In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net: mvpp2: prevent buffer overflow in page_pool allocation<\/p>\n
The per\u2011processor buffering scheme is supported only if the
\nnumber of pools (nrxqs\u202f*\u202f2) does not exceed MVPP2_BM_MAX_POOLS (8).
\nThis is already checked in mvpp2_probe() during the initial
\nactivation of percpu_pools.<\/p>\n
However, mvpp2_change_mtu() may later call
\nmvpp2_bm_switch_buffers(priv, true) without this check, which can
\nlead to an out-of-bounds access in the priv->page_pool array in
\nmvpp2_bm_init(). The array is sized to hold MVPP2_PORT_MAX_RXQ
\nentries, and mvpp2_get_nrxqs() may return exactly that value. The
\nper-CPU scheme then doubles it to nrxqs * 2, exceeding the array
\nbounds.<\/p>\n
Check that the hardware version is MVPP22 or newer and that the
\nnumber of pools (nrxqs * 2) does not exceed MVPP2_BM_MAX_POOLS
\nbefore switching to per-CPU mode.<\/p>\n
Found by Linux Verification Center (linuxtesting.org) with SVACE.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net: mvpp2: prevent buffer overflow in page_pool allocation<\/p>\n
The per\u2011processor buffering scheme is supported only if the
\nnumber of <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-33341","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/33341","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=33341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=33341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=33341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}