In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: dvm: Fix memcpy: detected field-spanning write backtrace
A received TKIP key may be up to 32 bytes because it may contain MIC rx/tx keys too. These are not used by iwl and copying these over overflows the iwl_keyinfo.key field.
Add a check to not copy more data to iwl_keyinfo.key then will fit.
This fixes backtraces like this one:
memcpy: detected field-spanning write (size 32) of single field "stacmd.key.key" at drivers/net/wireless/intel/iwlwifi/dvm/sta.c:1103 (size 16) WARNING: CPU: 1 PID: 946 at drivers/net/wireless/intel/iwlwifi/dvm/sta.c:1103 iwlagnsendstakey+0x375/0x390 [iwldvm] <snip> Hardware name: Dell Inc. Latitude E6430/0H3MT5, BIOS A21 05/08/2017 RIP: 0010:iwlagnsendstakey+0x375/0x390 [iwldvm] <snip> Call Trace: <TASK> iwlsetdynamickey+0x1f0/0x220 [iwldvm] iwlagnmacsetkey+0x1e4/0x280 [iwldvm] drvsetkey+0xa4/0x1b0 [mac80211] ieee80211keyenablehwaccel+0xa8/0x2d0 [mac80211] ieee80211key_replace+0x22d/0x8e0 [mac80211] <snip>
{
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54286.json"
}