Linux distributions that have not patched their long-term kernels with https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015). This kernel vulnerability was fixed in April 2015 by commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (backported to Linux 3.10.77 in May 2015), but it was not recognized as a security threat. With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base. Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the "gap" between the stack and the binary.
History

Tue, 10 Sep 2024 05:30:00 +0000

Type Values Removed Values Added
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2017-10-04T01:00:00

Updated: 2024-09-10T03:55:14.762Z

Reserved: 2017-10-03T00:00:00

Link: CVE-2017-1000253

cve-icon Vulnrichment

Updated: 2024-08-05T22:00:39.693Z

cve-icon NVD

Status : Modified

Published: 2017-10-05T01:29:04.790

Modified: 2024-11-21T03:04:30.343

Link: CVE-2017-1000253

cve-icon Redhat

Severity : Important

Publid Date: 2017-09-26T00:00:00Z

Links: CVE-2017-1000253 - Bugzilla