zero filehandle version count

A flaw was found in the Linux kernel's NFSv4 Network File System version 4 flexfiles component. This vulnerability occurs when the fflayoutalloclseg function processes a malformed flexfiles layout that specifies a zero filehandle version count. An attacker could exploit this by providing a...

kernel: NFSv4/flexfiles: reject zero filehandle version count

A flaw was found in the Linux kernel's NFSv4 Network File System version 4 flexfiles component. This vulnerability occurs when the fflayoutalloclseg function processes a malformed flexfiles layout that specifies a zero filehandle version count. An attacker could exploit this by providing a...

kernel: NFSv4/flexfiles: reject zero filehandle version count

A flaw was found in the Linux kernel's NFSv4 Network File System version 4 flexfiles component. This vulnerability occurs when the fflayoutalloclseg function processes a malformed flexfiles layout that specifies a zero filehandle version count. An attacker could exploit this by providing a...

kernel: NFSv4/flexfiles: reject zero filehandle version count

A flaw was found in the Linux kernel's NFSv4 Network File System version 4 flexfiles component. This vulnerability occurs when the fflayoutalloclseg function processes a malformed flexfiles layout that specifies a zero filehandle version count. An attacker could exploit this by providing a...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098913)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098913 advisory. In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count CVE-2026-53392 In the Linux kernel, the following vulnerability has been resolved: nfsd: reset write verifier on deferred writeback errors CVE-2026-53393 In th...

AZL-92540 CVE-2026-53392 affecting package kernel for versions less than 6.6.145.2-1

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the filehandle-version array count from the flexfiles layout body. The value is used as the count for kzallocobjs, and the current code only rejects...

CVE-2026-53392: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the filehandle-version array count from the flexfiles layout body. The value is used as the count for kzallocobjs, and the current code only rejects...

CVE-2026-53392: NULL Pointer Dereference

In the Linux kernel, the following vulnerability has been resolved: NFSv4/flexfiles: reject zero filehandle version count fflayoutalloclseg decodes the filehandle-version array count from the flexfiles layout body. The value is used as the count for kzallocobjs, and the current code only rejects...

Linux Kernel Security Vulnerabilities

The Linux kernel has a security vulnerability. This vulnerability stems from the improper handling of the zero version count for file handles in NFSv4/flexfiles, which may lead to null pointer dereferencing...