Update: The version of 2.6.17 in edgy-proposed (linux- source-2.6.17-50.50) is *not fixed*. Although it should (IMHO) not cause the problems concerning permissions or stale NFS handles, it is missing another security fix (the one that originally caused the problem, from commit 7fc90ec93a5eb71f4b08403baf5ba7176b3ec6b1 in Linus' git tree). Users affected by the bug should therefore not try to solve the problem by installing 50.50 on their systems. Instead, pull commit d1bbf14f37261c2c0dba71404602e1ddcec069d2 mentioned above and patch the kernel source. This puts the problematic section of code in its original place again (the situation also seen in 50.50), but additionally adds similar code in the "else" brance of the "if (!fhp->fh_dentry)".
For those users unfamiliar with git, I have appended the patch for the correcting commit. ** Attachment added: "Patch from commit d1bbf14f37261c2c0dba71404602e1ddcec069d2 in main kernel tree" http://librarian.launchpad.net/6582861/patch2 -- Permission Denied on nfs clients for only some files https://launchpad.net/bugs/62308 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs