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High 7.8Known exploited (CISA KEV)Published Oct 4, 2017

CVE-2017-1000253Linux distributions that have not patched their long-term kernels with https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015).

Updated under an hour ago ()

Does this affect you?

It affects centos and 2 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Sep 9, 2024; federal agencies had to remediate by Sep 30, 2024, and it is known to be used in ransomware. Treat that date as your deadline.

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.

CVSS
7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-119
Known exploited
Added to CISA KEV Sep 9, 2024; federal remediation due Sep 30, 2024; known ransomware useApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days)
10.70% (percentile 96)
Assigned by
mitre
NVD analysis
Analyzed
Record last updated
Oct 21, 2025
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
centos centos
centos:centos
6.0
CISA ADP
redhat enterprise_linux
redhat:enterprise_linux
6.0; 6.1; 6.2; 6.3; 6.4; 6.5; 6.6; 6.7; and 6 more ranges
CISA ADP
linux linux_kernel
linux:linux_kernel
from 2.6.25 before 3.2.70; from 3.3 before 3.4.109; from 3.5 before 3.10.77; from 3.11 before 3.12.43; from 3.13 before 3.14.41; from 3.15 before 3.16.35; from 3.17 before 3.18.14; from 3.19 before 3.19.7; and 1 more ranges
CISA ADP
centos centos
centos:centos
6.0; 6.1; 6.2; 6.3; 6.4; 6.5; 6.6; 6.7; and 6 more ranges
NVD
redhat enterprise_linux
redhat:enterprise_linux
6.0; 6.1; 6.2; 6.3; 6.4; 6.5; 6.6; 6.7; and 6 more ranges
NVD
linux linux_kernel
linux:linux_kernel
from 2.6.25 before 3.2.70; from 3.3 before 3.4.109; from 3.5 before 3.10.77; from 3.11 before 3.12.43; from 3.13 before 3.14.41; from 3.15 before 3.16.35; from 3.17 before 3.18.14; from 3.19 before 3.19.7; and 1 more ranges
NVD

References

  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vdb-entry, x-refsource-sectrack, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vdb-entry, x-refsource-bid, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • x-refsource-misc, patch, third-party-advisory
  • vendor-advisory, x-refsource-redhat, third-party-advisory
  • us-government-resource

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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