In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
f2fs: use the mount idmap for the owner check in f2fs_xattr_advise_set()<\/p>\n
f2fs_xattr_advise_set() calls inode_owner_or_capable() with &nop_mnt_idmap
\nbefore allowing the “system.advise” xattr to be set, instead of the idmap
\nthat the VFS passes to the ->set() handler.<\/p>\n
f2fs supports idmapped mounts, so on such a mount this checks the caller’s
\nfsuid against the unmapped on-disk owner rather than the mapped owner: the
\nactual owner can be wrongly denied with -EPERM and an unrelated caller
\nwrongly allowed. Pass the handler’s idmap instead.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
f2fs: use the mount idmap for the owner check in f2fs_xattr_advise_set()<\/p>\n
f2fs_xattr_advise_set() calls inode_owner_or_capable() wi<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-24526","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/24526","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=24526"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=24526"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=24526"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}