In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
nfc: fdp: bound the device-reported read length and fix an skb leak<\/p>\n
fdp_nci_i2c_read() takes the next packet length from two device-supplied
\nbytes and never validates it. The value is a u16 used as the
\ni2c_master_recv() count into a 261-byte on-stack buffer: a malicious,
\ncounterfeit or malfunctioning controller (or an i2c bus interposer) can
\ndrive it far past the buffer for a stack out-of-bounds write that
\nclobbers the canary and return address, or below the minimum frame size
\n(directly, or by truncating the computed sum) so the header\/LRC strip
\nand the next length read run past a short receive. Reject a length
\noutside [FDP_NCI_I2C_MIN_PAYLOAD, FDP_NCI_I2C_MAX_PAYLOAD], as a
\ncorrupted packet already is, and force resynchronization.<\/p>\n
The same loop allocates one data skb per iteration and assumes a length
\npacket followed by a data packet; a device that sends two data packets
\nin one call leaks the first skb when the second allocation overwrites
\nit. Free a previously allocated skb before allocating the next.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
nfc: fdp: bound the device-reported read length and fix an skb leak<\/p>\n
fdp_nci_i2c_read() takes the next packet length from two devic<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-17306","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/17306","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=17306"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17306"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17306"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}