Use After Free in Linux Kernel
CVE-2018-5344
In the Linux kernel through 4.14.13, drivers/block/loop.c mishandles lo_release serialization, which allows attackers to cause a denial of service (__lock_acquire use-after-free) or possibly have unspecified other impact.
Vulnerability class: Race Condition
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: 0.004 (28.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.1% 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
- Linux Kernel
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Workstation — versions 7.0
- Red Hat Virtualization — versions 4.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2018:3083 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3617-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3619-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3617-3/ (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/102503 (VDB Entry, Third Party Advisory, vdb-entry)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Third Party Advisory)
- usn.ubuntu.com/3583-2/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3632-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2948 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3583-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-5344?
- CVE-2018-5344 is a high-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.8/10. Published 2018-01-12.
- How severe is CVE-2018-5344?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2018-5344 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.