Vulnerability in Linux Kernel
CVE-2015-8709
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00031.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00027.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00028.html (vendor-advisory)
- lkml.org/lkml/2015/12/25/71 (mailing-list)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00029.html (vendor-advisory)
- marc.info/ (mailing-list)
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html (vendor-advisory)
- www.openwall.com/lists/oss-security/2015/12/31/5 (mailing-list)
Frequently asked questions
- What is CVE-2015-8709?
- CVE-2015-8709 is a high-severity vulnerability in Linux Kernel, classified under CWE-264. CVSS score: 7.0/10. Published 2016-02-08.
- How severe is CVE-2015-8709?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2015-8709 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.