PT-2026-90420

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the nfsd copy file range function where the dst-f wb err value is sampled into the since variable after the copy loop. Because the nfsd file cache reuses a single file...

PT-2026-96581

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsd copy file range samples dst-f wb err into "since" after the copy loop, then uses it to detect writeback errors via filemap check wb err once vfs fsync range returns...

CVE-2026-89704: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: nfsd: sample writeback error cursor before async COPY loop nfsdcopyfilerange samples dst-fwberr into "since" after the copy loop, then uses it to detect writeback errors via filemapcheckwberr once vfsfsyncrange returns. Because t...

K000163298: Linux kernel vulnerability CVE-2026-53397

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: nfsd: fix posixacl leak on SETACL decode failure nfsaclsvcdecodesetaclargs and nfs3svcdecodesetaclargs each call nfsstreamdecodeacl twice, first for NFSACL and then for NFSDFACL. Each successful call...

K000163276: Linux kernel vulnerability CVE-2026-53399

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease failure nfs4allocstid publishes the new stid into cl-clstateids via idralloccyclic under cllock before returning to nfsd4alloclayoutstateid. When...

K000163273: Linux kernel vulnerabilities CVE-2026-53393 and CVE-2026-53398

Security Advisory Description CVE-2026-53393 In the Linux kernel, the following vulnerability has been resolved: nfsd: reset write verifier on deferred writeback errors nfsdvfswrite and nfsdcommit both call filemapcheckwberr to detect deferred writeback errors, but neither rotates the server's...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-073365)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-073365 advisory. In the Linux kernel, the following vulnerability has been resolved: nfsd: release layout stid on setlease failure nfs4allocstid publishes the new stid into...

Unity Linux 20.1050e / 20.1060e Security Update: kernel (UTSA-2026-085343)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-085343 advisory. In the Linux kernel, the following vulnerability has been resolved: nfsd: under NFSv4.1, fix double svcxprtput on rpccreate failure On error situation...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053221)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053221 advisory. In the Linux kernel, the following vulnerability has been resolved: NFSD: Protect against send buffer overflow in NFSv2 READ Since before the git era, NFSD has...

Unity Linux 20.1050e / 20.1060e Security Update: kernel (UTSA-2026-081025)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-081025 advisory. In the Linux kernel, the following vulnerability has been resolved: NFSD: Define a proclayoutcommit for the FlexFiles layout type Avoid a crash if a pNFS client shou...

kernel: nfsd: release layout stid on setlease failure

A flaw was found in the Linux kernel's Network File System Daemon nfsd. When a setlease operation fails, the system prematurely releases a layout state identifier. An attacker could exploit this by triggering the failure, leading to a use-after-free vulnerability. This could result in a system...

kernel: nfsd: fix posix_acl leak on SETACL decode failure

A flaw was found in the Linux kernel's Network File System Daemon nfsd. This vulnerability occurs during the processing of Access Control List ACL set operations. If a specific decode step fails, a memory leak of a posixacl object occurs. This can lead to resource exhaustion over time, potentiall...

kernel: nfsd: release layout stid on setlease failure

A flaw was found in the Linux kernel's Network File System Daemon nfsd. When a setlease operation fails, the system prematurely releases a layout state identifier. An attacker could exploit this by triggering the failure, leading to a use-after-free vulnerability. This could result in a system...

kernel: nfsd: fix posix_acl leak on SETACL decode failure

A flaw was found in the Linux kernel's Network File System Daemon nfsd. This vulnerability occurs during the processing of Access Control List ACL set operations. If a specific decode step fails, a memory leak of a posixacl object occurs. This can lead to resource exhaustion over time, potentiall...

kernel: nfsd: release layout stid on setlease failure

A flaw was found in the Linux kernel's Network File System Daemon nfsd. When a setlease operation fails, the system prematurely releases a layout state identifier. An attacker could exploit this by triggering the failure, leading to a use-after-free vulnerability. This could result in a system...

kernel: nfsd: fix posix_acl leak on SETACL decode failure

A flaw was found in the Linux kernel's Network File System Daemon nfsd. This vulnerability occurs during the processing of Access Control List ACL set operations. If a specific decode step fails, a memory leak of a posixacl object occurs. This can lead to resource exhaustion over time, potentiall...

kernel: NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg

A flaw was found in the Linux kernel's Network File System Daemon NFSD. An issue with file access counting in the nfsd4addrdaccesstowrdeleg function can lead to an extra access count for nfs4file objects. This prevents the proper freeing of associated resources when the NFS server service is...

kernel: nfsd: release layout stid on setlease failure

A flaw was found in the Linux kernel's Network File System Daemon nfsd. When a setlease operation fails, the system prematurely releases a layout state identifier. An attacker could exploit this by triggering the failure, leading to a use-after-free vulnerability. This could result in a system...

kernel: nfsd: fix posix_acl leak on SETACL decode failure

A flaw was found in the Linux kernel's Network File System Daemon nfsd. This vulnerability occurs during the processing of Access Control List ACL set operations. If a specific decode step fails, a memory leak of a posixacl object occurs. This can lead to resource exhaustion over time, potentiall...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-001403)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-001403 advisory. In the Linux kernel, the following vulnerability has been resolved: nfsd: make sure exp active before svcexportshow The function eshow was called with protection fro...