CVE-2014-4076

CVE-2014-4076 PoC 该概念验证直接从其原始Python版本复制，并用C++重写。 构建 本项目使用Visual Studio 2013 Update 4构建。 注意 只有属于管理员组的用户才能打开设备并执行IO控制，这意味着该漏洞利用仅能将管理员提升为SYSTEM，在webshell环境中完全无效 。 特别感谢@KingsleyChen的帮助。...

can-i-take-over-xyz

免责声明 ⚠️ 本文档的作者对内容的正确性不承担任何责任。本项目仅用于帮助安全研究人员判断某资源是否存在漏洞，但不保证准确性。本项目严重依赖社区贡献；因此，证明某资源存在漏洞最终由安全研究人员和漏洞赏金计划自行决定。 此外，需要明确的是，本项目的目的并非识别或披露针对各种服务安全措施的绕过方法。相反，此类绕过方法应直接报告给受影响的服务，以便采取适当措施。 最后，值得注意的是，某些漏洞赏金计划可能直接接受悬空DNS记录报告，而不要求提供被利用的证据。 什么是子域名接管？ 子域名接管漏洞是指当某个子域名（subdomain.example.com）指向一个已被删除或移除的服务（例如...

CVE-2026-89578

A flaw was found in the Linux kernel's device mapper I/O dm-io component. When handling DMIOBIO requests, incorrect sector-based accounting for misaligned direct I/O buffers could lead to an infinite loop. This issue can cause I/O operations to hang indefinitely, resulting in a denial of service...

CVE-2026-89751

A flaw was found in the Linux kernel's x86/tdx component. An off-by-one error in the handlein and handleout functions, specifically in the GENMASK calculation for port I/O operations, causes the mask to be one bit too wide. This incorrect handling of I/O sizes could potentially lead to unintended...

CVE-2026-89644

A flaw was found in the Linux kernel's btrfs filesystem. When performing direct I/O writes in a NOCOW No Copy-On-Write range, an extent map reference may not be properly released if an error occurs during extent creation. This oversight can lead to an extent map leak, potentially causing memory...

AZL-100772 CVE-2026-89751 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

CVE-2026-89751

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

CVE-2026-89644

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all exit paths. For direct writes into a NOCOW range,...

CVE-2026-89578

In the Linux kernel, the following vulnerability has been resolved: dm-io: clone the source bio instead of copying its biovec For DMIOBIO requests, doregion built each destination bio by walking the source bio's biovec and re-adding the pages one at a time, tracking the remaining transfer in...

CVE-2026-89584

In the Linux kernel, the following vulnerability has been resolved: block: validate user space vectors during extraction The bio-based drivers don't necessarily check the alignment split, and stacking block drivers don't always handle a misalignment detected after submitting the bio. Validate use...

CVE-2026-89751

CVE-2026-89751 is an off-by-one error in the Linux kernel's x86 TDX (Trusted Domain Extensions) port I/O handling. The functions handle_in() and handle_out() in arch/x86/coco/tdx/tdx.c compute a bitmask using GENMASK(BITS_PER_BYTE * size, 0). Since GENMASK(h, l) includes bit h , this produces a m...

EUVD-2026-76663

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

CVE-2026-89751 x86/tdx: Fix off-by-one in port I/O handling

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

CVE-2026-89751 x86/tdx: Fix off-by-one in port I/O handling

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

EUVD-2026-76556

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all exit paths. For direct writes into a NOCOW range,...

CVE-2026-89644 btrfs: fix extent map leak in NOCOW direct I/O write

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all exit paths. For direct writes into a NOCOW range,...

CVE-2026-89644 btrfs: fix extent map leak in NOCOW direct I/O write

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map leak in NOCOW direct I/O write btrfsdioiomapbegin calls btrfsgetextent, which returns an extent map reference that must be dropped on all exit paths. For direct writes into a NOCOW range,...

CVE-2026-89644

CVE-2026-89644 affects the btrfs filesystem in the Linux kernel. The root cause is an extent map reference leak in the NOCOW direct I/O write path: btrfs_get_blocks_direct_write() fails to drop the extent map obtained from btrfs_get_extent() when btrfs_create_dio_extent() returns an error (e.g., ...

CVE-2026-89578

CVE-2026-89578 affects the Linux kernel's dm-io component. In do_region(), DM_IO_BIO requests rebuilt each destination bio by walking the source bio's biovec and re-adding pages individually, using sector-based accounting . When a misaligned O_DIRECT buffer was split across pages, the vector leng...

CVE-2026-89578 dm-io: clone the source bio instead of copying its biovec

In the Linux kernel, the following vulnerability has been resolved: dm-io: clone the source bio instead of copying its biovec For DMIOBIO requests, doregion built each destination bio by walking the source bio's biovec and re-adding the pages one at a time, tracking the remaining transfer in...