Use After Free in Linux Kernel
CVE-2017-7374
Use-after-free vulnerability in fs/crypto/ in the Linux kernel before 4.10.7 allows local users to cause a denial of service (NULL pointer dereference) or possibly gain privileges by revoking keyring keys being used for ext4, f2fs, or ubifs encryption, causing cryptographic transform objects to be freed prematurely.
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: 0.008 (54.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- source.android.com/security/bulletin/2017-10-01 (Third Party Advisory)
- www.securityfocus.com/bid/97308 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/torvalds/linux/commit/1b53cf9815bb4744958d41f3795d5d5a1d365e2d (Patch, Third Party Advisory)
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.7 (Release Notes, Vendor Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-7374?
- CVE-2017-7374 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2017-03-31.
- How severe is CVE-2017-7374?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-7374 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.