| 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-2022-49298: staging: rtl8712: fix uninit-value in r871xu_drv_init() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| staging: rtl8712: fix uninit-value in r871xu_drv_init() |
| |
| When 'tmpU1b' returns from r8712_read8(padapter, EE_9346CR) is 0, |
| 'mac[6]' will not be initialized. |
| |
| BUG: KMSAN: uninit-value in r871xu_drv_init+0x2d54/0x3070 drivers/staging/rtl8712/usb_intf.c:541 |
| r871xu_drv_init+0x2d54/0x3070 drivers/staging/rtl8712/usb_intf.c:541 |
| usb_probe_interface+0xf19/0x1600 drivers/usb/core/driver.c:396 |
| really_probe+0x653/0x14b0 drivers/base/dd.c:596 |
| __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:752 |
| driver_probe_device drivers/base/dd.c:782 [inline] |
| __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:899 |
| bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427 |
| __device_attach+0x593/0x8e0 drivers/base/dd.c:970 |
| device_initial_probe+0x4a/0x60 drivers/base/dd.c:1017 |
| bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487 |
| device_add+0x1fff/0x26e0 drivers/base/core.c:3405 |
| usb_set_configuration+0x37e9/0x3ed0 drivers/usb/core/message.c:2170 |
| usb_generic_driver_probe+0x13c/0x300 drivers/usb/core/generic.c:238 |
| usb_probe_device+0x309/0x570 drivers/usb/core/driver.c:293 |
| really_probe+0x653/0x14b0 drivers/base/dd.c:596 |
| __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:752 |
| driver_probe_device drivers/base/dd.c:782 [inline] |
| __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:899 |
| bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427 |
| __device_attach+0x593/0x8e0 drivers/base/dd.c:970 |
| device_initial_probe+0x4a/0x60 drivers/base/dd.c:1017 |
| bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487 |
| device_add+0x1fff/0x26e0 drivers/base/core.c:3405 |
| usb_new_device+0x1b8e/0x2950 drivers/usb/core/hub.c:2566 |
| hub_port_connect drivers/usb/core/hub.c:5358 [inline] |
| hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] |
| port_event drivers/usb/core/hub.c:5660 [inline] |
| hub_event+0x58e3/0x89e0 drivers/usb/core/hub.c:5742 |
| process_one_work+0xdb6/0x1820 kernel/workqueue.c:2307 |
| worker_thread+0x10b3/0x21e0 kernel/workqueue.c:2454 |
| kthread+0x3c7/0x500 kernel/kthread.c:377 |
| ret_from_fork+0x1f/0x30 |
| |
| Local variable mac created at: |
| r871xu_drv_init+0x1771/0x3070 drivers/staging/rtl8712/usb_intf.c:394 |
| usb_probe_interface+0xf19/0x1600 drivers/usb/core/driver.c:396 |
| |
| KMSAN: uninit-value in r871xu_drv_init |
| https://syzkaller.appspot.com/bug?id=3cd92b1d85428b128503bfa7a250294c9ae00bd8 |
| |
| The Linux kernel CVE team has assigned CVE-2022-49298 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.9.318 with commit 0b7371a22489cbb2e8e826ca03fb5ce92afb04fe |
| Fixed in 4.14.283 with commit 277faa442fe0c59f418ac53f47a78e1266addd65 |
| Fixed in 4.19.247 with commit a6535d00a9d54ce1c2a8d86a85001ffb6844f9b2 |
| Fixed in 5.4.198 with commit 52a0d88c328098b4e9fb8f2f3877fec0eff4104b |
| Fixed in 5.10.122 with commit ff727ab0b7d7a56b5ef281f12abd00c4b85894e9 |
| Fixed in 5.15.47 with commit f36e754a1f0bafb9feeea63463de78080acb6de0 |
| Fixed in 5.17.15 with commit 76a964ad0ea8f2b10abd69a7532e174a28258283 |
| Fixed in 5.18.4 with commit 70df04433fd351ba72bc635bd0b5fe443d9ac964 |
| Fixed in 5.19 with commit 0458e5428e5e959d201a40ffe71d762a79ecedc4 |
| |
| 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-2022-49298 |
| 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/staging/rtl8712/usb_intf.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/0b7371a22489cbb2e8e826ca03fb5ce92afb04fe |
| https://git.kernel.org/stable/c/277faa442fe0c59f418ac53f47a78e1266addd65 |
| https://git.kernel.org/stable/c/a6535d00a9d54ce1c2a8d86a85001ffb6844f9b2 |
| https://git.kernel.org/stable/c/52a0d88c328098b4e9fb8f2f3877fec0eff4104b |
| https://git.kernel.org/stable/c/ff727ab0b7d7a56b5ef281f12abd00c4b85894e9 |
| https://git.kernel.org/stable/c/f36e754a1f0bafb9feeea63463de78080acb6de0 |
| https://git.kernel.org/stable/c/76a964ad0ea8f2b10abd69a7532e174a28258283 |
| https://git.kernel.org/stable/c/70df04433fd351ba72bc635bd0b5fe443d9ac964 |
| https://git.kernel.org/stable/c/0458e5428e5e959d201a40ffe71d762a79ecedc4 |
