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 "sta_cmd.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 iwlagn_send_sta_key+0x375/0x390 [iwldvm] <snip> Hardware name: Dell Inc. Latitude E6430/0H3MT5, BIOS A21 05/08/2017 RIP: 0010:iwlagn_send_sta_key+0x375/0x390 [iwldvm] <snip> Call Trace: <TASK> iwl_set_dynamic_key+0x1f0/0x220 [iwldvm] iwlagn_mac_set_key+0x1e4/0x280 [iwldvm] drv_set_key+0xa4/0x1b0 [mac80211] ieee80211_key_enable_hw_accel+0xa8/0x2d0 [mac80211] ieee80211_key_replace+0x22d/0x8e0 [mac80211] <snip>
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Ubuntu | — | Upgrade linux-hwe-5.4Upgrade linux-intel-iotgUpgrade linux-azure-5.4Upgrade linux-xilinx-zynqmpUpgrade linux-fipsUpgrade linux-gkeopUpgrade linux-azure-fde-5.15Upgrade linux-azure-fdeUpgrade linux-nvidiaUpgrade linux-oracleUpgrade linux-realtimeUpgrade linux-azure-5.15Upgrade linux-hwe-5.15Upgrade linux-gcp-fipsUpgrade linux-kvmUpgrade linux-aws-5.4Upgrade linux-bluefieldUpgrade linux-iotUpgrade linux-raspiUpgrade linux-intel-iotg-5.15Upgrade linux-raspi-5.4Upgrade linux-ibmUpgrade linux-riscv-5.15Upgrade linux-oracle-5.15Upgrade linux-azureUpgrade linux-lowlatency-hwe-5.15Upgrade linux-gcp-5.15Upgrade linux-aws-fipsUpgrade linux-nvidia-tegraUpgrade linux-ibm-5.15Upgrade linux-ibm-5.4Upgrade linux-nvidia-tegra-5.15Upgrade linux-lowlatencyUpgrade linux-oracle-5.4Upgrade linuxUpgrade linux-gcpUpgrade linux-gkeUpgrade linux-aws-5.15Upgrade linux-awsUpgrade linux-gcp-5.4Upgrade linux-azure-fipsUpgrade linux-intel-iot-realtimeUpgrade linux-nvidia-tegra-igx | Jan 6, 2026 | Jan 2, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 30, 2025 |
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