CVE-2026-78409

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...

UBUNTU-CVE-2026-78409

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...

EUVD-2026-70107

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...

CVE-2026-78409 Util-linux: util-linux: x-mount.subdir detached-tree resolution can escape via intermediate symlinks

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...

CVE-2026-78409

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...

CVE-2026-78409 Util-linux: util-linux: x-mount.subdir detached-tree resolution can escape via intermediate symlinks

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...

CVE-2026-78409

A flaw in util-linux 's X-mount.subdir mount option allows a local unprivileged user to escape the intended subdirectory and attach an arbitrary host path at the intended mountpoint. On Linux 6.15 and later , the option takes a detached-tree fast path that calls open_tree() with AT_SYMLINK_NOFOLL...

CVE-2026-78409

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...

CVE-2026-78409

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...

humanfs: Recursive copy follows symlinked files and copies data from outside the source tree

Summary @humanfs/node does not treat symlinks as a separate case during copy operations. A symlink placed inside an attacker-controlled source tree can make copyAll read and copy the contents of any file readable by the process, even when that file is outside the directory being copied. Details T...

GHSA-P498-V437-472G humanfs: Recursive copy follows symlinked files and copies data from outside the source tree

Summary @humanfs/node does not treat symlinks as a separate case during copy operations. A symlink placed inside an attacker-controlled source tree can make copyAll read and copy the contents of any file readable by the process, even when that file is outside the directory being copied. Details T...

OPENSUSE-SU-2026:21738-1 Security update for libvirt

This update for libvirt fixes the following issues: - CVE-2026-18917: integer overflow in NodeGetFreePages RPC handler leads to heap buffer overflow and allows for possible local privilege escalation bsc1275863. - CVE-2026-61477: newline injection in network XML DNS TXT/SRV fields allows for...

SUSE-SU-2026:23460-1 Security update for libvirt

This update for libvirt fixes the following issues: - CVE-2026-18917: integer overflow in NodeGetFreePages RPC handler leads to heap buffer overflow and allows for possible local privilege escalation bsc1275863. - CVE-2026-61477: newline injection in network XML DNS TXT/SRV fields allows for...

SUSE-SU-2026:23603-1 Security update for libvirt

This update for libvirt fixes the following issues: - CVE-2026-18917: integer overflow in NodeGetFreePages RPC handler leads to heap buffer overflow and allows for possible local privilege escalation bsc1275863. - CVE-2026-61477: newline injection in network XML DNS TXT/SRV fields allows for...

SUSE-SU-2026:23445-1 Security update for libvirt

This update for libvirt fixes the following issues: - CVE-2026-18917: Integer overflow in NodeGetFreePages RPC handler leading to heap buffer overflow bsc1275863. - CVE-2026-61477: newline injection in network XML DNS TXT/SRV fields allows dnsmasq config directive injection bsc1274576. -...

SUSE-SU-2026:23515-1 Security update for libvirt

This update for libvirt fixes the following issues: - CVE-2026-18917: Integer overflow in NodeGetFreePages RPC handler leading to heap buffer overflow bsc1275863. - CVE-2026-61477: newline injection in network XML DNS TXT/SRV fields allows dnsmasq config directive injection bsc1274576. -...

CVE-2026-70622

A flaw was found in tar-rs. This vulnerability, a symlink escape, allows a local attacker to read sensitive files outside of the intended directory. By planting specially crafted symbolic links in an untrusted directory, an attacker can trick a privileged process, when archiving that directory,...

cmd/go: golang: Go 'go bug' command: Arbitrary file overwrite via symlink attack

A flaw was found in the 'go bug' command within the Go programming language tools. This command writes to temporary files with predictable names. A local attacker with access to the system's temporary directory could exploit this by creating a symbolic link symlink with one of these predictable...

PT-2026-90713

Sandbox escape: symlink traversal via /oldroot allows writing files outside sandbox during setup...

CVE-2026-78409: Improper Link Resolution Before File Access

The X-mount.subdir option uses a detached-tree fast path on Linux 6.15 and later and passes the configured subdirectory to opentree with ATSYMLINKNOFOLLOW. That flag does not stop intermediate symlink traversal or keep resolution inside the newly mounted filesystem. A local unprivileged user with...