https://db.gcve.eu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 10 Nov 2026 01:17:30 +0000 https://db.gcve.eu/vuln/cve-2026-99172 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>ipc: drop the mqueue mount with kern_unmount() on setup failure</p> <p>mq_init_ns() creates the mqueue mount with fc_mount_longterm(), so its -&gt;mnt_ns is MNT_NS_INTERNAL. When setting up the mqueue or ipc sysctls or msg_init_ns() fails afterwards, create_ipc_ns() drops it with a plain mntput(). With -&gt;mnt_ns set that takes the fast path of mntput_no_expire(). The count drops to zero and nothing ever kills the mount, so the mount and the mqueue superblock are leaked.</p> <p>Commit dc55e35f9e81 (&#34;ipc: Store mqueue sysctls in the ipc namespace&#34;) added the first failure path after mq_init_ns() and never dropped the mount. Commit 7229d74e5e8c (&#34;ipc: create_ipc_ns: drop mqueue mount on sysctl setup failure&#34;) tried to fix that with a mntput() but that doesn&#39;t help for a long-term mount.</p> <p>Use kern_unmount(). free_ipc() open-codes the same thing for a namespace that made it.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>ipc: drop the mqueue mount with kern_unmount() on setup failure</p> <p>mq_init_ns() creates the mqueue mount with fc_mount_longterm(), so its -&gt;mnt_ns is MNT_NS_INTERNAL. When setting up the mqueue or ipc sysctls or msg_init_ns() fails afterwards, create_ipc_ns() drops it with a plain mntput(). With -&gt;mnt_ns set that takes the fast path of mntput_no_expire(). The count drops to zero and nothing ever kills the mount, so the mount and the mqueue superblock are leaked.</p> <p>Commit dc55e35f9e81 (&#34;ipc: Store mqueue sysctls in the ipc namespace&#34;) added the first failure path after mq_init_ns() and never dropped the mount. Commit 7229d74e5e8c (&#34;ipc: create_ipc_ns: drop mqueue mount on sysctl setup failure&#34;) tried to fix that with a mntput() but that doesn&#39;t help for a long-term mount.</p> <p>Use kern_unmount(). free_ipc() open-codes the same thing for a namespace that made it.</p> https://db.gcve.eu/vuln/cve-2026-99172