Linux Kernel Security Vulnerabilities

Versions of the Linux kernel from 6.1.119 to 6.1.189, from 6.6.63 to 6.6.158, from 6.11.10 to 6.12, and version 6.12 contain security vulnerabilities. The vulnerability stems from inconsistent IDR key fields in the manual hashtable handles in net/sched clsu32. Hashtables created with an explicit...

CVE-2026-89676

A flaw was found in the Linux kernel's Network File System Daemon nfsd component. When performing an asynchronous async copy operation, a programming error causes a stale identifier IDR entry to point to memory that has already been reused. This can lead to memory corruption, where the system...

AZL-100704 CVE-2026-89676 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix stale s2scpstateids IDR entry for async COPY For an async COPY, nfsd4copy called nfs4initcopystate before dupcopyfields, so the s2scpstateids IDR was pointed at &u-copy-cpstateid -- memory in the per-rqstp COMPOUND buff...

UBUNTU-CVE-2026-89676

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix stale s2scpstateids IDR entry for async COPY For an async COPY, nfsd4copy called nfs4initcopystate before dupcopyfields, so the s2scpstateids IDR was pointed at &u-copy-cpstateid -- memory in the per-rqstp COMPOUND buff...

CVE-2026-89676 nfsd: fix stale s2s_cp_stateids IDR entry for async COPY

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix stale s2scpstateids IDR entry for async COPY For an async COPY, nfsd4copy called nfs4initcopystate before dupcopyfields, so the s2scpstateids IDR was pointed at &u-copy-cpstateid -- memory in the per-rqstp COMPOUND buff...

CVE-2026-89676

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix stale s2scpstateids IDR entry for async COPY For an async COPY, nfsd4copy called nfs4initcopystate before dupcopyfields, so the s2scpstateids IDR was pointed at &u-copy-cpstateid -- memory in the per-rqstp COMPOUND buff...

EUVD-2026-76588

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix stale s2scpstateids IDR entry for async COPY For an async COPY, nfsd4copy called nfs4initcopystate before dupcopyfields, so the s2scpstateids IDR was pointed at &u-copy-cpstateid -- memory in the per-rqstp COMPOUND buff...

CVE-2026-89676

CVE-2026-89676 affects the Linux kernel nfsd (Network File System Daemon) component. During an asynchronous COPY operation, nfsd4_copy() initialized the copy stateid before duplicating fields, leaving the s2s_cp_stateids IDR entry pointing at transient per-request COMPOUND buffer memory that is r...

CVE-2026-89676 nfsd: fix stale s2s_cp_stateids IDR entry for async COPY

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix stale s2scpstateids IDR entry for async COPY For an async COPY, nfsd4copy called nfs4initcopystate before dupcopyfields, so the s2scpstateids IDR was pointed at &u-copy-cpstateid -- memory in the per-rqstp COMPOUND buff...

PT-2026-96542

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix stale s2s cp stateids IDR entry for async COPY For an async COPY, nfsd4 copy called nfs4 init copy state before dup copy fields, so the s2s cp stateids IDR was pointed at &u-copy-cp stateid -- memory in the per-rqstp...

PT-2026-90392

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.2.6-1.1 Description An issue exists in the nfsd component where nfsd4 copy calls nfs4 init copy state before dup copy fields during an async COPY operation. This causes the s2s cp stateids IDR to point to memor...

SUSE CVE-2026-63885

In the Linux kernel, the following vulnerability has been resolved: drm/gem: fix race between changehandle and handledelete drmgemchangehandleioctl leaves the old handle live in the IDR during the window between spinunlocktablelock and the final spinlocktablelock. A concurrent drmgemhandledelete ...