In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: ath5k: do not access array OOB<\/p>\n
Vincent reports:
\n> The ath5k driver seems to do an array-index-out-of-bounds access as
\n> shown by the UBSAN kernel message:
\n> UBSAN: array-index-out-of-bounds in drivers\/net\/wireless\/ath\/ath5k\/base.c:1741:20
\n> index 4 is out of range for type ‘ieee80211_tx_rate [4]’
\n> …
\n> Call Trace:
\n>
\n> dump_stack_lvl+0x5d\/0x80
\n> ubsan_epilogue+0x5\/0x2b
\n> __ubsan_handle_out_of_bounds.cold+0x46\/0x4b
\n> ath5k_tasklet_tx+0x4e0\/0x560 [ath5k]
\n> tasklet_action_common+0xb5\/0x1c0<\/p>\n
It is real. ‘ts->ts_final_idx’ can be 3 on 5212, so:
\n info->status.rates[ts->ts_final_idx + 1].idx = -1;
\nwith the array defined as:
\n struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES];
\nwhile the size is:
\n #define IEEE80211_TX_MAX_RATES 4
\nis indeed bogus.<\/p>\n
Set this ‘idx = -1’ sentinel only if the array index is less than the
\narray size. As mac80211 will not look at rates beyond the size
\n(IEEE80211_TX_MAX_RATES).<\/p>\n
Note: The effect of the OOB write is negligible. It just overwrites the
\nnext member of info->status, i.e. ack_signal.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: ath5k: do not access array OOB<\/p>\n
Vincent reports:
\n> The ath5k driver seems to do an array-index-out-of-bounds access as
\n> show<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-16001","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/16001","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=16001"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16001"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16001"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}