Use After Free in Linux Kernel
CVE-2020-36385
An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.
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: 0.015 (73.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- syzkaller.appspot.com/bug (Patch, Third Party Advisory)
- sites.google.com/view/syzscope/kasan-use-after-free-read-in-ucma_close-2 (Patch, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10 (Release Notes, Vendor Advisory)
- security.netapp.com/advisory/ntap-20210720-0004/ (Third Party Advisory)
- www.starwindsoftware.com/security/sw-20220802-0002/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-36385?
- CVE-2020-36385 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2021-06-07.
- How severe is CVE-2020-36385?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-36385 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.