CVE-2020-12652

05.05.2020, 05:15

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."

Race Condition

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	4.1 MEDIUM	LOCAL	HIGH	HIGH	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
mitre	CNA	---				---
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 12%

Vendor	Product	Version
linux	linux_kernel	𝑥 < 5.4.14

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

linux

bullseye	5.10.223-1 fixed
bullseye (security)	5.10.226-1 fixed
bookworm	6.1.106-3 fixed
bookworm (security)	6.1.112-1 fixed
trixie	6.11.5-1 fixed
sid	6.11.6-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

linux

groovy	not-affected
focal	not-affected
eoan	Fixed 5.3.0-42.34 released
bionic	Fixed 4.15.0-91.92 released
xenial	Fixed 4.4.0-174.204 released
trusty	ignored

linux-aws

groovy	not-affected
focal	not-affected
eoan	Fixed 5.3.0-1013.14 released
bionic	Fixed 4.15.0-1063.67 released
xenial	Fixed 4.4.0-1102.113 released
trusty	Fixed 4.4.0-1062.66 released

linux-aws-5.0

groovy	dne
focal	dne
eoan	dne
bionic	ignored
xenial	dne
trusty	dne

linux-aws-5.3

groovy	dne
focal	dne
eoan	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-aws-5.4

groovy	dne
focal	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-aws-hwe

groovy	dne
focal	dne
eoan	dne
bionic	dne
xenial	Fixed 4.15.0-1063.67~16.04.1 released
trusty	dne

linux-azure

groovy	not-affected
focal	not-affected
eoan	Fixed 5.3.0-1016.17 released
bionic	ignored
xenial	Fixed 4.15.0-1075.80 released
trusty	Fixed 4.15.0-1074.79~14.04.1 released

linux-azure-4.15

groovy	dne
focal	dne
eoan	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-azure-5.3

groovy	dne
focal	dne
eoan	dne
bionic	Fixed 5.3.0-1016.17~18.04.1 released
xenial	dne
trusty	dne

linux-azure-5.4

groovy	dne
focal	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-azure-edge

groovy	dne
focal	dne
eoan	dne
bionic	ignored
xenial	dne
trusty	dne

linux-dell300x

groovy	dne
focal	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-gcp

groovy	not-affected
focal	not-affected
eoan	Fixed 5.3.0-1014.15 released
bionic	ignored
xenial	Fixed 4.15.0-1058.62 released
trusty	dne

linux-gcp-4.15

groovy	dne
focal	dne
eoan	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-gcp-5.3

groovy	dne
focal	dne
eoan	dne
bionic	Fixed 5.3.0-1014.15~18.04.1 released
xenial	dne
trusty	dne

linux-gcp-5.4

groovy	dne
focal	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-gcp-edge

groovy	dne
focal	dne
eoan	dne
bionic	ignored
xenial	dne
trusty	dne

linux-gke-4.15

groovy	dne
focal	dne
eoan	dne
bionic	Fixed 4.15.0-1055.58 released
xenial	dne
trusty	dne

linux-gke-5.0

groovy	dne
focal	dne
eoan	dne
bionic	Fixed 5.0.0-1032.33 released
xenial	dne
trusty	dne

linux-gke-5.3

groovy	dne
focal	dne
eoan	dne
bionic	Fixed 5.3.0-1014.15~18.04.1 released
xenial	dne
trusty	dne

linux-gke-5.4

groovy	dne
focal	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-gkeop

groovy	dne
focal	not-affected
bionic	dne
xenial	dne
trusty	dne

linux-gkeop-5.4

groovy	dne
focal	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-hwe

groovy	dne
focal	dne
eoan	dne
bionic	Fixed 5.3.0-42.34~18.04.1 released
xenial	Fixed 4.15.0-91.92~16.04.1 released
trusty	dne

linux-hwe-5.4

groovy	dne
focal	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-hwe-5.8

groovy	dne
focal	not-affected
bionic	dne
xenial	dne
trusty	dne

linux-hwe-edge

groovy	dne
focal	dne
eoan	dne
bionic	ignored
xenial	ignored
trusty	dne

linux-kvm

groovy	not-affected
focal	not-affected
eoan	Fixed 5.3.0-1012.13 released
bionic	Fixed 4.15.0-1056.57 released
xenial	Fixed 4.4.0-1066.73 released
trusty	dne

linux-lts-trusty

groovy	dne
focal	dne
eoan	dne
bionic	dne
xenial	dne
trusty	dne

linux-lts-xenial

groovy	dne
focal	dne
eoan	dne
bionic	dne
xenial	dne
trusty	Fixed 4.4.0-174.204~14.04.1 released

linux-oem

groovy	dne
focal	dne
eoan	ignored
bionic	Fixed 4.15.0-1076.86 released
xenial	ignored
trusty	dne

linux-oem-5.10

groovy	dne
focal	not-affected
bionic	dne
xenial	dne
trusty	dne

linux-oem-5.6

groovy	dne
focal	not-affected
eoan	dne
bionic	dne
xenial	dne
trusty	dne

linux-oem-osp1

groovy	dne
focal	dne
eoan	ignored
bionic	Fixed 5.0.0-1043.48 released
xenial	dne
trusty	dne

linux-oracle

groovy	not-affected
focal	not-affected
eoan	Fixed 5.3.0-1011.12 released
bionic	Fixed 4.15.0-1035.39 released
xenial	Fixed 4.15.0-1035.38~16.04.1 released
trusty	dne

linux-oracle-5.0

groovy	dne
focal	dne
eoan	dne
bionic	ignored
xenial	dne
trusty	dne

linux-oracle-5.3

groovy	dne
focal	dne
eoan	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-oracle-5.4

groovy	dne
focal	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-raspi

groovy	not-affected
focal	not-affected
eoan	dne
bionic	dne
xenial	dne
trusty	dne

linux-raspi-5.4

groovy	dne
focal	dne
bionic	not-affected
xenial	dne
trusty	dne

linux-raspi2

groovy	dne
focal	ignored
eoan	Fixed 5.3.0-1019.21 released
bionic	Fixed 4.15.0-1057.61 released
xenial	Fixed 4.4.0-1129.138 released
trusty	dne

linux-raspi2-5.3

groovy	dne
focal	dne
eoan	dne
bionic	Fixed 5.3.0-1019.21~18.04.1 released
xenial	dne
trusty	dne

linux-riscv

groovy	not-affected
focal	not-affected
eoan	dne
bionic	dne
xenial	dne
trusty	dne

linux-snapdragon

groovy	dne
focal	dne
eoan	dne
bionic	Fixed 4.15.0-1074.81 released
xenial	Fixed 4.4.0-1133.141 released
trusty	dne

Common Weakness Enumeration

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.

References

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.14

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=28d76df18f0ad5bcf5fa48510b225f0ed262a99b

https://github.com/torvalds/linux/commit/28d76df18f0ad5bcf5fa48510b225f0ed262a99b

https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html

https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html

https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html

https://security.netapp.com/advisory/ntap-20200608-0001/

https://www.debian.org/security/2020/dsa-4698