** Patch added: "lp-1940656-1-srp-fix-double-free.patch" https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1940656/+attachment/5519401/+files/lp-1940656-1-srp-fix-double-free.patch
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to openssl in Ubuntu. https://bugs.launchpad.net/bugs/1940656 Title: Potential use after free bugs in 1.1.1 Status in openssl package in Ubuntu: Fix Released Status in openssl source package in Focal: New Bug description: [Impact] * There have been multiple use-after-free bugs fixed in OpenSSL 1.1.1 stable branches which have not yet been applied in Focal. They are difficult to reproduce, often require an engine to be used, and somehow fail, as these use-after-free bugs are all in error conditions and error paths. Usually fixing local configuration, and making engine available is the right solution. It is however better to return errors than crash. These patches are in 1.1.1h+ and openssl-3. [Test Plan] * The fixes were applied upstream without clear reproducers, or unit tests * Check that all autopkgtests pass and there no regressions * Configure and use openssl with any engine and ensure that it continues to work [Where problems could occur] * There will be behaviour change, such that multithreaded applications may now notice Null pointers from the openssl engine apis, when previously they saw valid pointers which were freed already. Meaning that on connection failures, daemon or application shutdowns, different messages might be generated i.e. invalid engine context, unallocated methods, instead of crashing with double free. [Other Info] * Multiple customers are using openssl 1.1.1 with engines these days, reporting various issues, it is better to have more resilient openssl w.r.t. engine use in case of engine missuse. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1940656/+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
