how2heap

Educational Heap Exploitation This repo is for learning various heap exploitation techniques. We use Ubuntu's Libc releases as the gold-standard. Each technique is verified to work on corresponding Ubuntu releases. You can run apt source libc6 to download the source code of the Libc you are using...

VLC_CVE-2021-25804_Analysis

An AVI file can have multiple tracks. For example an audio track and a video track. In order to parse an arbitrary number of tracks VLC first must determine if a given track is finished and playable. Two variables are set up with this purpose in mind. Both named itrack. The variable psys...

CVE-2026-18743 Popt-devel: popt-static: short realloc in poptconfigfiletostring

A flaw was found in popt. This vulnerability allows an attacker to provide specially crafted configuration content to a host, which, when loaded, can lead to a small memory corruption issue. This occurs because of an error in how the poptConfigFileToString function reallocates memory for buffers...

CVE-2026-18743

popt (specifically the poptConfigFileToString function in popt-static/popt-devel) contains a short realloc bug that can cause heap metadata corruption when a host loads specially crafted configuration content. Successful exploitation results in a low-impact denial of service due to process unavai...

CVE-2026-18743 Popt-devel: popt-static: short realloc in poptconfigfiletostring

A flaw was found in popt. This vulnerability allows an attacker to provide specially crafted configuration content to a host, which, when loaded, can lead to a small memory corruption issue. This occurs because of an error in how the poptConfigFileToString function reallocates memory for buffers...

CVE-2026-80600

In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: acquire ARP hw source only after skb realloc The pskbmaypull called by batadvgetvid could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an...

CVE-2026-80671 perf sched: Fix register_pid() overflow, strcpy, and BUG_ON

In the Linux kernel, the following vulnerability has been resolved: perf sched: Fix registerpid overflow, strcpy, and BUGON registerpid has several issues when processing untrusted perf.data: 1. Integer overflow: pid + 1 sizeofstruct taskdesc can wrap to a small value on 32-bit systems when pid i...

EUVD-2026-67477

In the Linux kernel, the following vulnerability has been resolved: batman-adv: gw: acquire ethernet header only after skb realloc The pskbmaypull called by batadvgetvid could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an...

CVE-2026-80600

In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: acquire ARP hw source only after skb realloc The pskbmaypull called by batadvgetvid could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an...

CVE-2026-80601

CVE-2026-80601 is a use-after-free vulnerability in the batman-adv (Broadcast and Forwarding in Multi-Hop Wireless Mesh Networks) module of the Linux kernel , specifically in the gateway path. The function batadv_get_vid() calls pskb_may_pull(), which can reallocate the buffer behind the skb. Var...

CVE-2026-80601

In the Linux kernel, the following vulnerability has been resolved: batman-adv: gw: acquire ethernet header only after skb realloc The pskbmaypull called by batadvgetvid could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an...

Astra Linux – Vulnerability in netcdf

A issue was discovered in ezXML 0.8.3 through 0.8.6. The function ezxmlcharcontent attempts to use realloc on a block that has not been allocated, resulting in an invalid free operation and a segmentation fault...

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

In the Linux kernel, the following vulnerabilities have been resolved: “recordmcount”: Fixed memory leaks in the uwrite function. “Common realloc mistake”: The “file.Append” pointer was set to null, but it wasn’t freed upon failure...

AZL-97182 CVE-2026-74705 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: udp: fix potential use-after-free in tunnel segmentation skbudptunnelsegment gets the UDP header before ensuring the tunnel header is in the skb head. If the pull reallocates skb-head, the saved UDP header pointer is no longer...

CVE-2026-72393

A flaw was found in the Linux kernel's fbnic Ethernet driver. When the fbnictxlso function reallocates a socket buffer skb, it fails to update a cached pointer to shared information. This can lead to a use-after-free vulnerability, where the driver attempts to access memory that has already been...

popt-devel: popt-static: Short realloc in poptConfigFileToString

A flaw was found in popt. This vulnerability allows an attacker to provide specially crafted configuration content to a host, which, when loaded, can lead to a small memory corruption issue. This occurs because of an error in how the poptConfigFileToString function reallocates memory for buffers...

ANT-2026-F1GCJ0JY · graphicsmagick · Use-after-free

use-after-free medium Severity Claude critical · Security research firm medium · Maintainer - Discovered by Claude Mythos Preview REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Ada Logics. ANT-2026-F1GCJ0JY: Use-after-free in miff.c:1048...

Linux Distros Unpatched Vulnerability : CVE-2026-72393

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - eth: fbnic: don't cache shinfo across skb realloc fbnictxlso calls skbcowhead which may reallocate the skb including the shared info. We can't use the pointer...

Linux Distros Unpatched Vulnerability : CVE-2026-72233

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - batman-adv: bla: reacquire gw address after skb realloc The pskbmaypull called by batadvblaisbackbonegw could reallocate the buffer behind the skb. Variables...

Linux Distros Unpatched Vulnerability : CVE-2026-72235

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - batman-adv: retrieve ethhdr after potential skb realloc on RX pskbmaypull in batadvinterfacerx could reallocate the buffer behind the skb. Variables which were...