In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
qede: fix off-by-one in BD ring consumption on build_skb failure<\/p>\n
qede_rx_build_skb() and qede_tpa_rx_build_skb() do not check for a
\nNULL return from qede_build_skb(). When it returns NULL under memory
\npressure, the functions still consume a BD from the ring before
\nreturning NULL. The callers then recycle additional BDs, resulting in
\none extra BD being consumed (off-by-one). This desynchronizes the BD
\nring, which can corrupt DMA page reference counts and lead to SLUB
\nfreelist corruption.<\/p>\n
Commit 4e910dbe3650 (“qede: confirm skb is allocated before using”)
\nadded a NULL check inside qede_build_skb() to prevent a NULL pointer
\ndereference, but did not address the missing NULL checks in the
\ncallers, making this off-by-one reachable.<\/p>\n
Fix this by adding NULL checks for the return value of
\nqede_build_skb() in both qede_rx_build_skb() and
\nqede_tpa_rx_build_skb(), returning NULL immediately before any BD ring
\nmanipulation.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
qede: fix off-by-one in BD ring consumption on build_skb failure<\/p>\n
qede_rx_build_skb() and qede_tpa_rx_build_skb() do not check for <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6966","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6966","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=6966"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6966"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}