overread

overread Simulates CVE-2023-4966 Citrix Bleed overread bug This is my final project for Harvard CS50 Cybersecurity 2023. It's about a bug. A small bug – with huge, ongoing consequences. In this presentation, I’ll be sharing the “bleeding insights” from one developer’s tiny mistake. A mistake that...

CVE-2024-5535

CVE-2024-5535 PoC - OpenSSL NPN Buffer Overread Note: We did not discover this, we only made a PoC for this based on the publication. https://nvd.nist.gov/vuln/detail/cve-2024-5535...

Citrix-Bleed-Buffer-Overread-Demo

Citrix-Bleed-Buffer-Overread-Demo This code functionally approximates the Citrix Bleed vulnerability CVE-2023-4699 of the improper handling of the return value of snprintf in C...

cve-images

cve-images — intentionally vulnerable lab images A collection of deliberately vulnerable Docker images for security study in an isolated lab. Started as nginx CVE reproductions and is growing into a broader set of vulnerable-by-design images e.g. DVWA. ⚠️ Safety These images are vulnerable on...

CVE-2026-55606 odhcpd: Stack buffer overread via DUID length endianness mismatch in memcmp()

odhcpd is the DHCPv6, DHCPv4, and router-advertisement server used by OpenWrt. In versions 25.12 and prior, odhcpd's DHCPv6 self-loop detection at dhcpv6.c:720 uses a network-byte-order DUID length value directly as the memcmp size parameter. On little-endian hosts, this causes memcmp to read far...

CVE-2026-55606

The odhcpd server, used by OpenWrt in versions 25.12 and prior , is vulnerable to a stack buffer overread due to a DUID length endianness mismatch in dhcpv6.c:720. On little-endian hosts , the software uses a network-byte-order DUID length value directly as a memcmp() size parameter, allowing a s...

CVE-2026-92497

A flaw was found in the ath12k Wi-Fi driver within the Linux kernel. This vulnerability occurs because the firmware buffer is read without first verifying that it contains enough data to hold a header. An attacker could potentially exploit this to cause a buffer overread, which may lead to...

CVE-2026-92498

A flaw was found in the Linux kernel's ath6kl Wi-Fi driver. Insufficient length checks in several Wireless Management Interface WMI event handlers, specifically ath6klwmiscancompleterx, ath6klwmiaddbareqeventrx, and ath6klwmidelbareqeventrx, allow the system to read beyond the allocated buffer...

CVE-2026-92496

A flaw was found in the ath11k Wi-Fi driver in the Linux kernel. This vulnerability allows a buffer overread to occur in the ath11kwmitlvoprx function. The driver reads the firmware buffer without adequately verifying its size, which could lead to reading data beyond the allocated memory. This...

Astra Linux – Vulnerability in pillow

In Pillow before 8.1.0, PcxDecode has a buffer over-reading issue when decoding a crafted PCX file, because the user-supplied stride value is trusted for buffer calculations...

Astra Linux – Vulnerability in binutils

A heap-based buffer overflow issue was discovered in the secmergehashlookup function in merge.c within the Binary File Descriptor BFD library also known as libbfd, as part of the GNU Binutils 2.31. This issue arises due to bfdaddmergesection improperly handling section merges when the size is not...

Astra Linux – Vulnerability in aspell

The libaspell.a file in GNU Aspell before version 0.60.8 has a buffer overflow issue for strings that end with a single '\0' byte. This issue occurs when the encoding is set to ucs-2 or ucs-4 outside of the application, as indicated by the ASPELLCONF environment variable...

Astra Linux – Vulnerability in Qemu

In QEMU 5.0.0, the file hw/usb/hcd-ohci.c contains a stack-based buffer over-read issue, caused by values obtained from the host controller driver...

Astra Linux – Vulnerability in aspell

The libaspell.a module in GNU Aspell prior to version 0.60.8 has a stack-based buffer overflow issue in the common::unescape function within common/getdata.cpp, caused by an isolated \ character...

Astra Linux – Vulnerability in PHP 7.3, PHP 8.1

In PHP versions 8.1. before 8.1.31, and 8.2. before 8.2.26, as well as 8.3. before 8.3.14, a bug in the convert.quoted-printable-decode filter can cause certain data to be read as one byte too much. This can, under certain circumstances, lead to crashes or reveal content from other memory areas...

Astra Linux – Vulnerability in glibc

The iconv feature in the GNU C Library also known as glibc or libc6, up to version 2.32, may have a buffer over-read issue when processing invalid multi-byte input sequences in the EUC-KR encoding...

Astra Linux – Vulnerability in Redis

Redis is an open-source, in-memory database that persists data on disk. When using the Redis Lua Debugger, users can send malformed requests, causing the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support 3.2 or...

Security update for libtcnative-2-0

This update for libtcnative-2-0 fixes the following issues: CVE-2026-86243: buffer overread during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash bsc1282623. CVE-2026-86246: insecure ALLOWCLIENTRENEGOTIATION, NOEXTENDEDMASTERSECRET, IGNOREUNEXPECTEDEOF and ALLOWNODHEK...

SUSE-SU-2026:4546-1 Security update for libtcnative-1-0, tomcat, tomcat10

This update for libtcnative-1-0, tomcat, tomcat10 fixes the following issues: Security issues fixed: libtcnative-1-0: - CVE-2026-86243: buffer overread during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash bsc1282623. - CVE-2026-86246: insecure ALLOWCLIENTRENEGOTIATIO...

Security update for libtcnative-1-0, tomcat11

This update for libtcnative-1-0, tomcat11 fixes the following issues: Security issues fixed: libtcnative-1-0: CVE-2026-86243: buffer overread during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash bsc1282623. CVE-2026-86246: insecure ALLOWCLIENTRENEGOTIATION,...