cve-2026-43687

CVE-2026-43687 — 리버스 엔지니어링 노트 및 재현 macOS NFS 클라이언트 액세스 캐시 경쟁 조건CVE-2026-43687에 대한 독립적인 리버스 엔지니어링과, 해당 경쟁 조건을 트리거하고 dtrace로 실시간으로 포착하는 동작하는 PoC입니다. 이 버그는 nfsvnopaccess에서 nfsnode 액세스 캐시 포인터를 동기화 없이 읽는 문제입니다. 악의적인 NFSv3 서버는 다른 스레드가 액세스 캐시를 읽는 동안 재할당하도록 유도할 수 있으며, 이로 인해 악의적인 서버가 영향을 줄 수 있는 커널 메모리 노출이...

ROS-20260929-73-0114

The vulnerability of the pnfsmarklayoutstateidinvalid function in the fs/nfs/pnfs.c module relates to errors during link counters updates in Linux kernel-based NFS client support. Exploiting this vulnerability can allow attackers to compromise the confidentiality, integrity, and accessibility of...

ROS-20260928-73-0124

The vulnerability of the nfs4setupreaddir function in the fs/nfs/nfs4proc.c module, which is part of the NFS client support in Linux kernel, relates to the pointer manipulation. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility o...

ROS-20260923-73-0065

The vulnerability of the nfsfiledirectread function in the fs/nfs/direct.c module, which is part of the NFS client support in Linux kernel, is related to data processing errors. Exploiting this vulnerability can allow an attacker to cause service failures...

CVE-2026-43686

A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. Connecting to a malicious NFS server may lead to kernel memory...

CVE-2026-84549

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious NFS server may cause unexpected system termination or corrupt kernel memory...

CVE-2026-84549

CVE-2026-84549 is an out-of-bounds read in the NFS client on macOS, addressed with improved bounds checking. Connecting to a malicious NFS server may cause unexpected system termination or corrupted kernel memory . The NVD assigns a CVSS 3.1 score of 7.5 (High) with a vector of AV:N/AC:L/PR:N/UI:...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: NFSv4: Prevent NULL-pointer dereference in nfs42completecopies On the node of an NFS client, some files saved in the mountpoint of the NFS server were copied to another location of the same NFS server. Accidentally, the...

CVE-2026-89698

A flaw was found in the Linux kernel's nfsd component. When an IPv6 NFS client is connected, the nfsdgenlrpcstatuscomposemsg function incorrectly handles address fields, leading to an out-of-bounds read. A local unprivileged attacker can exploit this vulnerability to disclose sensitive kernel...

DEBIAN-CVE-2026-89707

In the Linux kernel, the following vulnerability has been resolved: nfsd: release path refs on followdown error nfsdcrossmnt initializes a local struct path with mntget and dget before calling followdown. On a negative return the error arm jumps to out without releasing those references: err =...

CVE-2026-89707

In the Linux kernel, the following vulnerability has been resolved: nfsd: release path refs on followdown error nfsdcrossmnt initializes a local struct path with mntget and dget before calling followdown. On a negative return the error arm jumps to out without releasing those references: err =...

AZL-100529 CVE-2026-89707 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: nfsd: release path refs on followdown error nfsdcrossmnt initializes a local struct path with mntget and dget before calling followdown. On a negative return the error arm jumps to out without releasing those references: err =...

CVE-2026-89707

In the Linux kernel, the following vulnerability has been resolved: nfsd: release path refs on followdown error nfsdcrossmnt initializes a local struct path with mntget and dget before calling followdown. On a negative return the error arm jumps to out without releasing those references: err =...

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-2026-89714

This Linux kernel vulnerability affects the NFSv4 client subsystem. The root cause is a memory leak of server->delegation_hash_table (4 KiB per attempt with the default delegation watermark) when nfs4_server_common_setup() fails at an intermediate step (is_ds_only_client(), nfs4_init_session()...

CVE-2026-89707: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: nfsd: release path refs on followdown error nfsdcrossmnt initializes a local struct path with mntget and dget before calling followdown. On a negative return the error arm jumps to out without releasing those references: err =...

PT-2026-90257

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the SUNRPC component where the gss unwrap resp priv function improperly validates the RPCSEC GSS opaque length. Because the sum of offset and opaque len is computed...

Fedora 43 : libnfs (2026-2e196b6fa5)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-2e196b6fa5 advisory. Fixes CVE-2026-57918 and CVE-2026-53689 Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that...

USN-8604-1 linux-azure-6.17 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Foo-over-UDP FOU; - ARM64 architecture; - x86 architecture; - Block layer subsystem; - Cryptographic API; - Drivers...

SUSE CVE-2026-29009

U-Boot before 2026.07-rc2 contains a buffer overflow vulnerability in nfsreadlinkreply net/nfs-common.c when CONFIGCMDNFS is enabled, allowing a malicious or compromised NFS server to overflow the 2048-byte nfspathbuff buffer by returning multiple relative symlink targets that are appended withou...