In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
erofs: preserve LZMA decoders on resize failure<\/p>\n
The pool-resize path frees each stream’s old decoder before allocating
\nits replacement. If an allocation fails after some streams have already
\nbeen replaced, the failed stream is put back on the list with state ==
\nNULL. z_erofs_lzma_max_dictsize is still advanced as if the whole
\npool had been resized.<\/p>\n
An existing LZMA mount can select the broken stream and pass
\nNULL to xz_dec_microlzma_reset(). A retry at the same size also
\nskip another resize attempt. Since the global maximum was advanced,
\nthus, the invalid state is left unrepaired.<\/p>\n
Allocate each replacement before freeing the old decoder, temporarily
\nretaining one old decoder during allocation. Stop at the first failure
\nand advance z_erofs_lzma_max_dictsize only after all streams satisfy
\nthe request.<\/p>\n
Record each stream’s dictionary capacity so retries can skip streams
\nalready enlarged before a partial failure.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
erofs: preserve LZMA decoders on resize failure<\/p>\n
The pool-resize path frees each stream’s old decoder before allocating
\nits replace<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29037","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29037","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=29037"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29037"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}