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...

USN-8490-1 linux, linux-aws, linux-aws-6.17, linux-gcp, linux-gcp-6.17, linux-oracle, linux-oracle-6.17, linux-realtime, linux-realtime-6.17 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; - Cryptographic API; - DMA engine subsystem; - InfiniBand drivers; -...

SUSE-SU-2026:2195-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP6 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2023-2058: x86/CPU: Fix FPDSS on Zen1 bsc1243603. - CVE-2025-54518: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache bsc1264013. -...

SUSE-SU-2026:22447-1 Security update for libnfs

This update for libnfs fixes the following issue - CVE-2026-53689: integer overflow during a connection to a crafted NFS server bsc1268135...

CVE-2026-57918

libnfs through 6.0.2 before 935b8db has an xid integer underflow in READIOVEC in rpcreadfromsocket in lib/socket.c during a connection to a crafted NFS server, when the expected pdu size exceeds the absolute pdu size from the xid/record-marker...

CVE-2026-57918

libnfs through 6.0.2 before 935b8db has an xid integer underflow in READIOVEC in rpcreadfromsocket in lib/socket.c during a connection to a crafted NFS server, when the expected pdu size exceeds the absolute pdu size from the xid/record-marker...

CVE-2026-57918

CVE-2026-57918 affects libnfs up to version 6.0.2 prior to the patch referenced by commit IDs f0b109d (NVD entry) / 935b8db (CVE record). The vulnerability is an xid integer underflow in READ_IOVEC within rpc_read_from_socket when a crafted NFS server causes the expected PDU size to exceed the ab...

CVE-2026-57918

libnfs through 6.0.2 before 935b8db has an xid integer underflow in READIOVEC in rpcreadfromsocket in lib/socket.c during a connection to a crafted NFS server, when the expected pdu size exceeds the absolute pdu size from the xid/record-marker...

CVE-2026-57918

libnfs through 6.0.2 before 935b8db has an xid integer underflow in READIOVEC in rpcreadfromsocket in lib/socket.c during a connection to a crafted NFS server, when the expected pdu size exceeds the absolute pdu size from the xid/record-marker...

SUSE CVE-2026-53244

In the Linux kernel, the following vulnerability has been resolved: VFS: fix possible failure to unlock in nfsd4createfile atomiccreate in fs/namei.c drops the reference to the dentry when it returns an error. This behaviour was imported into dentrycreate so that it will drop the reference if an...

SUSE-SU-2026:22363-1 Security update for libnfs

This update for libnfs fixes the following issue - CVE-2026-53689: integer overflow during a connection to a crafted NFS server bsc1268135...

EUVD-2026-38894

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...

CVE-2026-53026 NFSD: fix nfs4_file access extra count in nfsd4_add_rdaccess_to_wrdeleg

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-SU-2026:22467-1 Security update for the Linux Kernel (Live Patch 14 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-38.1 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 cache...

SUSE-SU-2026:22421-1 Security update for the Linux Kernel (Live Patch 17 for SUSE Linux Enterprise Micro 6.0)

This update for the SUSE Linux Enterprise Kernel 6.4.0-40.1 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 cache...

SUSE CVE-2026-53689

libnfs through 6.0.2 before 55c18ea does not validate a string size, leading to an integer overflow during a connection to a crafted NFS server. This occurs in libnfszdrstring in lib/libnfs-zdr.c...

Ubuntu 20.04 LTS : Linux kernel (FIPS) vulnerabilities (USN-7795-2)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7795-2 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in...

Ubuntu 20.04 LTS : Linux kernel (AWS FIPS) vulnerabilities (USN-7795-3)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7795-3 advisory. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in...

RLSA-2026:19569 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: net: afcan: do not leave a dangling sk pointer in cancreate CVE-2024-56603 kernel: net/sched: Make cakeenqueue return NETXMITCN when past bufferlimit CVE-2025-39766 kernel: crypto:...