What is CVE-2017-17805?

CVE-2017-17805 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Improper Input Validation flaw (CWE-20). CVE-2017-17805 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2017-17805?

CVE-2017-17805 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-2017-17805?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2017-17805 patch availability.

Is CVE-2017-17805 actively exploited?

CVE-2017-17805 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2017-17805

High

The Salsa20 encryption algorithm in the Linux kernel before 4.14.8 does not correctly handle zero-length inputs, allowing a local attacker able to use the AF_ALG-based skcipher interface (CONFIG_CRYPTO_USER_API_SKCIPHER) to cause a denial of service (uninitialized-memory free and kernel crash) or have unspecified other impact by executing a crafted sequence of system calls that use the blkcipher_walk API. Both the generic implementation (crypto/salsa20_generic.c) and x86 implementation (arch/x86/crypto/salsa20_glue.c) of Salsa20 were vulnerable.

Package Linux Kernel

Published 2017-12-20

Last modified 2026-05-13

CVSS version 3.1

Patch available

Awaiting data

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-20

CVE-2017-17805 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

24 total

Kernel Git
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ecaaab5649781c5a0effdaf298a925063020500e

Patch
GitHub
https://github.com/torvalds/linux/commit/ecaaab5649781c5a0effdaf298a925063020500e

Patch
Lists
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html

Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html

Third Party Advisory
Lists
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html

Third Party Advisory

Showing 5 of 24 references View all on NVD

Details

CVE ID CVE-2017-17805

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2017-12-20

Modified 2026-05-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2017-17805?

CVE-2017-17805 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2017-17805 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2017-17805?

CVE-2017-17805 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-2017-17805?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2017-17805 patch availability.
Is CVE-2017-17805 actively exploited?

No. CVE-2017-17805 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.