CVE-2023-3812
HIGH severity · CVSS 7.8 · Out-of-bounds write
7.8CVSS HIGH
Summary
An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://access.redhat.com/errata/RHSA-2023:6799Advisory
- https://access.redhat.com/errata/RHSA-2023:6813Advisory
- https://access.redhat.com/errata/RHSA-2023:7370Advisory
- https://access.redhat.com/errata/RHSA-2023:7379Advisory
- https://access.redhat.com/errata/RHSA-2023:7382Advisory
- https://access.redhat.com/errata/RHSA-2023:7389Advisory
- https://access.redhat.com/errata/RHSA-2023:7411Advisory
- https://access.redhat.com/errata/RHSA-2023:7418Advisory