CVE-2020-12652

EUVD-2020-4951

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	Primary	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

Base Score

CVSS 3.x

EPSS Score

Percentile: 20%

Affected Products (NVD)

Vendor	Product	Version
linux	linux_kernel	𝑥 < 5.4.14

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

linux

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

Ubuntu Releases

Ubuntu Product

Codename

linux

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

linux-aws

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

linux-aws-5.0

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

linux-aws-5.3

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

linux-aws-5.4

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

linux-aws-hwe

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

linux-azure

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

linux-azure-4.15

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

linux-azure-5.3

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

linux-azure-5.4

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

linux-azure-edge

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

linux-dell300x

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

linux-gcp

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

linux-gcp-4.15

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

linux-gcp-5.3

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

linux-gcp-5.4

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

linux-gcp-edge

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

linux-gke-4.15

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

linux-gke-5.0

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

linux-gke-5.3

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

linux-gke-5.4

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

linux-gkeop

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

linux-gkeop-5.4

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

linux-hwe

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

linux-hwe-5.4

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

linux-hwe-5.8

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

linux-hwe-edge

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

linux-kvm

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

linux-lts-trusty

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

linux-lts-xenial

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

linux-oem

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

linux-oem-5.10

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

linux-oem-5.6

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

linux-oem-osp1

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

linux-oracle

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

linux-oracle-5.0

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

linux-oracle-5.3

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

linux-oracle-5.4

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

linux-raspi

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

linux-raspi-5.4

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

linux-raspi2

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

linux-raspi2-5.3

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

linux-riscv

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

linux-snapdragon

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

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