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CVE-2017-1000253

7.8 Élevée Exploitée activement Utilisée par des rançongiciels

Publiée le 05/10/2017 à 03:29 · Modifiée le 17/06/2026 à 02:58 · Analysée par le NVD · Source : cve@mitre.org

Catalogue CISA KEV — Linux Kernel PIE Stack Buffer Corruption Vulnerability

Ajoutée le 09/09/2024 · Échéance de correction (agences US) : 30/09/2024

Action requise : Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Description

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.

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Produits concernés

Scores CVSS

VersionScoreSourceVecteur
3.1 7.8 Élevée nvd@nist.gov (NVD) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1 7.8 Élevée 134c704f-9b21-4f2e-91b3-4a467353bcc0 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.0 7.2 Élevée nvd@nist.gov (NVD) AV:L/AC:L/Au:N/C:C/I:C/A:C

Faiblesses (CWE)

Références

Ailleurs