** Tags added: kernel-daily-bug -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to zlib in Ubuntu. https://bugs.launchpad.net/bugs/1990379
Title: [UBUNTU 20.04] zlib: inflate() does not update strm.adler if DFLTCC is used Status in Ubuntu on IBM z Systems: In Progress Status in zlib package in Ubuntu: In Progress Status in zlib source package in Focal: Triaged Status in zlib source package in Jammy: Triaged Status in zlib source package in Kinetic: Won't Fix Bug description: SRU Justification: ------------------ [ Impact ] * The zlib function inflate() does not update strm.adler in case DFLTCC is used. * This issue was exposed by Java Certification Kit (JCK) running on z15 hardware and newer and impacts all JDK versions (8,11,17, etc.) that use the system default settings. * The JCK failure impacts the ability to certify Java SDKs on this platform/Linux-distribution combination. * On top the incorrect alder32 result may cause functional issues with Java applications that depend on the result. [ Test Plan ] * An affected Ubuntu release (20.04, 22.04 and 22.10) installed on a z15/LinuxONE III or newer system is needed. * Then it's possible to test the updated package with the help of a small test program (in C) that makes use of the zlib1g library or run the Java Certification Kit. * Test will be done by IBM. [ Where problems could occur ] * The patch is a one-line change: https://launchpadlibrarian.net/626003193/410-lp1990379.patch and there are not many issues to expect. * There could be a potential problem with the adler field in the strm struct. For example in case the struct is not as assumed or contains and unexpected value, which would then ripple through the other fields, too. * Structural changes could be identified with a test build that was done for all affected Ubuntu releases and for all major architectures: https://launchpad.net/~fheimes/+archive/ubuntu/lp1990379 [ Other Info ] * The patch itself is the same for all zlib version in 20.04, 22.04 and 22.10 - no further adjustments were needed. * This bug (LP#1990379) is solved in combination with LP#1982583, so that only one package update is needed. However, this bug affects Kinetic, jammy and Focal, but LP#1982583 only Jammy and Kinetic. * The debdiffs for Kinetic and Jammy should be taken from LP#1982583, and the remaining debdiff for Focal from here. __________ == Comment: #0 - Ilya Leoshkevich <i...@de.ibm.com> - 2022-09-21 05:02:24 == inflate() does not update strm.adler if DFLTCC is used. Found with a JDK test. zlib-ng PR: https://github.com/zlib-ng/zlib-ng/pull/1349 Updated zlib PR: https://github.com/madler/zlib/pull/410 zlib tag: https://github.com/iii-i/zlib/releases/tag/dfltcc-20220920 zlib diff: https://github.com/madler/zlib/compare/e6aed68ff815be74855ec6a19d6ae35065a4adb4..171d0ff3c9ed40da0ac14085ab16b766b1162069#diff-325baa03829572a9f26b4bb8b3cada1ddc637854529d6a6cb111b8c3ca785620 Ubuntu 20.04 and later need to be fixed. --- External link: https://warthogs.atlassian.net/browse/PEI-28 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1990379/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
