Use After Free in Linux Kernel
CVE-2018-6555
The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel
- Linux Kernel — versions before 4.17
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
- ARPSyndicate/cvemon
- 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
- khnhdz/linux-kernel-exploitation
- knd06/linux-kernel-exploitation
References
- usn.ubuntu.com/3776-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3776-2/ (vendor-advisory, Third Party Advisory)
- www.spinics.net/lists/stable/msg255035.html (mailing-list, Patch, Third Party Advisory)
- usn.ubuntu.com/3777-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3775-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/10/msg00003.html (mailing-list, Third Party Advisory)
- www.debian.org/security/2018/dsa-4308 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3775-2/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/105304 (VDB Entry, Third Party Advisory, vdb-entry)
- usn.ubuntu.com/3777-2/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-6555?
- CVE-2018-6555 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2018-09-04.
- How severe is CVE-2018-6555?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2018-6555 known to be exploited?
- 16 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.