CVE-2021-3923 — Sensitive Information Exposure in Kernel
Severity
2.3LOWNVD
EPSS
0.0%
top 96.73%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 27
Latest updateFeb 14
Description
A flaw was found in the Linux kernel's implementation of RDMA over infiniband. An attacker with a privileged local account can leak kernel stack information when issuing commands to the /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information, it can be further used to defeat existing kernel protection mechanisms.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:NExploitability: 0.8 | Impact: 1.4
Affected Packages4 packages
Also affects: Enterprise Linux 6.0, 7.0, 8.0, Fedora 37
Patches
🔴Vulnerability Details
3CVEList▶
CVE-2021-3923: A flaw was found in the Linux kernel's implementation of RDMA over infiniband↗2023-03-27
OSV▶
CVE-2021-3923: A flaw was found in the Linux kernel's implementation of RDMA over infiniband↗2023-03-27
GHSA▶
GHSA-c8f9-2rww-56v5: A flaw was found in the Linux kernel's implementation of RDMA over infiniband↗2023-03-27
📋Vendor Advisories
4Microsoft▶
A flaw was found in the Linux kernel's implementation of RDMA over infiniband. An attacker with a privileged local account can leak kernel stack information when issuing commands to the /dev/infiniban↗2023-03-14
Debian▶
CVE-2021-3923: linux - A flaw was found in the Linux kernel's implementation of RDMA over infiniband. A...↗2021