SECURITY UPDATE: configuration file injection via carriage returns in
written option values
debian/patches/CVE-2026-0864.patch: normalise CR and CRLF, and not
only LF, into '\n\t' continuation lines when writing option values in
RawConfigParser.write() in Lib/ConfigParser.py, so that an
attacker-controlled value can no longer inject additional sections,
keys and values into the written file
CVE-2026-0864
SECURITY UPDATE: CPU denial-of-service in tarfile streaming mode via a
member size declared past the end of the stream
debian/patches/CVE-2026-11972.patch: stop _Stream.seek() at the first
empty read instead of looping once per attacker-declared block against
an already-exhausted stream in Lib/tarfile.py