CVE-2026-31431-Analysis-and-Fix

CVE-2026-31431 "Copy Fail" — Technical Deep Dive Severity: CVSS 7.8 High Class: Local Privilege Escalation Introduced: Linux 4.14 2017 Fixed: commit a664bf3d603d 1. Background CVE-2026-31431 is a local privilege escalation flaw in the Linux kernel's algifaead module — the AEAD socket interface of...

CVE-2026-43284-DirtyFrag-PoC

CVE-2026-43284 — 4-byte XFRM/ESP Proof-of-concept local privilege escalation via XFRM/ESP page-cache corruption 4-byte write primitive · 48 iterations · 192-byte ELF overwrite · unprivileged user + netns Proof of concept Left: kernel preflight, setuid scan, and exploit chain · Right: root shell...

DEBIAN-CVE-2026-57160

PJSIP is a free and open source multimedia communication library written in C. Prior to commit d6a0e7f, a buffer overflow can occur in pjsipgenericarrayhdrprint in pjsip/src/pjsip/sipmsg.c, the function that serializes generic array headers such as Allow, Require, Supported, and Unsupported. Unde...

CVE-2026-57160

PJSIP is a free and open source multimedia communication library written in C. Prior to commit d6a0e7f, a buffer overflow can occur in pjsipgenericarrayhdrprint in pjsip/src/pjsip/sipmsg.c, the function that serializes generic array headers such as Allow, Require, Supported, and Unsupported. Unde...

Astra Linux – Vulnerability in dnsmasq

A single-byte, non-arbitrary write/use-after-free flaw was discovered in dnsmasq. This flaw allows an attacker to send a crafted packet processed by dnsmasq, potentially causing a denial of service...

EUVD-2026-63508

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an off-by-one stack buffer overflow in evdns.c when dnsnametolabels formats a name-bearing DNS record at the end of the 64 KB stack buffer allocated by evdnsserverrequestformatresponse. The final-label check...

ANT-2026-3JR8RVFB · Leptonica · Heap Buffer Underflow

heap-buffer-overflow medium Severity Claude medium · Security research firm medium · Maintainer - Discovered by Claude Mythos Preview REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Trail of Bits. ANT-2026-3JR8RVFB: Heap buffer underwrite via negativ...

SUSE CVE-2026-14679

Stack buffer overflow in PostgreSQL argument name matching allows an object creator to achieve unknown impacts via OUT parameter count. The attack can write only 0x0 and 0x1 bytes. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected...

CVE-2026-62349

TDengine 3.4.1.6 and earlier contains an off-by-one/write vulnerability in source/libs/parser/src/parUtil.c: trimString() only checks a single-byte space before handling SQL string escape sequences (%, _, or \x), enabling a one-byte out-of-bounds write to the stack buffer tmpTokenBuf. This can le...

CVE-2026-62349

TDengine is an open source, time-series database optimized for Internet of Things devices. In 3.4.1.6 and earlier, source/libs/parser/src/parUtil.c trimString checks space for only one byte before processing SQL string escape sequences %, , or \x, allowing a one-byte out-of-bounds write to the...

CVE-2026-56373

ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that uses a stale pointer when memory allocation fails. Attackers can trigger this vulnerability by processing malicious PDB files to cause crashes or write a single zero byte to freed memory...

UBUNTU-CVE-2026-56373

ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that uses a stale pointer when memory allocation fails. Attackers can trigger this vulnerability by processing malicious PDB files to cause crashes or write a single zero byte to freed memory...

CVE-2026-56373

ImageMagick (before 7.1.2-15) contains a use-after-free vulnerability in the PDB decoder that uses a stale pointer when memory allocation fails. Attackers can trigger crashes or write a single zero byte to freed memory by processing malicious PDB files. The issue is caused by a use-after-free in ...

CVE-2026-56373 ImageMagick - Use-After-Free Write in PDB Decoder

ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that uses a stale pointer when memory allocation fails. Attackers can trigger this vulnerability by processing malicious PDB files to cause crashes or write a single zero byte to freed memory...

CVE-2026-53134

A vulnerability in the Linux kernel netfilter NFT_FIB code (CVE-2026-53134) could leak uninitialized kernel stack via the OIFNAME result register on certain lookup-fail paths. The issue stems from NFT_FIB_RESULT_OIFNAME writes only a single byte and leaves the remaining IFNAMSIZ span stale in nft...

CVE-2026-56114

dhcpcd through 10.3.2, fixed in commit 2f00c7b, contains a one-byte stack out-of-bounds write vulnerability in dhcp6makemessage in src/dhcp6.c that allows unauthenticated same-link attackers to write beyond a fixed local buffer by serializing an oversized RFC6603 OPTIONPDEXCLUDE option body...

CVE-2026-5068 bt: l2cap le coc: remote oob write via seg counter stored in net_buf user_data

A remote, unauthenticated BLE peer can trigger a 2-byte out-of-bounds write in the Bluetooth host during L2CAP LE CoC SDU reassembly. When the application enables segmentation via chanops.allocbuf and the chosen RX pool has a userdatasize smaller than 2 bytes, the segmentation counter stored in t...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: tipc: fixed an information leak in tipctopsrvkernsubscr A 8-byte write was used to initialize sub.usherhandle in tipctopsrvkernsubscr. Otherwise, four bytes remained uninitialized when calling setsockopt..., SOLTIPC,.... This...

CVE-2026-44215

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a one-byte heap out-of-bounds null write exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS filesystem image. The attacker controls the byte offset of th...

CVE-2026-44215

NanaZip is an open source file archive. From 5.0.1252.0 to before 6.0.1698.0, a one-byte heap out-of-bounds null write exists in the UFS/UFS2 filesystem image parser in NanaZip. The vulnerability is triggered when opening a crafted UFS filesystem image. The attacker controls the byte offset of th...