What is CVE-2017-17862?

CVE-2017-17862 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Improper Input Validation flaw (CWE-20). CVE-2017-17862 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2017-17862?

CVE-2017-17862 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2017-17862?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2017-17862 patch availability.

Is CVE-2017-17862 actively exploited?

CVE-2017-17862 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2017-17862

Medium

kernel/bpf/verifier.c in the Linux kernel through 4.14.8 ignores unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service.

Package Linux Kernel

Published 2017-12-27

Last modified 2026-05-13

CVSS version 3.0

Patch available

Awaiting data

CVSS 3.0 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-20

CVE-2017-17862 is a Improper Input Validation vulnerability

What is Improper Input Validation?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. Learn more on MITRE CWE

References

10 total

Kernel Git
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c131187db2d3fa2f8bf32fdf4e9a4ef805168467

Vendor Advisory
Spinics
https://www.spinics.net/lists/stable/msg206984.html

Patch Third Party Advisory
Securityfocus
http://www.securityfocus.com/bid/102325

Third Party Advisory VDB Entry
Securitytracker
http://www.securitytracker.com/id/1040057

Third Party Advisory VDB Entry
Debian Security
https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-fix-branch-pruning-logic.patch?h=stretch-security

Third Party Advisory

Showing 5 of 10 references View all on NVD

Details

CVE ID CVE-2017-17862

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.0

Published 2017-12-27

Modified 2026-05-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2017-17862?

CVE-2017-17862 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2017-17862 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2017-17862?

CVE-2017-17862 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2017-17862?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2017-17862 patch availability.
Is CVE-2017-17862 actively exploited?

No. CVE-2017-17862 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.