CVE-2023-54286

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

State: Published
Severity: 7.6 High
Published: Dec 30, 2025
Updated: Aug 5, 2026
Reserved: Dec 30, 2025

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>

Scores

CVSS	Score	Vector	Source
3.1	7.6 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 76b5ea43ad2fb4f726ddfaff839430a706e7d7c2Affected 5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 3ed3c1c2fc3482b72e755820261779cd2e2c5a3eAffected 5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before fa57021262e998e2229d6383b1081638df2fe238Affected 5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 91ad1ab3cc7e981cb6d6ee100686baed64e1277eAffected 5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 87940e4030e4705e1f3fd2bbb1854eae8308314bAffected 5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 57189c885149825be8eb8c3524b5af017fdeb941Affected 5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 6cd644f66b43709816561d63e0173cb0c7aab159Affected 5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before ef16799640865f937719f0771c93be5dca18adc6Affected
LinuxLinux	3.1Affected before 3.1Not affected 4.14.316 through 4.14.Not affected 4.19.284 through 4.19.Not affected 5.4.244 through 5.4.Not affected 5.10.181 through 5.10.Not affected 5.15.113 through 5.15.Not affected 6.1.30 through 6.1.Not affected 6.3.4 through 6.3.*Not affected 6.4 and laterNot affected

Product

Versions

LinuxLinux

5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 76b5ea43ad2fb4f726ddfaff839430a706e7d7c2Affected
5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 3ed3c1c2fc3482b72e755820261779cd2e2c5a3eAffected
5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before fa57021262e998e2229d6383b1081638df2fe238Affected
5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 91ad1ab3cc7e981cb6d6ee100686baed64e1277eAffected
5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 87940e4030e4705e1f3fd2bbb1854eae8308314bAffected
5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 57189c885149825be8eb8c3524b5af017fdeb941Affected
5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before 6cd644f66b43709816561d63e0173cb0c7aab159Affected
5a3d9882b84edf5fa8e8ca33a5d6df25e2e727a5 to before ef16799640865f937719f0771c93be5dca18adc6Affected

LinuxLinux

3.1Affected
before 3.1Not affected
4.14.316 through 4.14.*Not affected
4.19.284 through 4.19.*Not affected
5.4.244 through 5.4.*Not affected
5.10.181 through 5.10.*Not affected
5.15.113 through 5.15.*Not affected
6.1.30 through 6.1.*Not affected
6.3.4 through 6.3.*Not affected
6.4 and laterNot affected

References

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