CyberMeowfia

Website: nebusec.ai · Twitter @nebusecurity · Bug list 885+ IonStack followup, follow https://github.com/NebuSec/CyberMeowfia/issues/44 Latest research IonStack part II : GhostLock, a stack-UAF that has existed in ALL Linux distributions for 15 years Linux Kernel 📖 Writeup · 🐦 Twitter Longinus : ...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: LoongArch: The ioaw hook was defined as mmiowb. The commit fb24ea52f78e0d595852e states that “drivers: Explicit invocations of mmiowb were removed.” All occurrences of mmiowb in drivers were removed. However, it is noted that:...

Chrome V8 Maglev Write Barrier Type Confusion RCE (CVE-2026-5865)

CVE-2026-5865 browser-side exploit for Google Chrome / Chromium V8 Maglev. Default chain: calibrated heap spray + addrof/fakeobj + WASM code-entry hijack set payload for shellcode. Alternate chain: Nebula JIT RWX exploitchain=nebulajit. Requires Chrome 130–146 pre-147.0.7727.55 and browserserver...

CVE-2026-45894

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Clear Present bit before tearing down PASID entry The Intel VT-d Scalable Mode PASID table entry consists of 512 bits 64 bytes. When tearing down an entry, the current implementation zeros the entire 64-byte structure...

CVE-2026-45944 iommu/vt-d: Clear Present bit before tearing down context entry

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Clear Present bit before tearing down context entry When tearing down a context entry, the current implementation zeros the entire 128-bit entry using multiple 64-bit writes. This creates a window where the hardware c...

CVE-2026-45894 iommu/vt-d: Clear Present bit before tearing down PASID entry

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Clear Present bit before tearing down PASID entry The Intel VT-d Scalable Mode PASID table entry consists of 512 bits 64 bytes. When tearing down an entry, the current implementation zeros the entire 64-byte structure...

SUSE CVE-2024-35818

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Define the ioaw hook as mmiowb Commit fb24ea52f78e0d595852e "drivers: Remove explicit invocations of mmiowb" remove all mmiowb in drivers, but it says: "NOTE: mmiowb has only ever guaranteed ordering in conjunction wit...

ruby:fuzz_ruby_gems: Use-after-poison in rb_gc_writebarrier

Project: https://github.com/ruby/ruby.git Detailed Report: https://oss-fuzz.com/testcase?key=6645775814492160 Project: ruby Fuzzing Engine: honggfuzz Fuzz Target: fuzzrubygems Job Type: honggfuzzasanruby Platform Id: linux Crash Type: Use-after-poison READ 8 Crash Address: 0x7fffdd131f48 Crash...

Chrome: V8: JIT: Simplified-lowererer IrOpcode::kStoreField, IrOpcode::kStoreElement optimization bug

I think this commit has introduced the bugs: https://chromium.googlesource.com/v8/v8/+/c22ca7f73ba92f22d0cd29b06bb2944a545a8d3e%5E%21/F0 Here's a snippet. case IrOpcode::kStoreField: FieldAccess access = FieldAccessOfnode-op; Node valuenode = node-InputAt1; NodeInfo inputinfo = GetInfovaluenode;...

Google Chrome Write Barrier Elimination

A vulnerability exists in Google Chrome. The vulnerability is due to a write barrier elimination when parsing kStoreField or kStoreElement. A remote attacker could exploit this vulnerability by enticing the target user to open a specially crafted web page...

Chrome V8 JIT Optmization Bug Exploit

Chrome V8 JIT suffers from a simplified-lowererer IrOpcode::kStoreField, IrOpcode::kStoreElement optimization bug. Chrome: V8: JIT: Simplified-lowererer IrOpcode::kStoreField, IrOpcode::kStoreElement optimization bug I think this commit has introduced the bugs:...

Chrome V8 JIT - Simplified-lowererer IrOpcode::kStoreField_ IrOpcode::kStoreElement Optimization Bug

Chrome V8 JIT - Simplified-lowererer IrOpcode::kStoreField IrOpcode::kStoreElement Optimization Bug / I think this commit has introduced the bugs: https://chromium.googlesource.com/v8/v8/+/c22ca7f73ba92f22d0cd29b06bb2944a545a8d3e%5E%21/F0 Here's a snippet. case IrOpcode::kStoreField: FieldAccess...

Firefox Code Execution

Mozilla Firefox browsers contain a vulnerability related to errors in the implementation of the MPostWriteBarrier class. Exploiting this vulnerability allows malicious actors to cause service interruptions memory corruption and unexpected application termination or execute arbitrary code by...