CVE-2017-1000253: Linux Kernel PIE Stack Buffer Corruption Vulnerability

Q: How do I fix CVE-2017-1000253?

centos: mitigate or apply the listed mitigation; enterprise linux: mitigate or apply the listed mitigation; linux kernel: upgrade to 3.2.70, 3.4.109, 3.10.77, 3.12.43, 3.14.41, 3.16.35, 3.18.14, 3.19.7, 4.0.2. Exact commands for each OS are on this page.

Q: Is CVE-2017-1000253 being exploited?

Yes. CVE-2017-1000253 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

Q: What does CVE-2017-1000253 affect?

CVE-2017-1000253 affects centos, enterprise linux, linux kernel. Severity is high (CVSS 7.8). 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 a87938b2

Q: How urgent is CVE-2017-1000253?

Priority 91/100. High severity; EPSS top 4%: very likely to be exploited; Exploited in the wild (CISA KEV); Used in ransomware campaigns; Public exploit reference; On your watchlist

Patch now

HIGH 7.8EXPLOITEDWATCHLISTMITIGATEMITIGATEUPGRADE

CVE-2017-1000253 is a high-severity flaw (CVSS 7.8) affecting centos, enterprise linux, linux kernel, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 alloc

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Exploited in the wild (CISA KEV)
Used in ransomware campaigns
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	10.7% (top 4%)
CISA exploited list	Yes, fix due 2024-09-30, used in ransomware
Weakness	CWE-119
Published	2017-10-05
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: centos · linux · redhat

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-10-05 01:29 UTCPublished CVE record published
2024-09-09Exploited Added to the CISA Known Exploited Vulnerabilities list
2024-09-30Deadline CISA due date for US federal agencies to patch
2026-06-17 00:58 UTCUpdated Record last modified

centos centos MITIGATE

Affected: 6.0 · 6.1 · 6.2 · 6.3 · 6.4 · 6.5 · 6.6 · 6.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux MITIGATE

Affected: 6.0 · 6.1 · 6.2 · 6.3 · 6.4 · 6.5 · 6.6 · 6.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

linux linux kernel UPGRADE

Affected: >= 2.6.25 and < 3.2.70 · >= 3.3 and < 3.4.109 · >= 3.5 and < 3.10.77 · >= 3.11 and < 3.12.43 · >= 3.13 and < 3.14.41 · >= 3.15 and < 3.16.35 · >= 3.17 and < 3.18.14 · >= 3.19 and < 3.19.7

Fixed in: 3.2.70, 3.4.109, 3.10.77, 3.12.43, 3.14.41, 3.16.35, 3.18.14, 3.19.7, 4.0.2

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · shotcut · FIXED · 26.10.30-1.fc46 · FEDORA-2026-7787c7fc2d · source

sudo dnf upgrade --advisory=FEDORA-2026-7787c7fc2d

Debian 12 · linux · FIXED · 4.0.2-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "4.0.2-1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · linux · FIXED · 4.0.2-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "4.0.2-1" && echo PATCHED || echo STILL-VULNERABLE

RHEL 5.9 Long Life · kernel · FIXED · kernel-2.6.18-348.34.2.el5

sudo dnf upgrade --advisory=RHSA-2017:2802 rpm -q kernel

RHEL 5 Extended Lifecycle Support · kernel · FIXED · kernel-2.6.18-423.el5

sudo dnf upgrade --advisory=RHSA-2017:2801 rpm -q kernel

RHEL 6 · kernel · FIXED · kernel-2.6.32-696.10.3.el6

sudo dnf upgrade --advisory=RHSA-2017:2795 rpm -q kernel

RHEL 6.2 Advanced Update Support · kernel · FIXED · kernel-2.6.32-220.76.1.el6

sudo dnf upgrade --advisory=RHSA-2017:2800 rpm -q kernel

RHEL 6.4 Advanced Update Support · kernel · FIXED · kernel-2.6.32-358.84.1.el6

sudo dnf upgrade --advisory=RHSA-2017:2799 rpm -q kernel

Amazon Linux 1 · see advisory · FIXED · ALAS-2015-603 · source

sudo yum update --advisory=ALAS-2015-603

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: RicterZ/PIE-Stack-Clash-CVE-2017-1000253 (6 stars)
GitHub PoC: sxlmnwb/CVE-2017-1000253 (2 stars)
Write-up: www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt
Exploit-DB: Linux Kernel 3.10.0-514.21.2.el7.x86_64 / 3.10.0-514.26.1.el7.x86_64 (CentOS 7) - SUID Position Independent Executable '

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-1000253?

centos: mitigate or apply the listed mitigation; enterprise linux: mitigate or apply the listed mitigation; linux kernel: upgrade to 3.2.70, 3.4.109, 3.10.77, 3.12.43, 3.14.41, 3.16.35, 3.18.14, 3.19.7, 4.0.2. Exact commands for each OS are on this page.

Is CVE-2017-1000253 being exploited?

Yes. CVE-2017-1000253 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2017-1000253 affect?

CVE-2017-1000253 affects centos, enterprise linux, linux kernel. Severity is high (CVSS 7.8). 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 a87938b2

How urgent is CVE-2017-1000253?

Priority 91/100. High severity; EPSS top 4%: very likely to be exploited; Exploited in the wild (CISA KEV); Used in ransomware campaigns; Public exploit reference; On your watchlist

Software pages

Linux kernel vulnerabilities · Git vulnerabilities

Related CVEs

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References

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