CVE-2023-42753
HIGH severity · CVSS 7 · Out-of-bounds write
7CVSS HIGH
Summary
An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.
Impact & exploitability
Attack vectorLocal
Attack complexityHigh
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (3)
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-2023:7370Advisory
- 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
- https://access.redhat.com/errata/RHSA-2023:7539Advisory
- https://access.redhat.com/errata/RHSA-2023:7558Advisory