[email protected] (Ludovic Courtès) skribis: > Leo Famulari <[email protected]> skribis: > >> These buffer overflows in libpng were announced today: >> https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-8126 >> >> This patch updates libpng to 1.5.24, which is claimed to be free of the bugs. > > In commit 1b076e6 on ‘master’, I made 1.5.24 a replacement for the > current libpng (info "(guix) Security Updates")
As Mark rightfully reminded me, the grafting mechanism has a shortcoming: it is not recursive. IOW, if a package has a direct dependency on libpng, it is appropriately grafted to refer to the new libpng. However, if a package depends on libfoo, which in turn depends on libpng, then that package will keep referring to the old libfoo, which refers to the vulnerable libpng. I’ll see how ‘graft-derivation’ in (guix derivations) can be made recursive. Ludo’.
