CVE-2020-12652
Last modified
CVE-2020-12652 is a medium-severity vulnerability rated 4.1/10 on the CVSS scale. 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.". EPSS estimates a 0.33% chance of exploitation in the next 30 days.
Description
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."
Metrics
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.4.14 |
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.14Release Notes, Vendor Advisory
- https://github.com/torvalds/linux/commit/28d76df18f0ad5bcf5fa48510b225f0ed262a99bPatch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.14Release Notes, Vendor Advisory
- https://github.com/torvalds/linux/commit/28d76df18f0ad5bcf5fa48510b225f0ed262a99bPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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