CVE-2021-31916 — Out-of-bounds Write in Kernel
Severity
6.7MEDIUMNVD
OSV7.8OSV6.5OSV5.3
EPSS
0.0%
top 93.13%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMay 6
Latest updateFeb 14
Description
An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.8 | Impact: 5.9
Affected Packages8 packages
Also affects: Debian Linux 9.0, Enterprise Linux 7.0, 8.0
Patches
🔴Vulnerability Details
7GHSA▶
GHSA-2x6w-89x6-c628: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl↗2022-05-24
OSV▶
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities↗2021-06-08
OSV▶
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.↗2021-06-08
📋Vendor Advisories
7Microsoft▶
An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker ↗2021-05-11