What is CVE-2017-1000253?

CVE-2017-1000253 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Buffer Overflow flaw (CWE-119), affecting Linux kernel versions from 6.0 onward and patched in 3.2.70, 3.4.109, 3.10.77 and others. CVE-2017-1000253 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild.

What is the CVSS score for CVE-2017-1000253?

CVE-2017-1000253 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2017-1000253?

Yes, CVE-2017-1000253 has been patched. Fixed versions include 3.2.70, 3.4.109, 3.10.77 and others. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2017-1000253 actively exploited?

Yes. CVE-2017-1000253 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild with a CVSS score of 7.8 (High severity).

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2017-1000253

High KEV — Actively Exploited

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.

Package Linux Kernel

Published 2017-10-05

Last modified 2026-04-21

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-119

CVE-2017-1000253 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.0, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1, 7.2, 7.3, 2.6.25, 3.3, 3.5, 3.11, 3.13, 3.15, 3.17, 3.19, 1.0 and later are affected. 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 and their respective stable series.

Affected from

≥ 6.0 ≥ 6.1 ≥ 6.2 ≥ 6.3 ≥ 6.4 ≥ 6.5 ≥ 6.6 ≥ 6.7 ≥ 6.8 ≥ 6.9 ≥ 7.0 ≥ 7.1 ≥ 7.2 ≥ 7.3 ≥ 2.6.25 ≥ 3.3 ≥ 3.5 ≥ 3.11 ≥ 3.13 ≥ 3.15 ≥ 3.17 ≥ 3.19 ≥ 1.0

Fixed in

✓ 3.2.70 3.2.x ✓ 3.4.109 3.4.x ✓ 3.10.77 3.10.x ✓ 3.12.43 3.12.x ✓ 3.14.41 3.14.x ✓ 3.16.35 3.16.x ✓ 3.18.14 3.18.x ✓ 3.19.7 3.19.x ✓ 4.0.2 4.0.x

References

14 total

CISA
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-1000253

US Government Resource
Qualys
https://www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt

Patch Third Party Advisory
Securityfocus
http://www.securityfocus.com/bid/101010

Third Party Advisory VDB Entry
Securitytracker
http://www.securitytracker.com/id/1039434

Third Party Advisory VDB Entry
Red Hat
https://access.redhat.com/errata/RHSA-2017:2793

Third Party Advisory

Showing 5 of 14 references View all on NVD

Details

CVE ID CVE-2017-1000253

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2017-10-05

Modified 2026-04-21

KEV Yes

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2017-1000253?

CVE-2017-1000253 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . It affects Linux kernel versions from 6.0 onward and has been patched in 3.2.70, 3.4.109, 3.10.77 and others. CVE-2017-1000253 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild.
What is the CVSS score for CVE-2017-1000253?

CVE-2017-1000253 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2017-1000253?

Yes. CVE-2017-1000253 has been patched. Fixed versions include 3.2.70, 3.4.109, 3.10.77 and others. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2017-1000253 actively exploited?

Yes. CVE-2017-1000253 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. It carries a CVSS score of 7.8 (High severity).