CLSA-2026-1791475845
See a problem?- Import Source
- https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1791475845.json
- JSON Data
- https://api.osv.dev/v1/vulns/CLSA-2026-1791475845
- Upstream
- Published
- 2026-10-08T23:16:00Z
- Modified
- 2026-10-26T09:32:04Z
- Summary
- Fix CVE(s): CVE-2026-87766
- Details
-
- SECURITY UPDATE: symlink traversal during sandbox setup lets a crafted
source tree redirect file/dir creation and mounts outside the sandbox
(sandbox escape)
- debian/patches/CVE-2026-87766.patch: resolve every destination inside /newroot and every source inside /oldroot a component at a time (safe_openat in utils.c), create and mount through O_PATH|O_NOFOLLOW fds passed to the privileged helper (bind_mount_fd), and refuse to mount on a symlink destination (bubblewrap.c, bind-mount.c, utils.c)
- CVE-2026-87766
- SECURITY UPDATE: symlink traversal during sandbox setup lets a crafted
source tree redirect file/dir creation and mounts outside the sandbox
(sandbox escape)
- References