In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: ath12k: fix stride mismatch in mac_phy_caps_parse()<\/p>\n
Currently, in ath12k_wmi_mac_phy_caps_parse(), kzalloc() sizes the
\nmac_phy_caps buffer as tot_phy_id * len, where len is clamped to
\nmin(firmware_len, sizeof(struct ath12k_wmi_mac_phy_caps_params)). The
\nsubsequent memcpy() destination advances by sizeof(full struct) per slot
\nvia C pointer arithmetic, not by the clamped len. When firmware sends
\nshort TLVs, the second and later slots are written past the end of the
\nallocation.<\/p>\n
The reader in ath12k_pull_mac_phy_cap_svc_ready_ext() also indexes the
\nbuffer with full-struct pointer arithmetic, so the allocation must match
\nthat stride.<\/p>\n
Fix by using kzalloc_objs(), which derives the element size from the
\npointer type, making allocation size and pointer stride provably
\nconsistent regardless of what len the firmware provides.<\/p>\n
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c7-00108-QCAHMTSWPL_V1.0_V2.0_SILICONZ_UPSTREAM-3<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: ath12k: fix stride mismatch in mac_phy_caps_parse()<\/p>\n
Currently, in ath12k_wmi_mac_phy_caps_parse(), kzalloc() sizes the
\nmac_p<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25808","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25808","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=25808"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25808"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25808"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}