In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
smb: client: fix ALIGN() overflow in symlink_data() error context loop<\/p>\n
The check added by commit 7d9a7f1f96cd (“smb\/client: fix possible
\ninfinite loop and oob read in symlink_data()”) compared the post-ALIGN
\nlength against the remaining buffer, but ALIGN() itself can overflow:
\nfor ErrorDataLength near UINT32_MAX (e.g. 0xFFFFFFF9), ALIGN(x, 8)
\nwraps to 0, so the subsequent bounds check passes, and the loop
\nadvances by zero bytes leaving ‘p’ pointing into stale data.<\/p>\n
Fix by checking the raw ErrorDataLength against the remaining space
\nbefore applying ALIGN(), then checking again after. Since raw_len is
\nbounded by the buffer, raw_len + 7 cannot overflow, so the second check
\nis an exact post-alignment bounds guard.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
smb: client: fix ALIGN() overflow in symlink_data() error context loop<\/p>\n
The check added by commit 7d9a7f1f96cd (“smb\/client: fix po<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21556","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21556","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=21556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21556"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}