5.5

CVE-2015-8844: linux linux_kernel Improper Input Validation

Modified
AliasesUBUNTU-CVE-2015-8844DEBIAN-CVE-2015-8844
Published 27-04-2016Last modified 06-08-2024

Vulnerability summary

CVE-2015-8844 is a medium (CVSS 5.5) Improper Input Validation vulnerability in linux linux_kernel. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 32.7% 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
0.39%
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 2
RHSA-2016:2574RHSA-2016:2584

Timeline

  1. 27-04-2016
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The signal implementation in the Linux kernel before 4.3.5 on powerpc platforms does not check for an MSR with both the S and T bits set, which allows local users to cause a denial of service (TM Bad Thing exception and panic) via a crafted application.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

33%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.39% on 04-10-2026

04-10-202603-11-2026

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, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu4 products
  • linux< 3.13.0-77.121
  • linux-lts-utopic< 3.16.0-60.80~14.04.1
  • linux-lts-vivid< 3.19.0-49.55~14.04.1
  • linux-lts-wily< 4.2.0-27.32~14.04.1
Debian1 product
  • linux< 4.4.2-1
Linux1 product

3 vendors · 6 products

References

12 links
Show all 12 references