[CLSA-2026:1785340982] Fix CVE(s): CVE-2026-11386, CVE-2026-12391, CVE-2026-9494
Type:
security
Severity:
Important
Release date:
2026-07-29 16:03:13 UTC
Description:
* Bump epoch to supersede the vendor package in the ELS channel (matches the ubuntu16/ubuntu18 ELS branches). * Add gpg to Build-Depends: the build-time test suite (uaclient/tests/test_gpg.py) invokes the gpg binary, which is not present in the minimal ELS build chroot. * Add debian/mark_skip_pytests.sh and invoke it from debian/rules: on FIPS-capable build hosts running in a disabled state, some status/FIPS pytests fail at build time; skip only those, only in that environment (matches the ubuntu16/ubuntu18 ELS branches). * Skip tools/check-versions-are-consistent.py in override_dh_auto_build: its regex does not handle a package epoch and misparses our 1:34~20.04+tuxcare.elsN version, aborting the build; version.py already matches the shipped upstream version (34). * SECURITY UPDATE: Pro bearer token exposed via apt-helper command line - Write APT credentials to a temporary 0600 auth file and pass a credential-free URL to apt-helper, instead of embedding the token in the download-file URL argument where it leaked to local users via /proc//cmdline. Source tarball re-packed with the fix (3.0 native). - cve-2026-9494 * SECURITY UPDATE: APT source injection via crafted contract-server response - validate contract directives (aptURL, suites, additionalPackages) to reject newline/CR/NUL/space characters, preventing injection of attacker-controlled lines into root-owned apt sources and the apt-get install invocation. Source tarball re-packed with the fix (3.0 native). - cve-2026-11386 * SECURITY UPDATE: symlink file disclosure in "pro collect-logs" - Skip symlinked user log files and create the diagnostic archive exclusively (x:gz) with a root-only umask so an existing output file or symlink is not followed or overwritten. Source tarball re-packed with the fix (3.0 native). - cve-2026-12391
Updated packages:
  • ubuntu-advantage-pro_34~20.04+tuxcare.els1_all.deb
    sha:989798305ea4bc160227e153415ae176c57d833e
  • ubuntu-advantage-tools_34~20.04+tuxcare.els1_all.deb
    sha:661b1c90d8f14d31f5f07f89af296e33e666a184
  • ubuntu-pro-auto-attach_34~20.04+tuxcare.els1_all.deb
    sha:1440aa7724243d7664d95076e76c84f47010edae
  • ubuntu-pro-client_34~20.04+tuxcare.els1_amd64.deb
    sha:610c09b26ee176fead15476b6ebe3af46dba6c7b
  • ubuntu-pro-client-l10n_34~20.04+tuxcare.els1_amd64.deb
    sha:bd2b9157ed02db8bf4e74c61ca83c67062c3a90f
Notes:
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