writeup_split

Abstract CVE-2024-0684 A vulnerability in the GNU coreutils "split" program allows for a heap buffer overflow with user controlled data. It was introduced in 40bf1591bb4362fa91e501bcec7c2029c5f65a43 on 2023-03-04. A fix has been released with c4c5ed8f4e9cd55a12966d4f520e3a13101637d9 on 2024-01-17...

coreutils: GNU coreutils unexpand: Denial of Service via crafted tab stop values

A flaw was found in GNU coreutils, specifically in the unexpand utility. This vulnerability, a heap-based buffer overflow, occurs due to an integer overflow when unexpand processes unusually large tab stop values provided by a local attacker. This can lead to an undersized memory buffer, allowing...

Unity Linux 20.1070a Security Update: coreutils (UTSA-2026-104994)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104994 advisory. GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t values. Th...

OESA-2026-3416 coreutils security update

These are the GNU core utilities. This package is the combination of the old GNU fileutils, sh-utils, and textutils packages. Security Fixes: GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t...

OESA-2026-3391 coreutils security update

These are the GNU core utilities. This package is the combination of the old GNU fileutils, sh-utils, and textutils packages. Security Fixes: GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t...

OESA-2026-3390 coreutils security update

These are the GNU core utilities. This package is the combination of the old GNU fileutils, sh-utils, and textutils packages. Security Fixes: GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t...

JLSEC-2026-1196 GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow...

GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t values. The multiplication used to calculate the allocation size can wrap around, resulting in an undersized buffer. When processing crafted...

CVE-2026-56391

A flaw was found in GNU coreutils uniq. When processing specially crafted multibyte input with the --check-chars option, an attacker can trigger an out-of-bounds read. This vulnerability can lead to a denial of service DoS due to an application crash and potentially expose sensitive information...

Linux Distros Unpatched Vulnerability : CVE-2026-56391

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - GNU coreutils uniq is vulnerable to an outofbounds read due to incorrect handling of multibyte input when the -w --check-chars option is used. The findfield...

Linux Distros Unpatched Vulnerability : CVE-2026-56392

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t value...

CVE-2026-56392

GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t values. The multiplication used to calculate the allocation size can wrap around, resulting in an undersized buffer. When processing crafted...

UBUNTU-CVE-2026-56392

GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t values. The multiplication used to calculate the allocation size can wrap around, resulting in an undersized buffer. When processing crafted...

CVE-2026-56392

GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t values. The multiplication used to calculate the allocation size can wrap around, resulting in an undersized buffer. When processing crafted...

CVE-2026-56392 Heap-based Buffer Overflow in GNU coreutils

GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t values. The multiplication used to calculate the allocation size can wrap around, resulting in an undersized buffer. When processing crafted...

CVE-2026-56392

GNU coreutils unexpand is vulnerable to a heap-based buffer overflow caused by an integer overflow in the multiplication that calculates buffer allocation size when processing large tab stop (-t ) values. The wrap-around produces an undersized buffer, and subsequent writes during crafted input pr...

CVE-2026-56392

GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t values. The multiplication used to calculate the allocation size can wrap around, resulting in an undersized buffer. When processing crafted...

CVE-2026-56392 Heap-based Buffer Overflow in GNU coreutils

GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t values. The multiplication used to calculate the allocation size can wrap around, resulting in an undersized buffer. When processing crafted...

CVE-2026-56392

GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop -t values. The multiplication used to calculate the allocation size can wrap around, resulting in an undersized buffer. When processing crafted...

CVE-2026-56391

GNU coreutils uniq is vulnerable to an out‑of‑bounds read due to incorrect handling of multibyte input when the -w --check-chars option is used. The findfield function miscalculates the byte length of characters by repeatedly processing a fixed pointer instead of advancing through the input,...

CVE-2026-56391 Out‑of‑bounds Read in GNU coreutils

GNU coreutils uniq is vulnerable to an out‑of‑bounds read due to incorrect handling of multibyte input when the -w --check-chars option is used. The findfield function miscalculates the byte length of characters by repeatedly processing a fixed pointer instead of advancing through the input,...