In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
bpf: don’t rewrite bpf_fastcall patterns entered by a jump<\/p>\n
mark_fastcall_pattern_for_call() must ensure that matched
\n“spill; call; fill” instruction series is not interrupted by a jump.
\nOtherwise the rewrite applied by bpf_remove_fastcall_spills_fills()
\nis not sound.<\/p>\n
Record the instructions targeted by jumps in
\ninsn_aux_data[*].jump_target when the CFG is built and use this flag
\nto stop growing a pattern at such an instruction. Jumps to the first
\nspill are fine.<\/p>\n
Note that existing insn_aux_data[*].jmp_point field can’t be reused,
\nas it marks subprogram return instructions.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
bpf: don’t rewrite bpf_fastcall patterns entered by a jump<\/p>\n
mark_fastcall_pattern_for_call() must ensure that matched
\n“spill; call;<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29203","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29203","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=29203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}