In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
i3c: master: adi: initialize the lock before enabling interrupts<\/p>\n
adi_i3c_master_probe() requests the IRQ and unmasks REG_IRQ_PENDING_CMDR
\nbefore the controller’s IBI state, transfer queue list and transfer
\nqueue lock are initialized. A pending CMDR interrupt can therefore run
\nadi_i3c_master_irq() and take master->xferqueue.lock before the dynamic
\nlock has been initialized.<\/p>\n
This issue was found by our static analysis tool and then manually
\nreviewed against the current tree.<\/p>\n
The grounded PoC kept the probe ordering and the IRQ path
\nadi_i3c_master_probe() -> adi_i3c_master_irq() -> xferqueue.lock, with a
\npending CMDR interrupt arriving after REG_IRQ_PENDING_CMDR is unmasked.
\nLockdep reported:<\/p>\n
INFO: trying to register non-static key.
\n you didn’t initialize this object before use?
\n lock_acquire+0xbb\/0x290
\n _raw_spin_lock_irqsave+0x36\/0x60
\n adi_i3c_master_irq+0x32\/0x56 [vuln_msv]
\n adi_i3c_master_probe+0x5a\/0xf47 [vuln_msv]<\/p>\n
Initialize the transfer queue and IBI state before requesting and
\nunmasking the IRQ.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
i3c: master: adi: initialize the lock before enabling interrupts<\/p>\n
adi_i3c_master_probe() requests the IRQ and unmasks REG_IRQ_PENDI<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21286","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21286","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=21286"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21286"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}