| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-49929: wifi: iwlwifi: mvm: avoid NULL pointer dereference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: iwlwifi: mvm: avoid NULL pointer dereference |
| |
| iwl_mvm_tx_skb_sta() and iwl_mvm_tx_mpdu() verify that the mvmvsta |
| pointer is not NULL. |
| It retrieves this pointer using iwl_mvm_sta_from_mac80211, which is |
| dereferencing the ieee80211_sta pointer. |
| If sta is NULL, iwl_mvm_sta_from_mac80211 will dereference a NULL |
| pointer. |
| Fix this by checking the sta pointer before retrieving the mvmsta |
| from it. If sta is not NULL, then mvmsta isn't either. |
| |
| The Linux kernel CVE team has assigned CVE-2024-49929 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.14 with commit 5b577a90fb3d86447ee86f8e0c6ddbd5da2ef8c9 and fixed in 6.1.120 with commit cbc6fc9cfcde151ff5eadaefdc6155f99579384f |
| Issue introduced in 3.14 with commit 5b577a90fb3d86447ee86f8e0c6ddbd5da2ef8c9 and fixed in 6.6.55 with commit 6dcadb2ed3b76623ab96e3e7fbeda1a374d01c28 |
| Issue introduced in 3.14 with commit 5b577a90fb3d86447ee86f8e0c6ddbd5da2ef8c9 and fixed in 6.10.14 with commit cdbf51bfa4b0411820806777da36d93d49bc49a1 |
| Issue introduced in 3.14 with commit 5b577a90fb3d86447ee86f8e0c6ddbd5da2ef8c9 and fixed in 6.11.3 with commit c0b4f5d94934c290479180868a32c15ba36a6d9e |
| Issue introduced in 3.14 with commit 5b577a90fb3d86447ee86f8e0c6ddbd5da2ef8c9 and fixed in 6.12 with commit 557a6cd847645e667f3b362560bd7e7c09aac284 |
| |
| 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-2024-49929 |
| 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/tx.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/cbc6fc9cfcde151ff5eadaefdc6155f99579384f |
| https://git.kernel.org/stable/c/6dcadb2ed3b76623ab96e3e7fbeda1a374d01c28 |
| https://git.kernel.org/stable/c/cdbf51bfa4b0411820806777da36d93d49bc49a1 |
| https://git.kernel.org/stable/c/c0b4f5d94934c290479180868a32c15ba36a6d9e |
| https://git.kernel.org/stable/c/557a6cd847645e667f3b362560bd7e7c09aac284 |
