CVE-2026-45259

sigqueue2 was marked as permitted in capability mode with the introduction of Capsicum in 2011, but the implementation of kernsigqueue did not include a capability mode check restricting signal delivery to the calling process's own PID. A process in capability mode can use sigqueue2 to send signa...

CVE-2026-45259

sigqueue2 was marked as permitted in capability mode with the introduction of Capsicum in 2011, but the implementation of kernsigqueue did not include a capability mode check restricting signal delivery to the calling process's own PID. A process in capability mode can use sigqueue2 to send signa...

CVE-2026-45259 sigqueue(2) missing capability mode restriction

sigqueue2 was marked as permitted in capability mode with the introduction of Capsicum in 2011, but the implementation of kernsigqueue did not include a capability mode check restricting signal delivery to the calling process's own PID. A process in capability mode can use sigqueue2 to send signa...

CVE-2026-45259

CVE-2026-45259 affects FreeBSD where sigqueue(2) was allowed in capability mode but kern_sigqueue lacked a capability-mode check to restrict signal delivery to the caller’s own PID. The issue enables a capability-mode sandboxed process to signal other processes (including SIGKILL/SIGSTOP) within ...

PT-2026-53061

Name of the Vulnerable Software and Affected Versions FreeBSD affected versions not specified Description The implementation of the kern sigqueue function failed to include a capability mode check. This allows a process operating in Capsicum capability mode—a security framework that restricts...

FreeBSD : FreeBSD -- sigqueue(2) missing capability mode restriction (94f20492-6473-11f1-958d-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 94f20492-6473-11f1-958d-bc241121aa0a advisory. sigqueue2 was marked as permitted in capability mode with the introduction of Capsicum in 2011, but the...

FreeBSD Security Advisory - FreeBSD-SA-26:28.capsicum

FreeBSD Security Advisory - sigqueue2 was marked as permitted in capability mode with the introduction of Capsicum in 2011, but the implementation of kernsigqueue did not include a capability mode check restricting signal delivery to the calling process's own PID...

FreeBSD-SA-26:28.capsicum

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:28.capsicum Security Advisory The FreeBSD Project Topic: sigqueue2 missing capability mode restriction Category: core Module: capsicum Announced: 2026-06-09...

FreeBSD -- sigqueue(2) missing capability mode restriction

Problem Description: sigqueue2 was marked as permitted in capability mode with the introduction of Capsicum in 2011, but the implementation of kernsigqueue did not include a capability mode check restricting signal delivery to the calling process's own PID. Impact: A process in capability mode ca...

Design/Logic Flaw

ping reads raw IP packets from the network to process responses in the prpack function. As part of processing a response ping has to reconstruct the IP header, the ICMP header and if present a "quoted packet," which represents the packet that generated an ICMP error. The quoted packet again has a...

FreeBSD-SA-23:13.capsicum

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-23:13.capsicum Security Advisory The FreeBSD Project Topic: copyfilerange insufficient capability rights check Category: core Module: capsicum Announced:...

Buffer Overflow vulnerability in FreeBSD

Threat Level Vulnerability Report For a detailed threat advisory, download the pdf file here Summary A vulnerability in FreeBSD ping has been discovered that could allow remote code execution. A remote host can trigger the memory safety bug, causing the ping program to crash. Ping runs inside a...

FreeBSD -- Stack overflow in ping(8)

Problem Description: ping reads raw IP packets from the network to process responses in the prpack function. As part of processing a response ping has to reconstruct the IP header, the ICMP header and if present a "quoted packet," which represents the packet that generated an ICMP error. The quot...