In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
xfrm: iptfs: reset runtime state when cloning SAs<\/p>\n
iptfs_clone_state() clones the IPTFS mode data with kmemdup(). This
\ncopies runtime objects which must not be shared with the original SA,
\nincluding the embedded sk_buff_head, hrtimers, spinlock, and in-flight
\nreassembly\/reorder state.<\/p>\n
If xfrm_state_migrate() fails after clone_state() but before the later
\ninit_state() call has reinitialized those fields, the cloned state can be
\ndestroyed by xfrm_state_gc_task() with list and timer state copied from the
\noriginal SA. With queued packets this lets the clone splice and free skbs
\nowned by the original IPTFS queue, leading to use-after-free and
\ndouble-free reports in iptfs_destroy_state() and skb release paths.<\/p>\n
Reinitialize the clone’s runtime state before publishing it through
\nx->mode_data. Because clone_state() now publishes a destroyable mode_data
\nobject before init_state(), take the mode callback module reference there.
\nAvoid taking it again from __iptfs_init_state() for the same object.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
xfrm: iptfs: reset runtime state when cloning SAs<\/p>\n
iptfs_clone_state() clones the IPTFS mode data with kmemdup(). This
\ncopies runti<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-14949","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/14949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}