In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
coresight: etm4x: fix underflow for usage of (nrseqstate – 1)<\/p>\n
According to IHI006H Embedded Trace Macrocell Architecture
\nSpecification[0], TRCSEQEVR is implemented only when
\nTRCIDR5.NUMSEQSTATE is 0b100, in which case n ranges from 0 to 2;
\notherwise, TRCIDR5.NUMSEQSTATE is 0b000.<\/p>\n
IOW, the number of usage in the initialisation or setting
\nTRCSEQEVR with drvdata->nrseqstate – 1 in the loop could make
\nunderflow issue when TRCIDR5.NUMSEQSTATE is 0b000.<\/p>\n
Therefore, introduce nr_seq_ctrls field and untie it from nrseqstate.
\nAs part of this introduce ETM_MAX_SEQ_TRANSITIONS macro and
\napply nr_seq_ctrls and above macro to TRCSEQEVR relevant fields setup.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
coresight: etm4x: fix underflow for usage of (nrseqstate – 1)<\/p>\n
According to IHI006H Embedded Trace Macrocell Architecture
\nSpecifica<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25683","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25683","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=25683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}