| 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-2022-49022: wifi: mac8021: fix possible oob access in ieee80211_get_rate_duration |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| wifi: mac8021: fix possible oob access in ieee80211_get_rate_duration |
| |
| Fix possible out-of-bound access in ieee80211_get_rate_duration routine |
| as reported by the following UBSAN report: |
| |
| UBSAN: array-index-out-of-bounds in net/mac80211/airtime.c:455:47 |
| index 15 is out of range for type 'u16 [12]' |
| CPU: 2 PID: 217 Comm: kworker/u32:10 Not tainted 6.1.0-060100rc3-generic |
| Hardware name: Acer Aspire TC-281/Aspire TC-281, BIOS R01-A2 07/18/2017 |
| Workqueue: mt76 mt76u_tx_status_data [mt76_usb] |
| Call Trace: |
| <TASK> |
| show_stack+0x4e/0x61 |
| dump_stack_lvl+0x4a/0x6f |
| dump_stack+0x10/0x18 |
| ubsan_epilogue+0x9/0x43 |
| __ubsan_handle_out_of_bounds.cold+0x42/0x47 |
| ieee80211_get_rate_duration.constprop.0+0x22f/0x2a0 [mac80211] |
| ? ieee80211_tx_status_ext+0x32e/0x640 [mac80211] |
| ieee80211_calc_rx_airtime+0xda/0x120 [mac80211] |
| ieee80211_calc_tx_airtime+0xb4/0x100 [mac80211] |
| mt76x02_send_tx_status+0x266/0x480 [mt76x02_lib] |
| mt76x02_tx_status_data+0x52/0x80 [mt76x02_lib] |
| mt76u_tx_status_data+0x67/0xd0 [mt76_usb] |
| process_one_work+0x225/0x400 |
| worker_thread+0x50/0x3e0 |
| ? process_one_work+0x400/0x400 |
| kthread+0xe9/0x110 |
| ? kthread_complete_and_exit+0x20/0x20 |
| ret_from_fork+0x22/0x30 |
| |
| The Linux kernel CVE team has assigned CVE-2022-49022 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.5 with commit db3e1c40cf2f973fbdd52ae0b59a9472b1c04f4a and fixed in 5.10.158 with commit 0184ede0ec61b9cd075babfaa45081b1bf322234 |
| Issue introduced in 5.5 with commit db3e1c40cf2f973fbdd52ae0b59a9472b1c04f4a and fixed in 5.15.82 with commit 59b54f0563b6546c94bdb6823d3b382c75407019 |
| Issue introduced in 5.5 with commit db3e1c40cf2f973fbdd52ae0b59a9472b1c04f4a and fixed in 6.0.12 with commit f0fcad4c7201ecfaa17357f4ce0c50b4708df22d |
| Issue introduced in 5.5 with commit db3e1c40cf2f973fbdd52ae0b59a9472b1c04f4a and fixed in 6.1 with commit 3e8f7abcc3473bc9603323803aeaed4ffcc3a2ab |
| |
| 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-2022-49022 |
| 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: |
| net/mac80211/airtime.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/0184ede0ec61b9cd075babfaa45081b1bf322234 |
| https://git.kernel.org/stable/c/59b54f0563b6546c94bdb6823d3b382c75407019 |
| https://git.kernel.org/stable/c/f0fcad4c7201ecfaa17357f4ce0c50b4708df22d |
| https://git.kernel.org/stable/c/3e8f7abcc3473bc9603323803aeaed4ffcc3a2ab |
