CVE-2023-54286
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 versions
Linux kernel versions
3.1
and later are affected. Fixed in
4.14.316,
4.19.284,
5.4.244,
5.10.181,
5.15.113,
6.1.30,
6.3.4,
6.4
and their respective stable series.
References
The following references provide additional information about CVE-2023-54286 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/3ed3c1c2fc3482b72e755820261779cd2e2c5a3e
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PatchKernel patch commithttps://git.kernel.org/stable/c/57189c885149825be8eb8c3524b5af017fdeb941
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PatchKernel patch commithttps://git.kernel.org/stable/c/6cd644f66b43709816561d63e0173cb0c7aab159
Frequently asked questions
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What is CVE-2023-54286?
CVE-2023-54286 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.1 onward and has been patched in 4.14.316, 4.19.284, 5.4.244 and others. CVE-2023-54286 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2023-54286?
Yes — CVE-2023-54286 has been patched. Fixed versions include 4.14.316, 4.19.284, 5.4.244 and others. If you are running Linux kernel 3.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-54286 actively exploited?
No — CVE-2023-54286 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.