** Description changed: - kernel: mm: read_pmd_atomic: 32bit PAE pmd walk vs pmd_populate SMP race - condition. When holding the mmap_sem for reading, pmd_offset_map_lock - should only run on a pmd_t that has been read atomically from the pmdp - pointer, otherwise we may read only half of it leading to this crash. + The Linux kernel before 3.4.5 on the x86 platform, when Physical Address + Extension (PAE) is enabled, does not properly use the Page Middle + Directory (PMD), which allows local users to cause a denial of service + (panic) via a crafted application that triggers a race condition. Break-Fix: - 26c191788f18129af0eb32a358cdaea0c7479626
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1002503 Title: CVE-2012-2373 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1002503/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
