UBUNTU-CVE-2026-89613

In the Linux kernel, the following vulnerability has been resolved: ntfs: reject invalid empty mapping pairs Reject an attribute with empty mapping pairs if it has inconsistent highest VCN and size...

EUVD-2026-76678

In the Linux kernel, the following vulnerability has been resolved: pidfd: hold execupdatelock around namespace ioctl The PIDFDGETNAMESPACE ioctls in pidfdioctl perform a filesystem credentials ptrace access check before handing out a namespace file descriptor. The accompanying comment states tha...

CVE-2026-89766 pidfd: hold exec_update_lock around namespace ioctl

In the Linux kernel, the following vulnerability has been resolved: pidfd: hold execupdatelock around namespace ioctl The PIDFDGETNAMESPACE ioctls in pidfdioctl perform a filesystem credentials ptrace access check before handing out a namespace file descriptor. The accompanying comment states tha...

CVE-2026-89766

This Linux kernel vulnerability affects the PIDFD_GET_*_NAMESPACE ioctls in pidfd_ioctl(), which perform a ptrace credentials check before handing out a namespace file descriptor. Unlike the equivalent procfs paths (proc_ns_get_link, proc_ns_readlink), the pidfd path did not hold the target task'...

CVE-2026-89766

In the Linux kernel, the following vulnerability has been resolved: pidfd: hold execupdatelock around namespace ioctl The PIDFDGETNAMESPACE ioctls in pidfdioctl perform a filesystem credentials ptrace access check before handing out a namespace file descriptor. The accompanying comment states tha...

CVE-2026-89745

This Linux kernel vulnerability affects the debugfs subsystem. A prior commit changed relayfs from using the mmap file operation to mmap_prepare, but the corresponding lockdown check in debugfs was not updated. As a result, when the kernel is in integrity mode , debugfs fails to lock down files t...

CVE-2026-89745 debugfs: Fix lockdown check for mmap_prepare

In the Linux kernel, the following vulnerability has been resolved: debugfs: Fix lockdown check for mmapprepare Commit 651fdda8406d "relay: update relay to use mmapprepare" changed the mmap file operation to mmapprepare for relayfs, but the lockdown check in debugfs was not updated accordingly...

CVE-2026-89745 debugfs: Fix lockdown check for mmap_prepare

In the Linux kernel, the following vulnerability has been resolved: debugfs: Fix lockdown check for mmapprepare Commit 651fdda8406d "relay: update relay to use mmapprepare" changed the mmap file operation to mmapprepare for relayfs, but the lockdown check in debugfs was not updated accordingly...

EUVD-2026-76632

In the Linux kernel, the following vulnerability has been resolved: ubifs: fix out-of-bounds read in signature length check ubifssbverifysignature bounds the on-disk ubifssignode-len field before handing the signature payload to verifypkcs7signature, but the check has the wrong sign: if...

CVE-2026-89720

In the Linux kernel, the following vulnerability has been resolved: ubifs: fix out-of-bounds read in signature length check ubifssbverifysignature bounds the on-disk ubifssignode-len field before handing the signature payload to verifypkcs7signature, but the check has the wrong sign: if...

EUVD-2026-76613

In the Linux kernel, the following vulnerability has been resolved: nfsd: validate nseconds in TIMEDELEG decode paths The xdrgen-based TIMEDELEGACCESS and TIMEDELEGMODIFY decode arms store a raw uint32t nseconds directly into tvnsec without enforcing nseconds NSECPERSEC. The legacy...

CVE-2026-89701

In the Linux kernel, the following vulnerability has been resolved: nfsd: validate nseconds in TIMEDELEG decode paths The xdrgen-based TIMEDELEGACCESS and TIMEDELEGMODIFY decode arms store a raw uint32t nseconds directly into tvnsec without enforcing nseconds NSECPERSEC. The legacy...

CVE-2026-89694 nfsd: check client ownership when cancelling a copy-notify stateid

In the Linux kernel, the following vulnerability has been resolved: nfsd: check client ownership when cancelling a copy-notify stateid On the OFFLOADCANCEL path clp != NULL, managecpntfstate freed the target cpntf state without checking ownership. The lookup key st-siopaque.soid is allocated...

EUVD-2026-76606

In the Linux kernel, the following vulnerability has been resolved: nfsd: check client ownership when cancelling a copy-notify stateid On the OFFLOADCANCEL path clp != NULL, managecpntfstate freed the target cpntf state without checking ownership. The lookup key st-siopaque.soid is allocated...

CVE-2026-89694 nfsd: check client ownership when cancelling a copy-notify stateid

In the Linux kernel, the following vulnerability has been resolved: nfsd: check client ownership when cancelling a copy-notify stateid On the OFFLOADCANCEL path clp != NULL, managecpntfstate freed the target cpntf state without checking ownership. The lookup key st-siopaque.soid is allocated...

CVE-2026-89694

CVE-2026-89694 affects the Linux kernel NFS server (nfsd) on the OFFLOAD_CANCEL path. The function manage_cpntf_state() freed a target copy-notify state without verifying ownership. Because the lookup key (st->si_opaque.so_id) is allocated cyclically (guessable) and the embedded clientid is a ...

CVE-2026-89694

In the Linux kernel, the following vulnerability has been resolved: nfsd: check client ownership when cancelling a copy-notify stateid On the OFFLOADCANCEL path clp != NULL, managecpntfstate freed the target cpntf state without checking ownership. The lookup key st-siopaque.soid is allocated...

CVE-2026-89693 nfsd: check nfsd4_acl_to_attr() return value in nfsd4_create()

In the Linux kernel, the following vulnerability has been resolved: nfsd: check nfsd4acltoattr return value in nfsd4create nfsd4create stores the return value of nfsd4acltoattr in status, but the switchcreate-crtype block unconditionally overwrites it in every branch. ACL translation errors are...

CVE-2026-89687

CVE-2026-89687 affects the nfsd (Network File System Daemon) subsystem of the Linux kernel . The root cause is that the ->atomic_open operation is permitted to return success without actually opening the file (via finish_no_open()), which means dentry_create() can return a file that has not be...

EUVD-2026-76584

In the Linux kernel, the following vulnerability has been resolved: nfsd: gate nfs2 setacl by argp-mask The NFSACL v2 SETACL path shares the decoder convention used by its v3 sibling: nfsaclsvcdecodesetaclargs fills in argp-aclaccess only when NFSACL is set in the request mask and argp-acldefault...