CVE-2023-54286

wifi: iwlwifi: dvm: Fix memcpy: detected field-spanning write backtrace

HIGH

7.6

CVSS Score

Published: December 30, 2025 at 12:23 PM UTC

Updated: August 5, 2026 at 10:24 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.6

Exploit prediction

EPSS 0.3%

Description

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>

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.1 ≤ v < 4.14.3163.1 ≤ v < 4.19.2843.1 ≤ v < 5.10.1813.1 ≤ v < 5.15.1133.1 ≤ v < 5.4.2443.1 ≤ v < 6.1.303.1 ≤ v < 6.3.43.1 ≤ v < 6.43.15a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5

Vendor states this is fixed in 3ed3c1c2fc3482b72e755820261779cd2e2c5a3e (fixed)

Vendor states this is fixed in 57189c885149825be8eb8c3524b5af017fdeb941 (fixed)

Vendor states this is fixed in 6cd644f66b43709816561d63e0173cb0c7aab159 (fixed)

Vendor states this is fixed in 76b5ea43ad2fb4f726ddfaff839430a706e7d7c2 (fixed)

Vendor states this is fixed in 87940e4030e4705e1f3fd2bbb1854eae8308314b (fixed)

Vendor states this is fixed in 91ad1ab3cc7e981cb6d6ee100686baed64e1277e (fixed)

Vendor states this is fixed in ef16799640865f937719f0771c93be5dca18adc6 (fixed)

Vendor states this is fixed in fa57021262e998e2229d6383b1081638df2fe238 (fixed)

Vendor states this is fixed in 3.1 (unaffected)

Vendor states this is fixed in 4.14.316 (unaffected)

Vendor states this is fixed in 4.19.284 (unaffected)

Vendor states this is fixed in 5.10.181 (unaffected)