Kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags

7.8 CVSS

Vulnerability Description

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 Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Red Hat

View all reports →

Affected Software

Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat Virtualization 4 for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7

Vulnerable Versions:

0:4.18.0-513.9.1.rt7.311.el8_9, 0:4.18.0-513.9.1.el8_9, 0:4.18.0-147.94.1.el8_1, 0:4.18.0-193.133.1.el8_2, 0:4.18.0-193.133.1.rt13.184.el8_2, 0:4.18.0-305.120.1.el8_4, 0:4.18.0-305.120.1.rt7.196.el8_4, 0:4.18.0-372.87.1.el8_6, 0:4.18.0-477.43.1.el8_8, 0:5.14.0-362.18.1.el9_3, 0:5.14.0-70.80.1.el9_0, 0:5.14.0-70.80.1.rt21.151.el9_0, 0:5.14.0-284.40.1.el9_2, 0:5.14.0-284.40.1.rt14.325.el9_2