Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: xhci: Fix Panther point NULL pointer deref at full-speed re-enumeration re-enumerating full-speed devices after a failed address device command can trigger a NULL pointer dereference. Full-speed devices may need to reconfigure the endpoint 0 Max Packet Size value during enumeration. Usb core calls usb_ep0_reinit() in this case, which ends up calling xhci_configure_endpoint(). On Panther point xHC the xhci_configure_endpoint() function will additionally check and reserve bandwidth in software. Other hosts do this in hardware If xHC address device command fails then a new xhci_virt_device structure is allocated as part of re-enabling the slot, but the bandwidth table pointers are not set up properly here. This triggers the NULL pointer dereference the next time usb_ep0_reinit() is called and xhci_configure_endpoint() tries to check and reserve bandwidth [46710.713538] usb 3-1: new full-speed USB device number 5 using xhci_hcd [46710.713699] usb 3-1: Device not responding to setup address. [46710.917684] usb 3-1: Device not responding to setup address. [46711.125536] usb 3-1: device not accepting address 5, error -71 [46711.125594] BUG: kernel NULL pointer dereference, address: 0000000000000008 [46711.125600] #PF: supervisor read access in kernel mode [46711.125603] #PF: error_code(0x0000) - not-present page [46711.125606] PGD 0 P4D 0 [46711.125610] Oops: Oops: 0000 [#1] PREEMPT SMP PTI [46711.125615] CPU: 1 PID: 25760 Comm: kworker/1:2 Not tainted 6.10.3_2 #1 [46711.125620] Hardware name: Gigabyte Technology Co., Ltd. [46711.125623] Workqueue: usb_hub_wq hub_event [usbcore] [46711.125668] RIP: 0010:xhci_reserve_bandwidth (drivers/usb/host/xhci.c Fix this by making sure bandwidth table pointers are set up correctly after a failed address device command, and additionally by avoiding checking for bandwidth in cases like this where no actual endpoints are added or removed, i.e. only context for default control endpoint 0 is evaluated.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 651aaf36a7d7b36a58980e70133f9437d4f6d312 before ef0a0e616b2789bb804a0ce5e161db03170a85b6; affected 651aaf36a7d7b36a58980e70133f9437d4f6d312 before a57b0ebabe6862dce0a2e0f13e17941ad72fc56b; affected 651aaf36a7d7b36a58980e70133f9437d4f6d312 before 0f0654318e25b2c185e245ba4a591e42fabb5e59; affected 651aaf36a7d7b36a58980e70133f9437d4f6d312 before 365ef7c4277fdd781a695c3553fa157d622d805d; affected 651aaf36a7d7b36a58980e70133f9437d4f6d312 before 5ad898ae82412f8a689d59829804bff2999dd0ea; affected 651aaf36a7d7b36a58980e70133f9437d4f6d312 before 6b99de301d78e1f5249e57ef2c32e1dec3df2bb1; affected 651aaf36a7d7b36a58980e70133f9437d4f6d312 before 8fb9d412ebe2f245f13481e4624b40e651570cbd; affected 651aaf36a7d7b36a58980e70133f9437d4f6d312 before af8e119f52e9c13e556be9e03f27957554a84656 |
| Linux / Linux | affected 4.15; unaffected 0 before 4.15; unaffected 4.19.321 through 4.19.*; unaffected 5.4.283 through 5.4.*; unaffected 5.10.225 through 5.10.*; unaffected 5.15.166 through 5.15.*; unaffected 6.1.107 through 6.1.*; unaffected 6.6.48 through 6.6.*; unaffected 6.10.7 through 6.10.*; unaffected 6.11 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ef0a0e616b2789bb804a0ce5e161db03170a85b6
- https://git.kernel.org/stable/c/a57b0ebabe6862dce0a2e0f13e17941ad72fc56b
- https://git.kernel.org/stable/c/0f0654318e25b2c185e245ba4a591e42fabb5e59
- https://git.kernel.org/stable/c/365ef7c4277fdd781a695c3553fa157d622d805d
- https://git.kernel.org/stable/c/5ad898ae82412f8a689d59829804bff2999dd0ea
- https://git.kernel.org/stable/c/6b99de301d78e1f5249e57ef2c32e1dec3df2bb1
- https://git.kernel.org/stable/c/8fb9d412ebe2f245f13481e4624b40e651570cbd
- https://git.kernel.org/stable/c/af8e119f52e9c13e556be9e03f27957554a84656
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.