In the Linux kernel, the following vulnerability has been resolved: net: usb: aqc111: Do not perform PM inside suspend callback syzbot reports "task hung in rpm_resume" This is caused by aqc111_suspend calling the PM variant of its write_cmd routine. The simplified call trace looks like this: rpm_suspend() usb_suspend_both() - here udev->dev.power.runtime_status == RPM_SUSPENDING aqc111_suspend() - called for the usb device interface aqc111_write32_cmd() usb_autopm_get_interface() pm_runtime_resume_and_get() rpm_resume() - here we call rpm_resume() on our parent rpm_resume() - Here we wait for a status change that will never happen. At this point we block another task which holds rtnl_lock and locks up the whole networking stack. Fix this by replacing the write_cmd calls with their _nopm variants
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | LOCAL |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | LOW |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | NONE |
| Integrity Impact | NONE |
| Availability Impact | HIGH |
| Source | Type | Description |
|---|---|---|
| [email protected] | Primary |
en
NVD-CWE-noinfo
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| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdc454580> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bde495300> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdd495dc0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702b806131c0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdc456fc0> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdc456640> | Operating System |
| linux | linux_kernel | * | <built-in method update of dict object at 0x702bdc455c40> | Operating System |
| linux | linux_kernel | 5.0 | <built-in method update of dict object at 0x702bde4952c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bdc455d80> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bdc456680> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702b83bbabc0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bde497480> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bdc4572c0> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bdc454300> | Operating System |
| linux | linux_kernel | 7.0 | <built-in method update of dict object at 0x702bde497440> | Operating System |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:5.0:-:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* |
| Yes | cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:* |