Use After Free in Linux Kernel
CVE-2018-17182
An issue was discovered in the Linux kernel through 4.18.8. The vmacache_flush_all function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.032 (88.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
- Linux Kernel
- NetApp Active Iq Performance Analytics Services
- NetApp Element Software
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- usn.ubuntu.com/3776-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3776-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3777-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/10/msg00003.html (mailing-list, Third Party Advisory)
- security.netapp.com/advisory/ntap-20190204-0001/ (Patch, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:3656 (vendor-advisory, Third Party Advisory)
- github.com/torvalds/linux/commit/7a9cdebdcc17e426fb5287e4a82db1dfe86339b2 (Patch, Vendor Advisory)
- www.debian.org/security/2018/dsa-4308 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/105417 (VDB Entry, Third Party Advisory, vdb-entry)
- www.exploit-db.com/exploits/45497/ (Exploit, VDB Entry, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2018-17182?
- CVE-2018-17182 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2018-09-19.
- How severe is CVE-2018-17182?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2018-17182 known to be exploited?
- 57 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.