5.5

CVE-2016-8646: linux linux_kernel NULL Pointer Dereference

Modified
AliasesUBUNTU-CVE-2016-8646DEBIAN-CVE-2016-8646
Published 28-11-2016Last modified 06-08-2024

Vulnerability summary

CVE-2016-8646 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.0 (NVD)
EPSS score
0.43%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 4
RHSA-2017:1297RHSA-2017:1298RHSA-2017:1308SUSE-SU-2017:0333-1SUSE-SU-2017:0437-1SUSE-SU-2017:0494-1

Timeline

  1. 28-11-2016
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The hash_accept function in crypto/algif_hash.c in the Linux kernel before 4.3.6 allows local users to cause a denial of service (OOPS) by attempting to trigger use of in-kernel hash algorithms for a socket that has received zero bytes of data.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.43% on 05-10-2026

05-10-202604-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu19 products
  • linux< 3.13.0-77.121
  • linux-azureAll versions (No fix recorded)
  • linux-azure-6.11All versions (No fix recorded)
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-azure-fde-5.15All versions (No fix recorded)
Debian1 product
  • linux< 4.4.2-1
Linux1 product

3 vendors · 21 products

References

14 links
Show all 14 references