| From bippy-5f407fcff5a0 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-2022-48787: iwlwifi: fix use-after-free |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| iwlwifi: fix use-after-free |
| |
| If no firmware was present at all (or, presumably, all of the |
| firmware files failed to parse), we end up unbinding by calling |
| device_release_driver(), which calls remove(), which then in |
| iwlwifi calls iwl_drv_stop(), freeing the 'drv' struct. However |
| the new code I added will still erroneously access it after it |
| was freed. |
| |
| Set 'failure=false' in this case to avoid the access, all data |
| was already freed anyway. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48787 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.14.263 with commit 8e10749fa1a454c1e7214f36cec83241f5a36ef1 and fixed in 4.14.268 with commit d3b98fe36f8a06ce654049540773256ab59cb53d |
| Issue introduced in 4.19.226 with commit 1d7cc54137a4f28506dc7beac235b240b08f4e59 and fixed in 4.19.231 with commit 7d6475179b85a83186ccce59cdc359d4f07d0bcb |
| Issue introduced in 5.4.174 with commit 0446cafa843e6db4982731c167e11c80d42be7e2 and fixed in 5.4.181 with commit 494de920d98f125b099f27a2d274850750aff957 |
| Issue introduced in 5.10.94 with commit febab6b60d61d13cd9f30a2991deea56df39567d and fixed in 5.10.102 with commit 008508c16af0087cda0394e1ac6f0493b01b6063 |
| Issue introduced in 5.15.17 with commit e23f075d77987de4215c8e0696f28bcc707506f7 and fixed in 5.15.25 with commit ddd46059f7d99119b62d44c519df7a79f2e6a515 |
| Issue introduced in 5.16.3 with commit 6b5ad4bd0d78fef6bbe0ecdf96e09237c9c52cc1 and fixed in 5.16.11 with commit 9958b9cbb22145295ee1ffaea0904c383da2c05d |
| |
| 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-2022-48787 |
| 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/iwl-drv.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/d3b98fe36f8a06ce654049540773256ab59cb53d |
| https://git.kernel.org/stable/c/7d6475179b85a83186ccce59cdc359d4f07d0bcb |
| https://git.kernel.org/stable/c/494de920d98f125b099f27a2d274850750aff957 |
| https://git.kernel.org/stable/c/008508c16af0087cda0394e1ac6f0493b01b6063 |
| https://git.kernel.org/stable/c/ddd46059f7d99119b62d44c519df7a79f2e6a515 |
| https://git.kernel.org/stable/c/9958b9cbb22145295ee1ffaea0904c383da2c05d |
| https://git.kernel.org/stable/c/bea2662e7818e15d7607d17d57912ac984275d94 |
