DEBIAN-CVE-2026-68186

In the Linux kernel, the following vulnerability has been resolved: binfmtmisc: set haveexecfd only once the interpreter is opened loadmiscbinary raises bprm-haveexecfd as soon as it sees the 'O' or 'C' flag. This happens well before it opens the interpreter. If that open fails the flag stays set...

UBUNTU-CVE-2026-68186

In the Linux kernel, the following vulnerability has been resolved: binfmtmisc: set haveexecfd only once the interpreter is opened loadmiscbinary raises bprm-haveexecfd as soon as it sees the 'O' or 'C' flag. This happens well before it opens the interpreter. If that open fails the flag stays set...

UBUNTU-CVE-2026-68187

In the Linux kernel, the following vulnerability has been resolved: exec: fix unsigned loop counter wrap in transferargstostack The stop value is derived from bprm-p PAGESHIFT. The index variable is an unsigned long. If bprm-p drops below PAGESIZE and stop becomes zero the loop condition index =...

CVE-2026-68187

In the Linux kernel, the following vulnerability has been resolved: exec: fix unsigned loop counter wrap in transferargstostack The stop value is derived from bprm-p PAGESHIFT. The index variable is an unsigned long. If bprm-p drops below PAGESIZE and stop becomes zero the loop condition index =...

CVE-2026-68187 exec: fix unsigned loop counter wrap in transfer_args_to_stack()

In the Linux kernel, the following vulnerability has been resolved: exec: fix unsigned loop counter wrap in transferargstostack The stop value is derived from bprm-p PAGESHIFT. The index variable is an unsigned long. If bprm-p drops below PAGESIZE and stop becomes zero the loop condition index =...

EUVD-2026-55288

In the Linux kernel, the following vulnerability has been resolved: exec: fix unsigned loop counter wrap in transferargstostack The stop value is derived from bprm-p PAGESHIFT. The index variable is an unsigned long. If bprm-p drops below PAGESIZE and stop becomes zero the loop condition index =...

Linux Distros Unpatched Vulnerability : CVE-2026-68186

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - binfmtmisc: set haveexecfd only once the interpreter is opened loadmiscbinary raises bprm-haveexecfd as soon as it sees the 'O' or 'C' flag. This happens well...

FreeBSD execve Full Control

The vulnerability of the execve system call in FreeBSD operating systems is related to synchronization errors when using shared resources. Exploiting this vulnerability can allow an attacker to gain full control over the system...

shellcode — Updated!

shellcode “A vulnerability provides an assembly language for a computer that has never been programmed before, and that was not designed with programmability in mind.” -- Halvar Flake A collection of new and old shellcode samples. Article https://hnsecurity.it/blog/new-and-old-shellcode-samples/...

CVE-2026-53352

A flaw was found in the Linux kernel. A race condition exists in the zapotherthreads function where job control flags are not properly cleared for the calling thread. This can occur when a multi-threaded process receives a stop signal, and one of its threads concurrently calls execve. The...

CVE-2026-53352

In the Linux kernel, the following vulnerability has been resolved: signal: clear JOBCTLPENDINGMASK for caller in zapotherthreads When a multi-threaded process receives a stop signal e.g., SIGSTOP, dosignalstop sets JOBCTLSTOPPENDING and JOBCTLSTOPCONSUME on all threads and sets...

UBUNTU-CVE-2026-53352

In the Linux kernel, the following vulnerability has been resolved: signal: clear JOBCTLPENDINGMASK for caller in zapotherthreads When a multi-threaded process receives a stop signal e.g., SIGSTOP, dosignalstop sets JOBCTLSTOPPENDING and JOBCTLSTOPCONSUME on all threads and sets...

CVE-2026-53352

In the Linux kernel, the following vulnerability has been resolved: signal: clear JOBCTLPENDINGMASK for caller in zapotherthreads When a multi-threaded process receives a stop signal e.g., SIGSTOP, dosignalstop sets JOBCTLSTOPPENDING and JOBCTLSTOPCONSUME on all threads and sets...

CVE-2026-53352

CVE-2026-53352 affects the Linux kernel and stems from a race in zap_other_threads() where the calling thread’s JOBCTL_PENDING_MASK is not cleared during thread-group destruction. When a multi-threaded process is stopped (SIGSTOP) and one thread execs, zap_other_threads() can abort the group-stop...

CVE-2026-53352 signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads()

In the Linux kernel, the following vulnerability has been resolved: signal: clear JOBCTLPENDINGMASK for caller in zapotherthreads When a multi-threaded process receives a stop signal e.g., SIGSTOP, dosignalstop sets JOBCTLSTOPPENDING and JOBCTLSTOPCONSUME on all threads and sets...

CVE-2026-53352: Concurrent Execution using Shared Resource with Improper Synchronization

In the Linux kernel, the following vulnerability has been resolved: signal: clear JOBCTLPENDINGMASK for caller in zapotherthreads When a multi-threaded process receives a stop signal e.g., SIGSTOP, dosignalstop sets JOBCTLSTOPPENDING and JOBCTLSTOPCONSUME on all threads and sets...

FreeBSD : FreeBSD -- Local privilege escalation via execve(2) TOCTOU race (4b0d0a49-74e1-11f1-958d-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 4b0d0a49-74e1-11f1-958d-bc241121aa0a advisory. During execve2 of a SUID binary, the new virtual address space is installed before the process...

FreeBSD Security Advisory - FreeBSD-SA-26:39.execve

FreeBSD Security Advisory - During execve2 of a SUID binary, the new virtual address space is installed before the process credentials are updated. During this window, a process running as the same user can access the target process's memory via procfs or linprocfs, because the kernel's debugging...

FreeBSD-SA-26:39.execve

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:39.execve Security Advisory The FreeBSD Project Topic: Local privilege escalation via execve2 TOCTOU race Category: core Module: execve Announced: 2026-06-30...

FreeBSD -- Local privilege escalation via execve(2) TOCTOU race

Problem Description: During execve2 of a SUID binary, the new virtual address space is installed before the process credentials are updated. During this window, a process running as the same user can access the target process's memory via procfs or linprocfs, because the kernel's debugging...