Use After Free in Linux Kernel
CVE-2017-10661
Race condition in fs/timerfd.c in the Linux kernel before 4.10.15 allows local users to gain privileges or cause a denial of service (list corruption or use-after-free) via simultaneous file-descriptor operations that leverage improper might_cancel queueing.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.134 (96.3th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.134 · newest: 0.134 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux — versions 7.0
- Red Hat Enterprise Linux Aus — versions 7.4
- Red Hat Enterprise Linux Server Eus — versions 7.5
- Red Hat Enterprise Linux Server For Power Little Endian Update Services SAP Solutions — versions 7.4
Weakness classification (CWE)
Public proof-of-concept exploits
- GeneBlue/CVE-2017-10661_POC
- ARPSyndicate/cvemon
- GeneBlue/CVE-2017-10661_
- kdn111/linux-kernel-exploitation
- khanhdn111/linux-kernel-exploitation
- khanhdz-06/linux-kernel-exploitation
- khanhdz191/linux-kernel-exploitation
- khanhhdz/linux-kernel-exploitation
- khanhhdz06/linux-kernel-exploitation
- khanhnd123/linux-kernel-exploitation
References
- access.redhat.com/errata/RHSA-2018:3083 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/100215 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.15 (Release Notes, Vendor Advisory)
- www.debian.org/security/2017/dsa-3981 (vendor-advisory, Mailing List, Third Party Advisory)
- source.android.com/security/bulletin/2017-08-01 (Patch, Vendor Advisory)
- github.com/torvalds/linux/commit/1e38da300e1e395a15048b0af1e5305bd91402f6 (Patch, Third Party Advisory, Issue Tracking)
- www.exploit-db.com/exploits/43345/ (VDB Entry, Third Party Advisory, exploit)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Third Party Advisory, Issue Tracking)
- access.redhat.com/errata/RHSA-2018:3096 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-10661?
- CVE-2017-10661 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.0/10. Published 2017-08-19.
- How severe is CVE-2017-10661?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2017-10661 known to be exploited?
- 22 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.