OESA-2026-3705 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: ocfs2/dlm: fix off-by-one in dlmmatchregions region comparison The local-vs-remote region comparison loop uses '=' instead of '', causing it to read one entry pa...

OBO

Off-By-One Slides from Off-By-One Conferences Watch all the talks Year ↓| Slides| Youtube playlist ---|---|--- 2024| Slides for Day 1...

Baron-Samedit-Heap-Buffer-Overflow-CVE-2021-3156

Baron-Samedit-Heap-Buffer-Overflow-CVE-2021-3156 Version Vulnarable To The Exploit The Baron Samedit vulnerability CVE-2021-3156 affects sudo legacy versions 1.8.2 through 1.8.31p2 and stable versions 1.9.0 through 1.9.5p1. This heap-based buffer overflow flaw was introduced in July 2011 via comm...

CVE-2022-3602

CVE−2022-3602 What is this? This document and repository is a write-up of CVE−2022-3602, a punycode buffer overflow issue in OpenSSL. It's an "anti-POC" the issue does not appear to exploitable intended for folks who maintain their own OpenSSL builds and for compiler maintainers. There is a...

CVE-2021-3156

CVE-2021-3156 - Heap-Based Buffer Overflow in Sudo ⚠️ For educational and authorized security research purposes only Original Exploit Authors Very grateful to the original PoC author Qualys Research Team Description Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based...

CVE-2026-90781

A flaw was found in alsa-lib. This vulnerability is an off-by-one stack buffer overflow in the sndctlasciielemidparse function. A local attacker can exploit this by supplying a specially crafted, long control-element identifier string through saved state files or command-line arguments. This can...

CVE-2006-3747

Files about my bugtraq publication and first working exploit for CVE-2006-3747 Apache modrewrite LDAP off-by-one buffer overflow. http://www.securityfocus.com/archive/1/443870 Public release date of POC/Exploit: 2006-08-20 Author: Jacobo Avariento Gimeno CVE id: CVE-2006-3747 Bugtraq id: 19204 CE...

cve-2010-1938

🚀 CVE-2010-1938 FTP Off-by-One Exploit A simple Python script to test an off-by-one vulnerability in the OPIE library CVE-2010-1938. This vulnerability affects certain FTP servers and may allow for Denial of Service DoS or arbitrary code execution. 📜 Description This script targets a known...

httpd: mod_proxy_ajp: off-by-one out-of-bounds reads in AJP getter functions

A flaw was found in the modproxyajp module of httpd. When processing AJP Apache JServ Protocol messages, the AJP getter functions attempt to read data beyond the allocated buffer size, allowing an attacker or a malformed request to cause an out-of-bounds read. This issue leads to a denial of...

CVE-2026-90781

alsa-lib through 1.2.16.1 contains an off-by-one stack buffer overflow in the __snd_ctl_ascii_elem_id_parse() function (in ctlparse.c). When parsing a name= field with 64 or more characters, the function writes one byte past a 64-byte stack buffer, overwriting adjacent stack memory and potentiall...

CVE-2026-90781 alsa-lib through 1.2.16.1 Off-by-One Stack Buffer Overflow in __snd_ctl_ascii_elem_id_parse()

alsa-lib through 1.2.16.1 contains a stack buffer overflow in the sndctlasciielemidparse function that writes one byte past a 64-byte buffer when parsing a name= field with 64 or more characters. Attackers can supply a long control-element identifier string through saved state files or command-li...

cve-2021-3156

CVE-2021-3156 -- Baron Samedit Vulnerability Environment Create the image using Dockerfile root@kitploit: docker build -t cve-2021-3156:ubuntu2004 . Create a container using the image root@kitploit: docker run --rm -it cve-2021-3156:ubuntu2004 /bin/bash Vulnerability Cause In Sudo versions prior ...

Linux Distros Unpatched Vulnerability : CVE-2026-89442

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - platform/x86: ISST: Validate socket ID in closassoc ioctl isstifclosassoc validates the user- supplied socketid with 'socketid topologymaxpackages', but...

Linux Distros Unpatched Vulnerability : CVE-2026-89596

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - forcedeth: fix off-by-one when saving/restoring non-PCI config space nvsuspend and nvresume walk the non-PCI configuration space with for i = 0; i...

Linux Distros Unpatched Vulnerability : CVE-2026-81012

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - platform/x86: hp-bioscfg: fix off-by-one write in hpgetstringfrombuffer hpgetstringfrombuffer clamps the converted string length against the destination buffer...

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-2026-81012

A flaw was found in the Linux kernel's hp-bioscfg component. The hpgetstringfrombuffer function contains an off-by-one write vulnerability. This occurs because the NUL terminator can be written one byte beyond the allocated buffer, leading to a buffer overflow. An attacker could potentially explo...

CVE-2026-89596

A flaw was found in the Linux kernel's forcedeth driver. An off-by-one error in the nvsuspend and nvresume functions, which handle saving and restoring non-PCI configuration space, can lead to an out-of-bounds memory access. This occurs during system suspend and resume operations. If specific...

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...