Estudo-de-Caso-CVE-2026-31431-CopyFail

🐧 CVE-2026-31431 — CopyFail: Escalada de Privilegios en el Kernel de Linux Caso de Estudio completo — Cómo fue descubierta, cómo funciona, cómo probarla, cómo replicarla en entorno seguro y cómo corregir la vulnerabilidad crítica que afecta a casi todas las distribuciones Linux desde 2017. 🚨 Avis...

CVE-2026-47555

NVIDIA GPU Display Driver for Windows and Linux contains a vulnerability in the kernel mode layer where a user could cause uninitialized kernel memory to be copied back to userspace. A successful exploit of this vulnerability might lead to information disclosure...

CVE-2026-97612

A flaw was found in the Linux kernel's Multiprotocol Label Switching MPLS networking subsystem. When all labels are removed from an encapsulated packet, the kernel fails to clear internal protocol tracking metadata, leaving stale network header references. An attacker could exploit this flaw by...

AZL-104645 CVE-2026-97612 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: net: mpls: clear innerprotocol when the last label is popped skbmplspush records the pre-encapsulation network header once, gated on !skb-innerprotocol. skbmplspop never clears that record, so it outlives the encapsulation it...

CVE-2026-90191: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: mailbox: riscv-sbi-mpxy: validate RPMI notification lengths The SBI return value controls how many bytes are copied from shared memory into the RPMI notification buffer. It is not validated against the negotiated shared-memory si...

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

In the Linux kernel, the following vulnerability has been resolved: VMCI: Fixed a runtime warning from memcpy in dgdispatchashost. Syzkaller encountered a “WARNING in dgdispatchashost” bug. memcpy: A field-spanning write was detected size 56 for a single field “&dginfo-msg” in...

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

In the Linux kernel, the following vulnerability has been resolved: nouveau/dmem: Fixed the vulnerability in the migratetoram function when there is a copy error. The nouveaudmemcopyone function ensures that the copy push command is sent to the device’s firmware, but it does not track whether the...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: wl1251: A possible buffer overflow issue in wl1251cmdscan has been fixed. The function wl1251cmdscan calls memcpy without checking the length of the destination buffer. This vulnerability can be mitigated by checking that the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: drm/i915/gem: added a missing boundary check in vmaccess A missing bounds check in vmaccess can lead to an out-of-bounds read or write in the adjacent memory area. This occurs because the len attribute is not validated before the...

Astra Linux – Vulnerability in TIF format

LibTIFF 4.4.0 contains an out-of-bounds write vulnerability in TIFFmemcpy in libtiff/tifunix.c:346, when called from extractImageSection, located at tools/tiffcrop.c:6860. This vulnerability allows attackers to cause a denial-of-service attack through a crafted TIF file. For users who compile...

Astra Linux – Vulnerability in advancecomp

It was discovered that Advancecomp v2.3 contains a heap buffer overflow issue due to the interceptormemcpy component at /sanitizercommon/sanitizercommoninterceptors.inc...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: BPF: Fixed potential improper pointer dereferencing in bpfsysbpf. The bpfsysbpf helper function allows an eBPF program to load another eBPF program from within the kernel. In this case, the argument union bpfattr pointer along...

CVE-2026-84968: Out-of-bounds Read

An out-of-bounds read in the BSON decoding component of the MongoDB PHP driver may allow an unauthenticated party who supplies specially formed input to have a small amount of adjacent process memory copied into an error message that is returned to application code. This may result in unintended...

PT-2026-86704

In the Linux kernel, the following vulnerability has been resolved: cxl: Fix CXL HEADERLOG SIZE to match RAS Capability size The CXL r4.0 8.2.4.17.7 RAS Capability Structure has total length 0x58 bytes CXL RAS CAPABILITY LENGTH; the Header Log occupies the trailing 64 bytes at offset 0x18. CXL...

CVE-2026-76840

RustDesk's Windows clipboard redirection copies a peer-supplied length into a fixed-size caller buffer without an upper bound check. When an OLE paste consumer such as explorer.exe calls IStream::Read with a buffer of cb bytes, CliprdrStreamRead in libs/clipboard/src/windows/wfcliprdr.c requests...

PT-2026-72907

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the peak usb component where the pcan usb fd decode buf function fails to properly validate uCAN receive record lengths when processing records packed in a USB receive...

CVE-2026-68279

In the Linux kernel, the following vulnerability has been resolved: drm/dp/mst: fix OOB reads in remote DPCD/I2C sideband reply parsers drmdpsidebandparseremotedpcdread reads numbytes from the raw message and then unconditionally does: memcpybytes, &raw-msgidx, numbytes; without checking that idx...

EUVD-2026-54164

FFmpeg versions from 0.5 up to, but not including, 9.0 contain an uninitialized heap memory disclosure vulnerability in the native TIFF decoder in libavcodec/tiff.c. An attacker who can cause FFmpeg to decode a crafted TIFF file can supply a valid Deflate-compressed strip that terminates...

CVE-2026-15314

Tapo P110 v1 smart Wi-Fi Plug contains an improper boundary validation vulnerability in the handling of authenticated HTTP request bodies due to insufficient input validation before memory copy operations. This may lead to buffer overflow condition, causing the web service process to crash...

CVE-2026-67673

A stack-based buffer overflow vulnerability exists in the cmdedl function of OreSat Firmware v1.0. The vulnerability is triggered when processing the edl fwflash command, where the argument is copied to a 64-byte stack buffer via memcpy without proper length validation. An attacker with physical...