CVE-2026-36355

CVE-2026-36355: Realtek rtl819x Jungle SDK - デバッグIOCTLを介した認証なしカーネルメモリ読み書き CVE : CVE-2026-36355 CWE : CWE-782, CWE-787, CWE-200 発見者 : Daniil Gordeev 公開日 : 2026-05-03 概要 Realtek rtl819x アウトオブツリー「Jungle SDK」に含まれる rtl8192cd Wi-Fi カーネルドライバは、writemem 0x89F5 および readmem 0x89F6...

CVE-2025-8061-Exploit

CVE-2025-8061 エクスプロイト 概要 LnvMSRIO.sys （Lenovo MSR I/O ドライバー）用の Proof-of-Concept エクスプロイトです。Superfetch の VA→PA 変換を介して、任意の物理メモリ読み書きとカーネルメモリアクセスを実証します。 ドライバー情報 プロパティ| 値 ---|--- ドライバー名| LnvMSRIO.sys デバイス名| \.\WinMsrDev サービス名| LnvMSRIO ベンダー| Lenovo 目的| システムユーティリティ向けの MSR および物理メモリアクセス 脆弱な IOCTL...

kernel: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls

A flaw was found in the Linux kernel's Point-to-Point Protocol PPP subsystem. A local unprivileged user can exploit this vulnerability by creating a new user namespace and bypassing authorization checks for unattached administrative input/output controls ioctls. This allows the user to perform...

kernel: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls

A flaw was found in the Linux kernel's Point-to-Point Protocol PPP subsystem. A local unprivileged user can exploit this vulnerability by creating a new user namespace and bypassing authorization checks for unattached administrative input/output controls ioctls. This allows the user to perform...

DEBIAN-CVE-2026-89998

In the Linux kernel, the following vulnerability has been resolved: dm: fix race when loading and unloading a table If the userspace calls two concurrent table load ioctls and one of them succeeds and the other fails, there is a race condition because dmsetupmdqueue walks &md-tabledevices without...

CVE-2026-89921

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq but the full ext substructure is copied into the cpu local variable on...

DEBIAN-CVE-2026-89921

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq but the full ext substructure is copied into the cpu local variable on...

AZL-101535 CVE-2026-89921 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq but the full ext substructure is copied into the cpu local variable on...

CVE-2026-89998

This Linux kernel vulnerability affects the Device Mapper (dm) subsystem. A race condition occurs when userspace issues two concurrent table-load ioctls where one succeeds and the other fails: dm_setup_md_queue walks &md->table_devices without holding a lock, racing against dm_table_destroy → ...

CVE-2026-89998 dm: fix race when loading and unloading a table

In the Linux kernel, the following vulnerability has been resolved: dm: fix race when loading and unloading a table If the userspace calls two concurrent table load ioctls and one of them succeeds and the other fails, there is a race condition because dmsetupmdqueue walks &md-tabledevices without...

CVE-2026-89921 KVM: s390: Zero initialize data structures for inject_pfault_token

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq but the full ext substructure is copied into the cpu local variable on...

CVE-2026-89921

CVE-2026-89921 affects the Linux kernel KVM s390 architecture. The function __kvm_inject_pfault_token() only sets .type and .u.ext.ext_params2 of the on-stack struct kvm_s390_irq, but the full ext substructure is copied into the CPU local variable on injection, leaving ext_params and pad with sta...

EUVD-2026-80521

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq but the full ext substructure is copied into the cpu local variable on...

CVE-2026-89921 KVM: s390: Zero initialize data structures for inject_pfault_token

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq but the full ext substructure is copied into the cpu local variable on...

Linux Distros Unpatched Vulnerability : CVE-2026-89921

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq bu...

CVE-2026-89921: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Zero initialize data structures for injectpfaulttoken kvminjectpfaulttoken only sets .type and .u.ext.extparams2 of the on-stack struct kvms390irq but the full ext substructure is copied into the cpu local variable on...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A flaw was discovered in the Linux kernel. A denial-of-service attack may occur if a consecutive request for NVMEIOCTLRESET and NVMEIOCTLSUBSYSRESET is made through the device file of the driver, resulting in a disconnection of the PCIe link...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: “comedi”: checking the attached status of devices in compatible IOCTLs. Syzbot identified a issue 1 that causes the kernel to crash, seemingly due to the absence of the callback dev-getvalidroutes. This should never happen, as th...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A memory leak flaw, along with potential division by zero and integer overflow issues, have been detected in the Linux kernel’s V4L2 and vivid test code functionality. This issue occurs when a user triggers ioctls, such as the VIDIOCSDVTIMINGS ioctl. This could allow a local user to crash the...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fixed race conditions between concurrent hwparams and hwfree calls Currently, there are no proper checks or protections against concurrent calls to hwparams and hwfree ioctls, which may lead to a Use-After-Free error...