https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Thu, 01 Oct 2026 03:51:25 +0000 https://vulnerability.circl.lu/vuln/cve-2023-4623 <p><strong>Affected:</strong> Linux Kernel</p> <p>A use-after-free vulnerability in the Linux kernel&#39;s net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation.</p> <p>If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free.</p> <p>We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.</p> <p><strong>Affected:</strong> Linux Kernel</p> <p>A use-after-free vulnerability in the Linux kernel&#39;s net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation.</p> <p>If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free.</p> <p>We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.</p> https://vulnerability.circl.lu/vuln/cve-2023-4623