Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: nfsd: fixed a use-after-free issue due to delegation race conditions A delegation break can occur as soon as we call vfssetlease. A delegation break triggers a callback, which immediately adds the delegation to delrecalllru in...

Linux Distros Unpatched Vulnerability : CVE-2026-89686

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfsd: fix BUGON in nfsd4alloclayoutstateid on racing delegation revoke nfsd4alloclayoutstateid reads fp-fidelegfile without holding filock when the parent state...

Linux Distros Unpatched Vulnerability : CVE-2026-89703

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfsd: set SCSTATUSFREED in nfsd4droprevokedstid for delegations nfsd4droprevokedstid handles FREESTATEID for admin-revoked delegations but does not set...

Linux Distros Unpatched Vulnerability : CVE-2026-89659

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - NFSD: Prevent client use-after-free during delegation revoke A delegation stateid holds only a bare pointer to its owning nfs4client and does not keep it alive...

Linux Distros Unpatched Vulnerability : CVE-2026-89692

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfsd: clear CALLBACKRUNNING on failed delegation recall queue nfsdbreakonedeleg sets NFSD4CALLBACKRUNNING via testandsetbit at entry to serialize recall work,...

CVE-2026-89692

A flaw was found in the Linux kernel's Network File System NFS daemon, nfsd. This vulnerability occurs when a delegation recall operation fails, leaving a critical internal flag uncleared. This prevents subsequent attempts to break the same delegation, leading to a denial of service where file...

CVE-2026-89703

A flaw was found in the nfsd component of the Linux kernel. The nfsd4droprevokedstid function, which handles admin-revoked delegations, fails to correctly set a status flag before releasing a lock. This oversight can lead to a use-after-free condition when a freed delegation is incorrectly added ...

CVE-2026-89714

A flaw was found in the Linux kernel's Network File System NFS component. When an NFSv4 mount attempt fails, the nfs4servercommonsetup function does not properly free a memory allocation for the delegation hash table. A client that persistently retries a failed mount can exploit this to cause an...

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-2026-89686

A flaw was found in the Linux kernel's Network File System Daemon nfsd for NFSv4 layouts. A race condition allows a remote attacker to trigger a kernel panic, leading to a Denial of Service DoS. This occurs when the nfsd4alloclayoutstateid function accesses a file pointer without proper locking...

CVE-2026-89714

In the Linux kernel, the following vulnerability has been resolved: NFS: fix delegationhashtable leak when nfs4servercommonsetup fails nfs4servercommonsetup allocates server-delegationhashtable first, but server-destroy - the only path that frees the table via nfs4destroyserver - is not assigned...

DEBIAN-CVE-2026-89703

In the Linux kernel, the following vulnerability has been resolved: nfsd: set SCSTATUSFREED in nfsd4droprevokedstid for delegations nfsd4droprevokedstid handles FREESTATEID for admin-revoked delegations but does not set SCSTATUSFREED before releasing cllock. revokedelegation uses this flag to...

CVE-2026-89703

In the Linux kernel, the following vulnerability has been resolved: nfsd: set SCSTATUSFREED in nfsd4droprevokedstid for delegations nfsd4droprevokedstid handles FREESTATEID for admin-revoked delegations but does not set SCSTATUSFREED before releasing cllock. revokedelegation uses this flag to...

DEBIAN-CVE-2026-89692

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear CALLBACKRUNNING on failed delegation recall queue nfsdbreakonedeleg sets NFSD4CALLBACKRUNNING via testandsetbit at entry to serialize recall work, then calls nfsd4runcb to queue the recall. When the queue attempt fail...

CVE-2026-89692

In the Linux kernel, the following vulnerability has been resolved: nfsd: clear CALLBACKRUNNING on failed delegation recall queue nfsdbreakonedeleg sets NFSD4CALLBACKRUNNING via testandsetbit at entry to serialize recall work, then calls nfsd4runcb to queue the recall. When the queue attempt fail...

AZL-100455 CVE-2026-89686 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix BUGON in nfsd4alloclayoutstateid on racing delegation revoke nfsd4alloclayoutstateid reads fp-fidelegfile without holding filock when the parent stateid is a delegation. A concurrent delegation revoke via the laundromat...

DEBIAN-CVE-2026-89686

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix BUGON in nfsd4alloclayoutstateid on racing delegation revoke nfsd4alloclayoutstateid reads fp-fidelegfile without holding filock when the parent stateid is a delegation. A concurrent delegation revoke via the laundromat...

CVE-2026-89686

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix BUGON in nfsd4alloclayoutstateid on racing delegation revoke nfsd4alloclayoutstateid reads fp-fidelegfile without holding filock when the parent stateid is a delegation. A concurrent delegation revoke via the laundromat...

DEBIAN-CVE-2026-89659

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during delegation revoke A delegation stateid holds only a bare pointer to its owning nfs4client and does not keep it alive. The client survives its stateids only because destroyclient drains...

AZL-100350 CVE-2026-89659 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: NFSD: Prevent client use-after-free during delegation revoke A delegation stateid holds only a bare pointer to its owning nfs4client and does not keep it alive. The client survives its stateids only because destroyclient drains...