Vulnerability in Linux Kernel
CVE-2020-12652
The __mptctl_ioctl function in drivers/message/fusion/mptctl.c in the Linux kernel before 5.4.14 allows local users to hold an incorrect lock during the ioctl operation and trigger a race condition, i.e., a "double fetch" vulnerability, aka CID-28d76df18f0a. NOTE: the vendor states "The security impact of this bug is not as bad as it could have been because these operations are all privileged and root already has enormous destructive power."
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.14 (Release Notes, Vendor Advisory)
- github.com/torvalds/linux/commit/28d76df18f0ad5bcf5fa48510b225f0ed262a99b (Patch, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- security.netapp.com/advisory/ntap-20200608-0001/
- lists.debian.org/debian-lts-announce/2020/06/msg00011.html (mailing-list)
- lists.debian.org/debian-lts-announce/2020/06/msg00012.html (mailing-list)
- lists.debian.org/debian-lts-announce/2020/06/msg00013.html (mailing-list)
- www.debian.org/security/2020/dsa-4698 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html (vendor-advisory)
Frequently asked questions
- What is CVE-2020-12652?
- CVE-2020-12652 is a medium-severity vulnerability in Linux Kernel, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.1/10. Published 2020-05-05.
- How severe is CVE-2020-12652?
- Medium severity. CVSS v3 base score is 4.1 out of 10.
- Is CVE-2020-12652 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.