CVE-2026-49425

The compat32 kevent handler translates a 64-bit kevent struct into a stack- declared 32-bit struct. It did not first zero the stack struct. An unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information...

CVE-2026-49425

CVE-2026-49425 is a kernel stack information disclosure in the FreeBSD compat32 subsystem (the 32-bit compatibility layer for 64-bit platforms). The kevent() handler translates a 64-bit kevent struct into a stack-declared 32-bit struct without first zeroing it , allowing an unprivileged local use...

EUVD-2026-62346

The compat32 kevent handler translates a 64-bit kevent struct into a stack- declared 32-bit struct. It did not first zero the stack struct. An unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information...

CVE-2026-49425 Kernel stack disclosure in 32-bit compatibility support

The compat32 kevent handler translates a 64-bit kevent struct into a stack- declared 32-bit struct. It did not first zero the stack struct. An unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information...

The vulnerability of the compat32 subsystem in FreeBSD’s kernel allows a hacker to disclose protected information.

The vulnerability of the compat32 compatibility layer in the Linuxulator kernel of FreeBSD operating systems is related to the use of uninitialized variables. Exploiting this vulnerability can allow an attacker to disclose sensitive information that is protected by these layers...

CVE-2020-7460

In FreeBSD 12.1-STABLE before r363918, 12.1-RELEASE before p8, 11.4-STABLE before r363919, 11.4-RELEASE before p2, and 11.3-RELEASE before p12, the sendmsg system call in the compat32 subsystem on 64-bit platforms has a time-of-check to time-of-use vulnerability allowing a mailcious userspace...

CVE-2020-7460

In FreeBSD 12.1-STABLE before r363918, 12.1-RELEASE before p8, 11.4-STABLE before r363919, 11.4-RELEASE before p2, and 11.3-RELEASE before p12, the sendmsg system call in the compat32 subsystem on 64-bit platforms has a time-of-check to time-of-use vulnerability allowing a mailcious userspace...

CVE-2020-7460

The CVE-2020-7460 issue affects FreeBSD on 64-bit platforms where the 32-bit compat32 sendmsg path contains a TOCTOU vulnerability. A 32-bit or 64-bit process could trigger a mailcious userspace program to modify control message headers after validation, enabling kernel-level impact. Affected ran...

kernel security and bug fix update

2.6.9-89.35.1.0.1.EL - XEN fix cpu hotplug crash Joe Jin orabug 7521308 - XEN Bring up vcpus before khelper init Joe Jin orabug 7521308 - XEN flush the tlb cache immediately Dave McCracken, Scott Shi orabug 9138767 - fix skb alignment that was causing sendto to fail with EFAULT Olaf Kirch orabug...

kernel security and bug fix update

2.6.9-89.31.1.0.1.EL - XEN fix cpu hotplug crash Joe Jin orabug 7521308 - XEN Bring up vcpus before khelper init Joe Jin orabug 7521308 - XEN flush the tlb cache immediately Dave McCracken, Scott Shi orabug 9138767 - fix skb alignment that was causing sendto to fail with EFAULT Olaf Kirch orabug...

kernel security and bug fix update

2.6.9-89.0.26.0.1.EL - XEN fix cpu hotplug crash Joe Jin orabug 7521308 - XEN Bring up vcpus before khelper init Joe Jin orabug 7521308 - XEN flush the tlb cache immediately Dave McCracken, Scott Shi orabug 9138767 - fix skb alignment that was causing sendto to fail with EFAULT Olaf Kirch orabug...