CLSA-2026-1789737518
See a problem?- Import Source
- https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789737518.json
- JSON Data
- https://api.osv.dev/v1/vulns/CLSA-2026-1789737518
- Upstream
- Published
- 2026-09-18T13:18:55Z
- Modified
- 2026-10-26T09:43:29Z
- Summary
- rsync: Fix of 8 CVEs
- Details
-
- CVE-2026-70461: count a trailing backslash when sizing the implied-include filter rule, so a --files-from entry ending in a backslash can no longer write one attacker-controlled byte past the rule's heap allocation
- CVE-2026-70456: reserve the slot read_args() needs for its trailing NULL, so a peer argument count landing exactly on maxargs cannot write one pointer past the argv allocation
- CVE-2026-70458: refuse FLAG_HLINKED when hard links are not in use and on a directory entry, so a peer cannot displace the checksum slot through hard-link extras that were never reserved; gate the hard-link basis check on S_ISREG(file->mode) so a hard-linked symlink or device cannot read a checksum slot it never had; also set sender_keeps_checksum in the daemon-as-sender path so %C cannot log adjacent heap
- CVE-2026-70462: reject a non-positive MSG_IO_TIMEOUT from the peer and cap it at 24 hours, and make set_io_timeout()'s arithmetic overflow-safe, so a crafted server can neither disable the client's --timeout nor spin it at 100% CPU on a negative select() timeout
- CVE-2026-70453: bound the hash_search() chain walk at MAX_CHAIN_LEN, so a basis file whose weak checksums all collide cannot drive an O(file_size * chain_length) scan
- CVE-2026-53785: create each implied parent directory through do_mkdir_at() against a held O_NOFOLLOW directory fd, so a parent component raced into a symlink can no longer place --relative directories outside the destination
- CVE-2026-53794: reject --max-alloc=0, which disabled the per-allocation size cap entirely instead of enforcing a zero one
- CVE-2026-53790: shell-escape %VAR% expansions for their quoting context in the daemon's exec hooks and refuse a peer value holding shell syntax, quote the program names the rsync-ssl helper execs, and widen the remote-shell safe_arg() escape set
- References
-
- https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1789737518.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-53785
- https://nvd.nist.gov/vuln/detail/CVE-2026-53790
- https://nvd.nist.gov/vuln/detail/CVE-2026-53794
- https://nvd.nist.gov/vuln/detail/CVE-2026-70453
- https://nvd.nist.gov/vuln/detail/CVE-2026-70456
- https://nvd.nist.gov/vuln/detail/CVE-2026-70458
- https://nvd.nist.gov/vuln/detail/CVE-2026-70461
- https://nvd.nist.gov/vuln/detail/CVE-2026-70462
Affected packages
TuxCare:AlmaLinux:9.2 / rsync
Package
- Name
- rsync
- Purl
- pkg:rpm/tuxcare/rsync?distro=almalinux-9.2