Is CVE-2015-8709 in the CISA KEV catalog?

No. CVE-2015-8709 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-8709?

CVE-2015-8709 has a CVSS v3 base score of 7.0 (HIGH).

What is the EPSS score for CVE-2015-8709?

CVE-2015-8709 has an EPSS score of 0.40% (32th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-8709?

Upgrade linux on debian 11 to 4.3.3-3 or later. Fixes are available for 34 affected products.

CVE & CISA-KEV Catalog

CVE-2015-8709

HIGH

7.0

CVSS v3

NVD

Description

kernel/ptrace.c in the Linux kernel through 4.4.1 mishandles uid and gid mappings, which allows local users to gain privileges by establishing a user namespace, waiting for a root process to enter that namespace with an unsafe uid or gid, and then using the ptrace system call. NOTE: the vendor states "there is no kernel bug here.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

linuxDebian

Fixed in:4.3.3-3CVE-2015-8709

linuxUbuntu

Fixed in:3.13.0-74.118USN-2848-1

linux-image-3.13.0-74-genericUbuntu

Fixed in:3.13.0-74.118USN-2848-1

linux-image-3.13.0-74-generic-lpaeUbuntu

Fixed in:3.13.0-74.118USN-2848-1

linux-image-3.13.0-74-lowlatencyUbuntu

Fixed in:3.13.0-74.118USN-2848-1

linux-image-3.13.0-74-powerpc-e500Ubuntu

Fixed in:3.13.0-74.118USN-2848-1

linux-image-3.13.0-74-powerpc-e500mcUbuntu

Fixed in:3.13.0-74.118USN-2848-1

linux-image-3.13.0-74-powerpc-smpUbuntu

Fixed in:3.13.0-74.118USN-2848-1

linux-image-3.13.0-74-powerpc64-embUbuntu

Fixed in:3.13.0-74.118USN-2848-1

linux-image-3.13.0-74-powerpc64-smpUbuntu

Fixed in:3.13.0-74.118USN-2848-1

linux-image-3.16.0-57-genericUbuntu

Fixed in:3.16.0-57.77~14.04.1USN-2849-1

linux-image-3.16.0-57-generic-lpaeUbuntu

Fixed in:3.16.0-57.77~14.04.1USN-2849-1

linux-image-3.16.0-57-lowlatencyUbuntu

Fixed in:3.16.0-57.77~14.04.1USN-2849-1

linux-image-3.16.0-57-powerpc-e500mcUbuntu

Fixed in:3.16.0-57.77~14.04.1USN-2849-1

linux-image-3.16.0-57-powerpc-smpUbuntu

Fixed in:3.16.0-57.77~14.04.1USN-2849-1

linux-image-3.16.0-57-powerpc64-embUbuntu

Fixed in:3.16.0-57.77~14.04.1USN-2849-1

linux-image-3.16.0-57-powerpc64-smpUbuntu

Fixed in:3.16.0-57.77~14.04.1USN-2849-1

linux-image-3.19.0-42-genericUbuntu

Fixed in:3.19.0-42.48~14.04.1USN-2854-1

linux-image-3.19.0-42-generic-lpaeUbuntu

Fixed in:3.19.0-42.48~14.04.1USN-2854-1

linux-image-3.19.0-42-lowlatencyUbuntu

Fixed in:3.19.0-42.48~14.04.1USN-2854-1

linux-image-3.19.0-42-powerpc-e500mcUbuntu

Fixed in:3.19.0-42.48~14.04.1USN-2854-1

linux-image-3.19.0-42-powerpc-smpUbuntu

Fixed in:3.19.0-42.48~14.04.1USN-2854-1

linux-image-3.19.0-42-powerpc64-embUbuntu

Fixed in:3.19.0-42.48~14.04.1USN-2854-1

linux-image-3.19.0-42-powerpc64-smpUbuntu

Fixed in:3.19.0-42.48~14.04.1USN-2854-1

linux-image-4.2.0-22-genericUbuntu

Fixed in:4.2.0-22.27~14.04.1USN-2853-1

linux-image-4.2.0-22-generic-lpaeUbuntu

Fixed in:4.2.0-22.27~14.04.1USN-2853-1

linux-image-4.2.0-22-lowlatencyUbuntu

Fixed in:4.2.0-22.27~14.04.1USN-2853-1

linux-image-4.2.0-22-powerpc-e500mcUbuntu

Fixed in:4.2.0-22.27~14.04.1USN-2853-1

linux-image-4.2.0-22-powerpc-smpUbuntu

Fixed in:4.2.0-22.27~14.04.1USN-2853-1

linux-image-4.2.0-22-powerpc64-embUbuntu

Fixed in:4.2.0-22.27~14.04.1USN-2853-1

linux-image-4.2.0-22-powerpc64-smpUbuntu

Fixed in:4.2.0-22.27~14.04.1USN-2853-1

linux-lts-utopicUbuntu

Fixed in:3.16.0-57.77~14.04.1USN-2849-1

linux-lts-vividUbuntu

Fixed in:3.19.0-42.48~14.04.1USN-2854-1

linux-lts-wilyUbuntu

Fixed in:4.2.0-22.27~14.04.1USN-2853-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.40%probability of exploitation in 30 days

32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.