https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 09:27:34 +0000 https://vulnerability.circl.lu/vuln/cve-2023-4208 <p><strong>Affected:</strong> Linux Kernel</p> <p>A use-after-free vulnerability in the Linux kernel&#39;s net/sched: cls_u32 component can be exploited to achieve local privilege escalation.</p> <p>When u32_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free.</p> <p>We recommend upgrading past commit 3044b16e7c6fe5d24b1cdbcf1bd0a9d92d1ebd81.</p> <p><strong>Affected:</strong> Linux Kernel</p> <p>A use-after-free vulnerability in the Linux kernel&#39;s net/sched: cls_u32 component can be exploited to achieve local privilege escalation.</p> <p>When u32_change() is called on an existing filter, the whole tcf_result struct is always copied into the new instance of the filter. This causes a problem when updating a filter bound to a class, as tcf_unbind_filter() is always called on the old instance in the success path, decreasing filter_cnt of the still referenced class and allowing it to be deleted, leading to a use-after-free.</p> <p>We recommend upgrading past commit 3044b16e7c6fe5d24b1cdbcf1bd0a9d92d1ebd81.</p> https://vulnerability.circl.lu/vuln/cve-2023-4208