CVE-2026-52937

medium Red Hat
CVSS v3 Base Score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.2%
Exploitation probability in 30 days
Top 95% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: June 24, 2026 (15 days ago)
Last Modified: June 24, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's tap driver. This vulnerability allows an attacker to potentially disclose sensitive kernel stack memory contents to userspace. The flaw occurs in the `tap_ioctl()` function when handling the `SIOCGIFHWADDR` command, where uninitialized portions of a stack-allocated structure are copied to userspace. This information leak could be used to bypass Kernel Address Space Layout Randomization (KASLR), making it easier for attackers to exploit other vulnerabilities.

CWE

CWE-909

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org