https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sun, 04 Oct 2026 12:57:11 +0000 https://vulnerability.circl.lu/vuln/cve-2026-43458 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>serial: caif: hold tty-&gt;link reference in ldisc_open and ser_release</p> <p>A reproducer triggers a KASAN slab-use-after-free in pty_write_room() when caif_serial&#39;s TX path calls tty_write_room(). The faulting access is on tty-&gt;link-&gt;port.</p> <p>Hold an extra kref on tty-&gt;link for the lifetime of the caif_serial line discipline: get it in ldisc_open() and drop it in ser_release(), and also drop it on the ldisc_open() error path.</p> <p>With this change applied, the reproducer no longer triggers the UAF in my testing.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>serial: caif: hold tty-&gt;link reference in ldisc_open and ser_release</p> <p>A reproducer triggers a KASAN slab-use-after-free in pty_write_room() when caif_serial&#39;s TX path calls tty_write_room(). The faulting access is on tty-&gt;link-&gt;port.</p> <p>Hold an extra kref on tty-&gt;link for the lifetime of the caif_serial line discipline: get it in ldisc_open() and drop it in ser_release(), and also drop it on the ldisc_open() error path.</p> <p>With this change applied, the reproducer no longer triggers the UAF in my testing.</p> https://vulnerability.circl.lu/vuln/cve-2026-43458