CVE-2022-23222-POC

CVE-2022-23222 の概念実証エクスプロイトコード これは CVE-2022-23222 の PoC です。これは Local Privilege Escalation（ローカル権限昇格）の脆弱性です。 この PoC はカーネルバージョン 5.13.0-27-generic の Ubuntu 20.04 用に作成されましたが、他のカーネルバージョンも影響を受けます。 エクスプロイトの詳細な分析については、write-up をお読みください。 使い方 エクスプロイトの前提条件として、libbpf がインストールされていることを確認してください。 POC...

CVE-2026-53360-POC

CVE-2026-53360: KVM SEV-SNP PSC 힙 버퍼 오버런 KVM의 SEV-SNP 페이지 상태 변경PSC 처리에서 발생하는 힙 읽기 및 쓰기 오버플로우에 대한 개념 증명입니다. 악의적인 SEV-SNP 게스트가 호스트 커널로 하여금 PSC 항목 배열을 슬랩 할당 영역 끝까지 탐색하게 만듭니다. 이로 인해 인접한 kmalloc-cg-32 객체의 레이아웃이 유출되고, 제어된 작은 값이 그 객체에 기록되며, 게스트는 이를 원하는 만큼 반복할 수 있습니다. 전체 분석:...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nfconntrackhelper: Passes a helper to handle cleanup nfconntrackhelperunregister calls nfctexpectiteratedestroy to remove expectations related to the unregistered helper. However, it passes NULL instead of the helpe...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: mm/slub: Added missing TID updates during the deactivation of a slab. The fastpath in slaballocnode assumes that c-slab remains stable as long as the TID remains the same. However, there are two places in slaballoc where the T...

CVE-2026-89668

A flaw was found in the nfsd component of the Linux kernel. The nfsddebugfsinit function is called before nfsd4initslabs. If the slab allocation fails, the nfsddebugfsexit cleanup function is bypassed, leaving orphaned debugfs files with stale function pointers. This can lead to a use-after-free...

Linux Distros Unpatched Vulnerability : CVE-2026-89691

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfsd: clear opcnt on compound arg release to prevent OOB read nfsd4releasecompoundargs resets args-ops to the inline iops8 array when the dynamically-allocated...

Linux Distros Unpatched Vulnerability : CVE-2026-89668

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - nfsd: move nfsddebugfsinit after nfsd4initslabs in initnfsd nfsddebugfsinit runs before nfsd4initslabs in initnfsd. If the slab allocation fails, the bare retur...

DEBIAN-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...

CVE-2026-89668

In the Linux kernel, the following vulnerability has been resolved: nfsd: move nfsddebugfsinit after nfsd4initslabs in initnfsd nfsddebugfsinit runs before nfsd4initslabs in initnfsd. If the slab allocation fails, the bare "return retval" bypasses nfsddebugfsexit, leaving orphan debugfs files wit...

DEBIAN-CVE-2026-89668

In the Linux kernel, the following vulnerability has been resolved: nfsd: move nfsddebugfsinit after nfsd4initslabs in initnfsd nfsddebugfsinit runs before nfsd4initslabs in initnfsd. If the slab allocation fails, the bare "return retval" bypasses nfsddebugfsexit, leaving orphan debugfs files wit...

DEBIAN-CVE-2026-89537

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Reject short RFC 4121 MIC tokens in gsskrb5verifymicv2 gsskrb5verifymicv2 reads the token ID at ptr0..1, the flags byte at ptr2, and padding at ptr3..7, then passes ptr + GSSKRB5TOKHDRLEN and cksumlen to gsskrb5micbuildsg...

CVE-2026-89668

In the Linux kernel, the following vulnerability has been resolved: nfsd: move nfsddebugfsinit after nfsd4initslabs in initnfsd nfsddebugfsinit runs before nfsd4initslabs in initnfsd. If the slab allocation fails, the bare "return retval" bypasses nfsddebugfsexit, leaving orphan debugfs files wit...

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...

UBUNTU-CVE-2026-89668

In the Linux kernel, the following vulnerability has been resolved: nfsd: move nfsddebugfsinit after nfsd4initslabs in initnfsd nfsddebugfsinit runs before nfsd4initslabs in initnfsd. If the slab allocation fails, the bare "return retval" bypasses nfsddebugfsexit, leaving orphan debugfs files wit...

EUVD-2026-76626

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...

CVE-2026-89668 nfsd: move nfsd_debugfs_init() after nfsd4_init_slabs() in init_nfsd()

In the Linux kernel, the following vulnerability has been resolved: nfsd: move nfsddebugfsinit after nfsd4initslabs in initnfsd nfsddebugfsinit runs before nfsd4initslabs in initnfsd. If the slab allocation fails, the bare "return retval" bypasses nfsddebugfsexit, leaving orphan debugfs files wit...

CVE-2026-89668 nfsd: move nfsd_debugfs_init() after nfsd4_init_slabs() in init_nfsd()

In the Linux kernel, the following vulnerability has been resolved: nfsd: move nfsddebugfsinit after nfsd4initslabs in initnfsd nfsddebugfsinit runs before nfsd4initslabs in initnfsd. If the slab allocation fails, the bare "return retval" bypasses nfsddebugfsexit, leaving orphan debugfs files wit...

EUVD-2026-76526

In the Linux kernel, the following vulnerability has been resolved: ntfs: bound the free-cluster bitmap scan to the volume vol-lcnemptybitsperpage is sized from vol-nrclusters at mount, but ntfsclusteralloc bounds its scan of that array by the size of $Bitmap. Those are independent on-disk...

CVE-2026-89614 ntfs: bound the free-cluster bitmap scan to the volume

In the Linux kernel, the following vulnerability has been resolved: ntfs: bound the free-cluster bitmap scan to the volume vol-lcnemptybitsperpage is sized from vol-nrclusters at mount, but ntfsclusteralloc bounds its scan of that array by the size of $Bitmap. Those are independent on-disk...

EUVD-2026-76269

In the Linux kernel, the following vulnerability has been resolved: fuse: copy request headers via a stack buffer for io-uring The fuse-io-uring transport copies req-in.h out to the ring in fuseuringcopytoring and req-out.h back in fuseuringcommit. Both headers live inside the fuserequest slab...