What is CVE-2017-9242?

CVE-2017-9242 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-2017-9242 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2017-9242?

CVE-2017-9242 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-2017-9242?

No patch is currently available for CVE-2017-9242. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2017-9242 actively exploited?

CVE-2017-9242 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2017-9242

Medium

The __ip6_append_data function in net/ipv6/ip6_output.c in the Linux kernel through 4.11.3 is too late in checking whether an overwrite of an skb data structure may occur, which allows local users to cause a denial of service (system crash) via crafted system calls.

Package Linux Kernel

Published 2017-05-27

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-2017-9242 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

The following references provide additional information about CVE-2017-9242 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
http://www.debian.org/security/2017/dsa-3886
Securityfocus
http://www.securityfocus.com/bid/98731

Third Party Advisory VDB Entry
Red Hat
https://access.redhat.com/errata/RHSA-2017:1842
Red Hat
https://access.redhat.com/errata/RHSA-2017:2077
Patchwork
https://patchwork.ozlabs.org/patch/764880/

Broken Link
Kernel patch commit
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=232cd35d0804cc241eb887bb8d4d9b3b9881c64a
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/232cd35d0804cc241eb887bb8d4d9b3b9881c64a
Patch

Details

CVE ID CVE-2017-9242

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.0

Published 2017-05-27

Modified 2026-05-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2017-9242?

CVE-2017-9242 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-2017-9242 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2017-9242?

CVE-2017-9242 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-2017-9242?

No patch is currently available for CVE-2017-9242. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2017-9242 actively exploited?

No — CVE-2017-9242 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Improper Input Validation (CWE-20)?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. View CWE-20 on MITRE CWE →