The vulnerability of the nfsd component in the Linux operating system allows a hacker to trigger a service failure.

The vulnerability of the idmapidtoname function in the nfsd component of the Linux operating system is related to improper error handling. Exploiting this vulnerability can allow an attacker to cause a service failure...

PT-2025-16666

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved. The issue is related to the nfsd proc stat init function ignoring the return value of svc proc register. If the procfile creation...

PT-2025-28007

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to the fixed version Description: A race condition exists between nfsd registration and exports proc, which can cause a kernel OOPs. This issue is triggered by a race between the exportfs -r command and the mount -...

Linux Distros Unpatched Vulnerability : CVE-2024-50121

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfsd: cancel nfsdshrinkerwork using sync mode in nfs4stateshutdownnet In the normal case, when we excute echo 0 /proc/fs/nfsd/threads, the function...

Linux Distros Unpatched Vulnerability : CVE-2025-21796

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfsd: clear aclaccess/acldefault after releasing them If getting acldefault fails, aclaccess and acldefault will be released simultaneously. However, aclaccess...

Linux Distros Unpatched Vulnerability : CVE-2021-47107

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix READDIR buffer overflow If a client sends a READDIR count argument that is too sma...

Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-802)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-802 advisory. In the Linux kernel, the following vulnerability has been resolved: nullblk: fix null-ptr-dereference while configuring 'power' and 'submitqueues' CVE-2024-36478 In the Linux kernel, the...

AZL-58917 CVE-2025-21796 affecting package kernel for versions less than 6.6.82.1-1

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear aclaccess/acldefault after releasing them If getting acldefault fails, aclaccess and acldefault will be released simultaneously. However, aclaccess will still retain a pointer pointing to the released posixacl, which...

CVE-2025-21795

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix hang in nfsd4shutdowncallback If nfs4client is in courtesy state then there is no point to send the callback. This causes nfsd4shutdowncallback to hang since clcbinflight is not 0. This hang lasts about 15 minutes until...

CVE-2025-21796

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear aclaccess/acldefault after releasing them If getting acldefault fails, aclaccess and acldefault will be released simultaneously. However, aclaccess will still retain a pointer pointing to the released posixacl, which...

AZL-58907 CVE-2025-21796 affecting package kernel for versions less than 5.15.180.1-1

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear aclaccess/acldefault after releasing them If getting acldefault fails, aclaccess and acldefault will be released simultaneously. However, aclaccess will still retain a pointer pointing to the released posixacl, which...

UBUNTU-CVE-2025-21796

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear aclaccess/acldefault after releasing them If getting acldefault fails, aclaccess and acldefault will be released simultaneously. However, aclaccess will still retain a pointer pointing to the released posixacl, which...

CVE-2025-21796 nfsd: clear acl_access/acl_default after releasing them

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear aclaccess/acldefault after releasing them If getting acldefault fails, aclaccess and acldefault will be released simultaneously. However, aclaccess will still retain a pointer pointing to the released posixacl, which...

CVE-2025-21796

CVE-2025-21796 is a Linux kernel use-after-free vulnerability in nfsd where acl_access/acl_default could retain a pointer to a released posix_acl, enabling a UAF scenario. The fix is to clear acl_access/acl_default after releasing them to prevent the use-after-free. Public advisories (e.g., ALAS2...

CVE-2025-21796

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear aclaccess/acldefault after releasing them If getting acldefault fails, aclaccess and acldefault will be released simultaneously. However, aclaccess will still retain a pointer pointing to the released posixacl, which...

CVE-2025-21795

CVE-2025-21795 affects the Linux kernel NFSD component. The vulnerability causes nfsd4_shutdown_callback to hang when nfs4_client is in courtesy state, because cl_cb_inflight remains non-zero and TCP may take ~15 minutes to drop the connection. The provided connected documents indicate a fix in n...

CVE-2025-21795 NFSD: fix hang in nfsd4_shutdown_callback

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix hang in nfsd4shutdowncallback If nfs4client is in courtesy state then there is no point to send the callback. This causes nfsd4shutdowncallback to hang since clcbinflight is not 0. This hang lasts about 15 minutes until...

CVE-2025-21795

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix hang in nfsd4shutdowncallback If nfs4client is in courtesy state then there is no point to send the callback. This causes nfsd4shutdowncallback to hang since clcbinflight is not 0. This hang lasts about 15 minutes until...

CVE-2025-21795 NFSD: fix hang in nfsd4_shutdown_callback

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix hang in nfsd4shutdowncallback If nfs4client is in courtesy state then there is no point to send the callback. This causes nfsd4shutdowncallback to hang since clcbinflight is not 0. This hang lasts about 15 minutes until...

CVE-2025-21795: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix hang in nfsd4shutdowncallback If nfs4client is in courtesy state then there is no point to send the callback. This causes nfsd4shutdowncallback to hang since clcbinflight is not 0. This hang lasts about 15 minutes until...