CVE-2026-64519

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix infinite loop in layout state revocation findonesbstid skips stids whose scstatus is non-zero, but the SCTYPELAYOUT case in nfsd4revokestates never sets scstatus before calling nfsd4closelayout. The retry loop therefore...

CVE-2026-53393

A flaw was found in the Linux kernel's Network File System NFS daemon. This vulnerability occurs when the NFS daemon fails to reset the write verifier during deferred writeback errors for UNSTABLE writes. A remote attacker, acting as an NFS client, could exploit this by performing operations that...

CVE-2026-53396

A flaw was found in the Linux kernel's Network File System NFS daemon nfsd within the nfsd4createfile function. This vulnerability allows a remote attacker to cause a denial of service DoS by repeatedly triggering a memory leak of posixacl allocations. The leak occurs when a client attempts to...

SUSE CVE-2026-53398

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix SECINFONONAME decode error cleanup nfsd4decodesecinfononame currently initializes sinexp after decoding sinstyle. If the XDR stream is truncated, the decoder returns nfserrbadxdr before sinexp is initialized. Since comm...

CVE-2026-53398

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix SECINFONONAME decode error cleanup nfsd4decodesecinfononame currently initializes sinexp after decoding sinstyle. If the XDR stream is truncated, the decoder returns nfserrbadxdr before sinexp is initialized. Since comm...

CVE-2026-53396

CVE-2026-53396 (Linux kernel, NFSd) : The issue arises in nfsd4_create_file() where two ACL-handling bugs allow potential ACL leakage and incorrect behavior on CREATE. Specifically, the return value of nfsd4_acl_to_attr() is discarded, so failed ACL conversions (e.g., -EINVAL for unsupported ACE ...

CVE-2026-53394

CVE-2026-53394 describes a Linux kernel vulnerability in nfsd where pre-allocated openowner state is leaked during an unconfirmed retry race. The issue occurs in find_or_alloc_open_stateowner(): if an unconfirmed owner is encountered, the code frees the previous state only partially and then unco...

CVE-2026-53394 nfsd: avoid leaking pre-allocated openowner on unconfirmed retry race

In the Linux kernel, the following vulnerability has been resolved: nfsd: avoid leaking pre-allocated openowner on unconfirmed retry race When findorallocopenstateowner encounters an unconfirmed owner, it calls releaseopenowner and sets oo = NULL. Control then falls through past the if oo guard -...

CVE-2026-53393 nfsd: reset write verifier on deferred writeback errors

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 write verifier nn-writeverf when this check...

PT-2026-61098

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the Network File System server nfsd where the server fails to rotate the write verifier nn-writeverf when deferred writeback errors are detected via the filemap check ...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: nfsd: Do not ignore the return code of svcprocregister. Currently, nfsdprocstatinit ignores the return value of svcprocregister. If the creation of the procfile fails, the kernel will issue a WARN message when it attempts to remo...

SUSE CVE-2026-53026

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix nfs4file access extra count in nfsd4addrdaccesstowrdeleg In nfsd4addrdaccesstowrdeleg, if fp-fifdsORDONLY is already set by another thread, nfs4filegetaccess should not be called to increment the nfs4file access count...

SUSE SLES15 Security Update : kernel RT (Live Patch 11 for SUSE Linux Enterprise 15 SP7) (SUSE-SU-2026:2503-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2503-1 advisory. This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.37 fixes various security issues The following security issues were fixed: -...

SUSE-SU-2026:2592-1 Security update for the Linux Kernel (Live Patch 79 for SUSE Linux Enterprise 12 SP5)

This update for the SUSE Linux Enterprise Kernel 4.12.14-122.299 fixes various security issues The following security issues were fixed: - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache bsc1261640. - CVE-2026-31504: net: fix fanout UAF in packetrelease via NETDEVUP race...

SUSE-SU-2026:2500-1 Security update for the Linux Kernel RT (Live Patch 8 for SUSE Linux Enterprise 15 SP7)

This update for the SUSE Linux Enterprise Kernel 6.4.0-150700.7.28 fixes various security issues The following security issues were fixed: - CVE-2026-23278: netfilter: nftables: always walk all pending catchall elements bsc1260907. - CVE-2026-31402: nfsd: fix heap overflow in NFSv4.0 LOCK replay...

Astra Linux – Vulnerability in Linux 5.15

The Linux kernel’s NFSD implementation before versions 5.19.17 and 6.0.2 is vulnerable to buffer overflow attacks. NFSD tracks the number of pages held by each NFSD thread by combining the receive and send buffers of a remote procedure call RPC into a single array of pages. A client can force the...

EUVD-2026-32268

In the Linux kernel, the following vulnerability has been resolved: nfsd: never defer requests during idmap lookup During v4 request compound arg decoding, some ops e.g. SETATTR can trigger idmap lookup upcalls. When those upcall responses get delayed beyond the allowed time limit, cachecheck wil...

Linux kernel 安全漏洞

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 nfsd’s improper handling of request delays during the idmap search process. This issue may cause...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fixed an UAF in svctcplistendataready After the listener svcsock is freed, and before invoking svctcpaccept for the established child sock, there is a window during which the newsock may retain the freed listener svcsock ...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: nfsd: Fixed the startup race issue with nsfd again. The commit bd5ae9288d64 "nfsd: register pernet ops last, unregister first" re-opened the race in rpcpipefsevent, which was related to the registration of nfsdnetid using...