Use After Free in Linux Kernel
CVE-2015-8961
The __ext4_journal_stop function in fs/ext4/ext4_jbd2.c in the Linux kernel before 4.3.3 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging improper access to a certain error field.
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:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3 (Release Notes)
- github.com/torvalds/linux/commit/6934da9238da947628be83635e365df41064b09b (Patch, Vendor Advisory)
- source.android.com/security/bulletin/2016-11-01.html (Third Party Advisory)
- www.securityfocus.com/bid/94135 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2015-8961?
- CVE-2015-8961 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2016-11-16.
- How severe is CVE-2015-8961?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2015-8961 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.