CVE-2023-3776

CVE Details

Release Date:2023-07-06

Description


A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

See more information about CVE-2023-3776 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 7 Base Metrics: AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Access Vector: Local network Attack Complexity: High
Privileges Required: Low User Interaction: None
Scope: Unchanged Confidentiality Impact: High
Integrity Impact: High Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 6 (kernel-uek)ELSA-2023-128422023-10-03
Oracle Linux version 7 (kernel)ELSA-2023-74232023-11-22
Oracle Linux version 7 (kernel-uek)ELSA-2023-128422023-10-03
Oracle Linux version 8 (kernel)ELSA-2023-52442023-09-21
Oracle Linux version 9 (kernel)ELSA-2023-50692023-09-15
Oracle VM version 3 (kernel-uek)OVMSA-2023-00232023-11-02



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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