CVE-2026-89702

A flaw was found in the Linux kernel's Network File System Daemon nfsd. When processing NFSv2/v3-over-UDP requests, the nfsdfhverify and nfsdfhverifyerr tracepoints incorrectly size a memory buffer. This can lead to an out-of-bounds write, potentially allowing a remote attacker to cause a denial ...

CVE-2026-89715

A flaw was found in the Linux kernel's NFS/localio component. A race condition during file handling can lead to a reference leak, where system resources are not properly released. This continuous accumulation of unreleased references can exhaust available resources, preventing network namespace...

CVE-2026-89696

A flaw was found in the Linux kernel's Network File System NFS daemon nfsd. A remote client can exploit this by sending a specially crafted NFS COMPOUND request. This request, when processed, can lead to a NULL pointer dereference in the nfsd kthread, causing the system to crash and resulting in ...

CVE-2026-89677

A flaw was found in the Linux kernel's Network File System Daemon nfsd. When creating files, the dentrycreate function could return an unexpected directory entry dentry. This could lead to a previously stored dentry being prematurely freed and then used again, potentially causing memory corruptio...

CVE-2026-89673

A flaw was found in the Linux kernel's NFS daemon nfsd. A remote attacker could exploit an error in the XDR External Data Representation padding calculation within the ffencodegetdeviceinfo function. This mismatch between reserved and actual data size leads to the leakage of stale reply-page...

CVE-2026-89670

A flaw was found in the Linux kernel's Network File System Daemon nfsd component. A race condition exists in the nfsdopenlocalfh function where an nfsdfile object can be freed and its memory recycled while another process attempts to access it. This can lead to a use-after-free vulnerability,...

CVE-2026-89698

A flaw was found in the Linux kernel's nfsd component. When an IPv6 NFS client is connected, the nfsdgenlrpcstatuscomposemsg function incorrectly handles address fields, leading to an out-of-bounds read. A local unprivileged attacker can exploit this vulnerability to disclose sensitive kernel...

CVE-2026-89546

A flaw was found in the Linux kernel's SUNRPC Sun Remote Procedure Call Network File System NFS callback service. A race condition during the service teardown can lead to system resources not being properly released, causing a resource leak. This issue could also result in a use-after-free...

CVE-2026-89701

A flaw was found in the Linux kernel's Network File System Daemon nfsd. The TIMEDELEGACCESS and TIMEDELEGMODIFY decode paths do not properly validate the nanosecond nseconds value in timestamps. This allows a remote attacker to provide a malformed timestamp, which can then be written to disk,...

CVE-2026-89697

A flaw was found in the Linux kernel's Network File System Daemon nfsd. When setting file attributes using nfsdprocsetattr, a specific code path BOTHTIMESET branch prematurely verifies file handles. This bypasses a critical write verification step fhwantwrite, allowing file attribute changes to...

CVE-2026-89537

A flaw was found in the Linux kernel's SUNRPC implementation, specifically within the gsskrb5verifymicv2 function. A remote malicious Network File System NFS server could provide a specially crafted, short Kerberos Message Integrity Code MIC token. This could lead to the kernel reading past an...

CVE-2026-89652

A flaw was found in the Linux kernel's Ceph file system. A malicious or compromised Ceph Metadata Server MDS can send a specially crafted LOOKUPNAME reply that causes a buffer overflow when copying dentry names during an NFS export operation. This out-of-bounds write can lead to memory corruption...

CVE-2026-89682

A flaw was found in the Linux kernel's NFS daemon nfsd component. The nfsdfiledisposelistdelayed function, responsible for deferring file disposal, uses a separately allocated structure for its freeme queue. During network namespace teardown, this structure can be prematurely freed. This allows...

CVE-2026-89715

In the Linux kernel, the following vulnerability has been resolved: NFS/localio: fix ref leak on nfsuuidaddfile failure When nfsuuidaddfile races with nfsuuidput tearing down uuid-net, it returns -ENXIO without publishing nfl-nfsuuid via rcuassignpointer. nfsopenlocalfh then enters its error bran...

DEBIAN-CVE-2026-89707

In the Linux kernel, the following vulnerability has been resolved: nfsd: release path refs on followdown error nfsdcrossmnt initializes a local struct path with mntget and dget before calling followdown. On a negative return the error arm jumps to out without releasing those references: err =...

DEBIAN-CVE-2026-89715

In the Linux kernel, the following vulnerability has been resolved: NFS/localio: fix ref leak on nfsuuidaddfile failure When nfsuuidaddfile races with nfsuuidput tearing down uuid-net, it returns -ENXIO without publishing nfl-nfsuuid via rcuassignpointer. nfsopenlocalfh then enters its error bran...

AZL-100889 CVE-2026-89711 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: NFSD: remove flawed WARNONONCE from nfsdmodecheck The header for commit e75b23f9e323 "nfsd: check dcanlookup in fhverify of directories" details the assumption that justified adding the WARNONONCE to nfsdmodecheck, that assumptio...

AZL-100142 CVE-2026-89713 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: NFSD: check truncate permission under inode lock nfsdsetattr checks whether a size update needs NFSDMAYTRUNC before it takes inodelock. The comparison uses the file size sampled by that unlocked read, but the actual ATTRSIZE upda...

DEBIAN-CVE-2026-89713

In the Linux kernel, the following vulnerability has been resolved: NFSD: check truncate permission under inode lock nfsdsetattr checks whether a size update needs NFSDMAYTRUNC before it takes inodelock. The comparison uses the file size sampled by that unlocked read, but the actual ATTRSIZE upda...

DEBIAN-CVE-2026-89711

In the Linux kernel, the following vulnerability has been resolved: NFSD: remove flawed WARNONONCE from nfsdmodecheck The header for commit e75b23f9e323 "nfsd: check dcanlookup in fhverify of directories" details the assumption that justified adding the WARNONONCE to nfsdmodecheck, that assumptio...