In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
RISC-V: KVM: Serialize IMSIC attributes with vCPU migration<\/p>\n
KVM device ioctls are not serialized against KVM_RUN. As a result,
\nkvm_riscv_aia_imsic_rw_attr() can snapshot the physical CPU and HGEI of
\nan IMSIC VS-file before a concurrent vCPU migration releases it.<\/p>\n
The HGEI can then be allocated to another vCPU before imsic_vsfile_rw()
\nuses the stale tuple. A GET or SET attribute may consequently access the
\nnew owner’s interrupt file.<\/p>\n
Serialize the entire IMSIC attribute operation with the target vCPU
\nmutex. This prevents the VS-file from being migrated and recycled until
\nthe attribute access completes. Acquire the mutex killably so that the
\ndevice ioctl remains interruptible while waiting for KVM_RUN to finish.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
RISC-V: KVM: Serialize IMSIC attributes with vCPU migration<\/p>\n
KVM device ioctls are not serialized against KVM_RUN. As a result,
\nkvm<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-40937","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/40937","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=40937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=40937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=40937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}