| From bippy-7c5fe7eed585 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-21930: wifi: iwlwifi: mvm: don't try to talk to a dead firmware |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: iwlwifi: mvm: don't try to talk to a dead firmware |
| |
| This fixes: |
| |
| bad state = 0 |
| WARNING: CPU: 10 PID: 702 at drivers/net/wireless/inel/iwlwifi/iwl-trans.c:178 iwl_trans_send_cmd+0xba/0xe0 [iwlwifi] |
| Call Trace: |
| <TASK> |
| ? __warn+0xca/0x1c0 |
| ? iwl_trans_send_cmd+0xba/0xe0 [iwlwifi 64fa9ad799a0e0d2ba53d4af93a53ad9a531f8d4] |
| iwl_fw_dbg_clear_monitor_buf+0xd7/0x110 [iwlwifi 64fa9ad799a0e0d2ba53d4af93a53ad9a531f8d4] |
| _iwl_dbgfs_fw_dbg_clear_write+0xe2/0x120 [iwlmvm 0e8adb18cea92d2c341766bcc10b18699290068a] |
| |
| Ask whether the firmware is alive before sending a command. |
| |
| The Linux kernel CVE team has assigned CVE-2025-21930 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.8 with commit 268712dc3b344f3a835211e5846e6ebfd7a13cbd and fixed in 6.12.19 with commit 437e93ecd40754f9e938d524daf52a10c589e2d4 |
| Issue introduced in 6.8 with commit 268712dc3b344f3a835211e5846e6ebfd7a13cbd and fixed in 6.13.7 with commit e7c31a3f4f27d61b9ccd894a7bf4690f137da0ec |
| Issue introduced in 6.8 with commit 268712dc3b344f3a835211e5846e6ebfd7a13cbd and fixed in 6.14 with commit d73d2c6e3313f0ba60711ab4f4b9044eddca9ca5 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2025-21930 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/437e93ecd40754f9e938d524daf52a10c589e2d4 |
| https://git.kernel.org/stable/c/e7c31a3f4f27d61b9ccd894a7bf4690f137da0ec |
| https://git.kernel.org/stable/c/d73d2c6e3313f0ba60711ab4f4b9044eddca9ca5 |
