CVE-2024-27001

Summary

In the Linux kernel, the following vulnerability has been resolved:

comedi: vmk80xx: fix incomplete endpoint checking

While vmk80xx does have endpoint checking implemented, some things can fall through the cracks. Depending on the hardware model, URBs can have either bulk or interrupt type, and current version of vmk80xx_find_usb_endpoints() function does not take that fully into account. While this warning does not seem to be too harmful, at the very least it will crash systems with 'panic_on_warn' set on them.

Fix the issue found by Syzkaller [1] by somewhat simplifying the endpoint checking process with usb_find_common_endpoints() and ensuring that only expected endpoint types are present.

This patch has not been tested on real hardware.

[1] Syzkaller report: usb 1-1: BOGUS urb xfer, pipe 1 != type 3 WARNING: CPU: 0 PID: 781 at drivers/usb/core/urb.c:504 usb_submit_urb+0xc4e/0x18c0 drivers/usb/core/urb.c:503 … Call Trace: <TASK> usb_start_wait_urb+0x113/0x520 drivers/usb/core/message.c:59 vmk80xx_reset_device drivers/comedi/drivers/vmk80xx.c:227 [inline] vmk80xx_auto_attach+0xa1c/0x1a40 drivers/comedi/drivers/vmk80xx.c:818 comedi_auto_config+0x238/0x380 drivers/comedi/drivers.c:1067 usb_probe_interface+0x5cd/0xb00 drivers/usb/core/driver.c:399 …

Similar issue also found by Syzkaller:

Affected Software

VendorProductVersion RangeStatus
LinuxLinux49253d542cc0f5f771dc254d248162a2a666649d < 3a63ae0348d990e137cca04eced5b08379969ea9affected
LinuxLinux49253d542cc0f5f771dc254d248162a2a666649d < a3b8ae7e9297dd453f2977b011c5bc75eb20e71baffected
LinuxLinux49253d542cc0f5f771dc254d248162a2a666649d < f15370e315976198f338b41611f37ce82af6cf54affected
LinuxLinux49253d542cc0f5f771dc254d248162a2a666649d < b0b268eeb087e324ef3ea71f8e6cabd07630517faffected
LinuxLinux49253d542cc0f5f771dc254d248162a2a666649d < ac882d6b21bffecb57bcc4486701239eef5aa67baffected
LinuxLinux49253d542cc0f5f771dc254d248162a2a666649d < 59f33af9796160f851641d960bd93937f282c696affected
LinuxLinux49253d542cc0f5f771dc254d248162a2a666649d < 6ec3514a7d35ad9cfab600187612c29f669069d2affected
LinuxLinux49253d542cc0f5f771dc254d248162a2a666649d < d1718530e3f640b7d5f0050e725216eab57a85d8affected
LinuxLinux3.9affected
LinuxLinux0 < 3.9unaffected
LinuxLinux4.19.313 <= 4.19.*unaffected
LinuxLinux5.4.275 <= 5.4.*unaffected
LinuxLinux5.10.216 <= 5.10.*unaffected
LinuxLinux5.15.157 <= 5.15.*unaffected
LinuxLinux6.1.88 <= 6.1.*unaffected
LinuxLinux6.6.29 <= 6.6.*unaffected
LinuxLinux6.8.8 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References