Release date:
2026-09-15 10:08:34 UTC
Description:
* SECURITY UPDATE: symlink attack on the daemon module-root chdir
- debian/patches/els/0031-CVE-2026-53784.patch: add
safe_open_no_attacker_symlinks() in util.c and confine the daemon
module-root chdir under use-chroot=no. els/0006 had hardened only the
relative branch of change_dir(); the absolute branch was still on a
plain chdir(dir)
- CVE-2026-53784
* SECURITY UPDATE: information disclosure and arbitrary write via symlinks
planted on operator-supplied paths
- debian/patches/els/0032-CVE-2026-53802-CVE-2026-53803.patch: open the
secrets file, "pid file", --config, motd, --password-file, --log-file,
--write-batch/--read-batch and the filter, merge-file,
--exclude-from/--include-from paths through
safe_open_no_attacker_symlinks()
- debian/patches/els/0037-CVE-2026-53802-files-from.patch: the same for
--files-from, which is opened in options.c and which upstream converted
separately, in 3ee00e00
- CVE-2026-53802
- CVE-2026-53803
* SECURITY UPDATE: arbitrary file write via an absolute --temp-dir or
--link-dest whose parent is flipped to a symlink mid-operation
- debian/patches/els/0033-CVE-2026-53795.patch: confine do_rename() and
do_link() in syscall.c through an ownership walk on the pinned parent
directory fd
- debian/patches/els/0039-CVE-2026-53795-exdev.patch: confine the same way
the copy_file() opens and the do_unlink() that robust_rename() falls back
to when the rename returns EXDEV, i.e. when an absolute --temp-dir or
--partial-dir is on another filesystem (upstream bf79a2a0)
- CVE-2026-53795
* These four CVEs were previously assessed as requiring the 3.5.0 path
resolution rewrite (54965efc, defd7110, b62d7ed6) and closed Won't Fix.
That assessment was wrong for CVE-2026-53784/53802/53803: upstream fixed
them on 2026-06-12 in a7c49e93, f2941575, 9bfa07e3 and 62bf55fc, nine days
before the rewrite and independent of it. CVE-2026-53795 does depend on
the rewrite; els/0033 covers only the two sinks it names and documents what
it leaves out
* SECURITY UPDATE: TOCTOU on the non-daemon receiver's destination chdir
- debian/patches/els/0034-CVE-2026-53796.patch: resolve the operator-named
destination through safe_open_no_attacker_symlinks() + fchdir, for both
the absolute and the relative branch of change_dir()
- CVE-2026-53796
* SECURITY UPDATE: path confinement bypass for a daemon module with a /./
inner boundary marker
- debian/patches/els/0035-CVE-2026-53793.patch: widen the four daemon
symlink-confinement gates from "am_daemon && !am_chrooted" to
"am_daemon && (!am_chrooted || module_dirlen)" so an inner module root
is treated as the trust boundary
- debian/patches/els/0040-CVE-2026-53793-basis-paths.patch: extend that
boundary to the two alternate-basis paths the gates do not reach -- the
generator's alt-dest basis stat (upstream 5ed0ab3f) and the
peer-supplied basis xname the receiver joins to an operator basedir
(upstream db284e22)
- CVE-2026-53793
* SECURITY UPDATE: symlink race in the non-daemon sender's source traversal
- debian/patches/els/0036-CVE-2026-53797.patch: open file content through
secure_relative_open() anchored at the transfer root under default
symlink handling, so a raced parent symlink cannot redirect the read
- debian/patches/els/0038-CVE-2026-53797-noatime.patch: apply O_NOATIME in
secure_relative_open() as do_open() did, so --noatime keeps working on
that open (and on the els/0006 daemon-sender one)
- CVE-2026-53797
* The three above come from openSUSE's backport of the same upstream commits
to rsync 3.2.3 (openSUSE:Leap:15.5:Update/rsync.45907, hardening patches
0108, 0107 and 0100). Four further CVEs from this disclosure remain open
against the package and are NOT addressed: CVE-2026-53785, CVE-2026-53801
and CVE-2026-70460 need the 3.5.0 held-dirfd resolver (upstream 3dddbde5;
openSUSE 0093/0094/0101 pull in held_dfd_for, link_stat_at, do_mkdir_at
and do_chmod_atfd), and CVE-2026-53799 needs the fd-based ACL/xattr family
(openSUSE 0118-0124, ~3300 lines incl. libacl and configure work)
* els/0037-0040 answer the code review of GitLab MR
secure-libraries/els-os/rsync!30: two of them close real gaps in the
patches above (--files-from, the EXDEV fallback), one restores --noatime,
and one completes the inner-module boundary. Each is a distinct upstream
commit, so each is a distinct patch rather than an edit of the patch it
follows
* The upstream regression tests named in the patch headers are not carried:
upstream ships them only as pytest testsuite/*_test.py files and 3.1.3 has
no pytest harness
Updated packages:
-
rsync_3.1.3-6+tuxcare.els6_amd64.deb
sha:8511d2a62936a9c32c84455d79ba274116ecaf03
-
rsync_3.1.3-6+tuxcare.els6_arm64.deb
sha:1938b936aebcb4e3b50d3892e2d25ceca7721737
-
rsync_3.1.3-6+tuxcare.els6_armel.deb
sha:eac3f60aa71a8f2628bd9f44949d3a7ed40cf753
Notes:
This page is generated automatically and has not been checked for errors. For clarification or
corrections please contact the
CloudLinux Packaging Team.