CVE-2026-89664

A flaw was found in the Linux kernel's Network File System Daemon nfsd. When processing malformed NFSv4 OPEN compound operations that include valid Portable Operating System Interface POSIX Access Control List ACL attributes, the kernel fails to release allocated memory resources. This oversight...

CVE-2026-89711

A flaw was found in the Linux kernel's Network File System Daemon NFSD. An invalid assumption in the nfsdmodecheck function regarding directory lookup capabilities during NFS reexport could lead to a null pointer dereference. A remote attacker could exploit this by performing a LOOKUP operation o...

CVE-2026-89667

A flaw was found in the Linux kernel's Network File System Daemon nfsd file caching mechanism. A race condition can occur during concurrent shutdown operations and file disposal, where a file might be unhashed and moved to a dispose list, but the shutdown process misses it. This can lead to a...

CVE-2026-89665

A flaw was found in the Linux kernel's nfsd component. A remote attacker could exploit this vulnerability by sending a specially crafted NFSv2 SETATTR or CREATE request with an out-of-range 'useconds' value. This could lead to incorrect timestamps being written to the filesystem, resulting in dat...

CVE-2026-89662

A flaw was found in the Linux kernel's Network File System Daemon NFSD. During client teardown, a race condition can occur where a lock owner is freed while still being referenced, leading to a use-after-free vulnerability. This can result in a NULL dereference, potentially causing a system crash...

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-2026-89708

A flaw was found in the Linux kernel's NFS daemon nfsd. During the teardown of an NFSv4 session, a race condition can occur where the session's memory is freed while an active callback task still holds a reference to it. This can lead to a use-after-free vulnerability, potentially causing system...

CVE-2026-89700

A flaw was found in the Linux kernel's nfsd component. A local user with CAPNETADMIN capabilities can exploit this by sending a specially crafted network attribute with an incorrect address family length. This can lead to an out-of-bounds read, potentially disclosing sensitive information or...

CVE-2026-89681

A flaw was found in the Linux kernel's nfsd component. A race condition in the layout fence worker can cause a double-reference to a layout stateid. This occurs because the workqueue core clears a pending flag prematurely, allowing a new worker to be scheduled while another is still active. The...

CVE-2026-89674

A flaw was found in the nfsd component of the Linux kernel. Incorrect calculations in the XDR External Data Representation buffer size within the nfsd4ffencodelayoutget function can lead to two critical issues. An attacker could potentially exploit this to write data beyond the intended memory...

CVE-2026-89685

A flaw was found in the Linux kernel's Network File System NFS daemon nfsd. A clock domain mismatch in the clientsstillreclaiming function allows a remote attacker to indefinitely hold the server in a grace period. By sending specific CLAIMPREVIOUS OPEN requests, an attacker can block all...

CVE-2026-89712

A flaw was found in the Linux kernel's Network File System Daemon NFSD component. A race condition exists where, during the processing of unmounted source-server mounts, a thread may temporarily release a lock. During this window, another NFS Remote Procedure Call RPC thread can free memory that...

CVE-2026-89663

A flaw was found in the Linux kernel's Network File System Daemon nfsd. This vulnerability arises from improper handling of "copy-notify stateids" during their revocation. When a stateid's reference is dropped without unlinking it, the memory can be freed while still in use by a reader, leading t...

CVE-2026-89678

A flaw was found in the Linux kernel's Network File System NFS daemon nfsd component. The nfsddirectwrite function, responsible for handling direct writes, incorrectly detects partial writes. This issue occurs because the logic for detecting short writes compares the actual bytes written against ...

CVE-2026-89699

A flaw was found in the Linux kernel's Network File System Daemon nfsd when handling NFSv4 CREATE operations. A remote attacker can exploit this by sending a crafted request with an oversized symbolic link symlink target length. This unbounded length can force the kernel to allocate a large amoun...

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-2026-89658

A flaw was found in the Linux kernel's Network File System Daemon NFSD. During NFSv4.0 revoked-state cleanup, a race condition can occur where a client's state identifier stateid reference does not properly prevent the client from being prematurely freed while still in use. This use-after-free...

CVE-2026-89669

A flaw was found in the nfsd component of the Linux kernel. A use-after-free vulnerability exists due to improper initialization of the copy-notify state ID before its publication. A remote attacker could exploit this by sending a crafted OFFLOADCANCEL operation, leading to a race condition that...

CVE-2026-89659

A flaw was found in the Linux kernel's Network File System Daemon NFSD. This use-after-free vulnerability occurs during the delegation revoke process. When an expired delegation is unhashed, a timing window exists where the client can be prematurely freed before the revocation is complete. This c...

CVE-2026-89687

A flaw was found in the Linux kernel's Network File System Daemon nfsd. The nfsdfiledoacquire function might attempt to use a file that has not been fully opened, as the -atomicopen operation could return success prematurely. While this scenario is considered highly improbable, it could lead to...