setcred

FreeBSD setcred2 — 연구 아티팩트 이 하위 디렉토리는 FreeBSD 14.x 커널의 setcred2 스택 버퍼 오버플로우에 대한 분석 문서와 작동하는 익스플로잇을 수집합니다. 취약점 자체는 setcred.txt에 완전히 문서화되어 있습니다. 간단히 말하면: kernsetcredcopyinsuppgroups는 groups가 gidt 일 때 sizeofgroups를 사용하여 고정 크기 커널 스택 배열로의 copyin에 대해 4바이트가 아닌 8바이트 스트라이드를 생성합니다. 오버플로우는 권한 검사 전에 권한이 없는...

CVE-2026-45250

The setcred2 system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied list exceeds the capaci...

The vulnerability of the setcred() function in the operating system kernel of FreeBSD allows a perpetrator to execute arbitrary code, increase their privileges, or cause service failures.

The vulnerability of the setcred function in the operating system kernel of FreeBSD is related to buffer overflow in the stack. Exploiting this vulnerability can allow an attacker to execute arbitrary code, increase their privileges, or cause service failures...

CVE-2026-45250

The setcred2 system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied list exceeds the capaci...

CVE-2026-45250

CVE-2026-45250 concerns a stack buffer overflow in the FreeBSD kernel arising from setcred(2). The unprivileged user can trigger a copyin into a fixed-size kernel-stack array before validating the number of supplementary groups, causing a stack overflow when the list is large. This allows an unpr...

CVE-2026-45250 Stack buffer overflow via setcred(2)

The setcred2 system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied list exceeds the capaci...

EUVD-2026-31252

The setcred2 system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied list exceeds the capaci...

CVE-2026-45250

The setcred2 system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied list exceeds the capaci...

CVE-2026-45250 Stack buffer overflow via setcred(2)

The setcred2 system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied list exceeds the capaci...

Exploit for CVE-2026-45250

FreeBSD setcred2 — research artifacts This subdirectory col...

FreeBSD 安全漏洞

FreeBSD is a Unix-like operating system developed by the FreeBSD Foundation. There is a security vulnerability in FreeBSD, which stems from the setcred system call. This call copies a user-supplied supplementary group list into a fixed-size kernel stack buffer without verifying the length. This...

FreeBSD : FreeBSD -- Stack buffer overflow via setcred(2) (39728e41-54b5-11f1-8d7a-bc241121aa0a)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 39728e41-54b5-11f1-8d7a-bc241121aa0a advisory. The setcred2 system call is only available to privileged users. However, before the privilege level of...

PT-2026-42398

Name of the Vulnerable Software and Affected Versions FreeBSD versions 14.x Description A stack buffer overflow exists in the setcred2 system call. The issue occurs because a user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer before the privilege level of t...

FreeBSD Security Advisory - FreeBSD-SA-26:18.setcred

FreeBSD Security Advisory - The setcred2 system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the...

FreeBSD-SA-26:18.setcred

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:18.setcred Security Advisory The FreeBSD Project Topic: Stack buffer overflow via setcred2 Category: core Module: setcred Announced: 2026-05-20 Credits: Ryan...

FreeBSD -- Stack buffer overflow via setcred(2)

Problem Description: The setcred2 system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied li...

SUSE CVE-2009-0361

Russ Allbery pam-krb5 before 3.13, as used by libpam-heimdal, su in Solaris 10, and other software, does not properly handle calls to pamsetcred when running setuid, which allows local users to overwrite and change the ownership of arbitrary files by setting the KRB5CCNAME environment variable, a...