[CLSA-2026:1786553393] Fix of 7 CVEs
Type:
security
Severity:
Important
Release date:
2026-08-12 16:50:07 UTC
Description:
* SECURITY UPDATE: tarfile.data_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory, so tarfile.extractall() could write files outside the destination directory. - debian/patches/CVE-2026-7774.patch: backport of cpython c063191c ([3.10] branch variant of 57841198, gh-149486). data_filter now validates the normalised link target that is actually written to disk, resolves a symlink's target relative to its member name with trailing separators stripped, and rejects link members that would replace the destination directory itself. - CVE-2026-7774 * SECURITY UPDATE: ftplib.ftpcp() still called parse227() directly and passed the source server's self-reported PASV IPv4 address to the target server's PORT command, so a malicious source FTP server could redirect the target's data connection to an arbitrary host:port (SSRF); the CVE-2021-4189 fix only covered FTP.makepasv(). - debian/patches/CVE-2026-8328.patch: backport of cpython eac4fe3b (gh-87451). ftpcp() now uses the source server's actual peer address unless trust_server_pasv_ipv4_address is set, the same rule FTP.makepasv() already applies. - CVE-2026-8328
Updated packages:
  • alt-python36_3.6.15-43_amd64.deb
    sha:9dc72e43a74bf513e7203b589fab60fff09344cd
  • alt-python36-debug_3.6.15-43_amd64.deb
    sha:4e008d8ebcfd5179fba499665723ac467754de4c
  • alt-python36-devel_3.6.15-43_amd64.deb
    sha:7a43dd3d620e2444f29dfa884673291cfae0fa3f
  • alt-python36-libs_3.6.15-43_amd64.deb
    sha:01a0809b9a2900d0da3f353d2c6ca8fa45e967e1
  • alt-python36-test_3.6.15-43_amd64.deb
    sha:dab9ccfb91f52921a1dc09cd89eb9f8f6b30b67a
  • alt-python36-tkinter_3.6.15-43_amd64.deb
    sha:b92b6f0fd8512beba86877c261658e3eb4cc2bbd
  • alt-python36-tools_3.6.15-43_amd64.deb
    sha:ffe33ab5240ff4ea28ddd004e3b6d5453b930e4a
Notes:
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