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PUBLISHED

CVE-2024-27001

comedi: vmk80xx: fix incomplete endpoint checking

Reserved:2024-02-19
Published:2024-05-01
Updated:2024-05-13

Description

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:

Product status

Default status
unaffected

49253d542cc0 before 3a63ae0348d9
affected

49253d542cc0 before a3b8ae7e9297
affected

49253d542cc0 before f15370e31597
affected

49253d542cc0 before b0b268eeb087
affected

49253d542cc0 before ac882d6b21bf
affected

49253d542cc0 before 59f33af97961
affected

49253d542cc0 before 6ec3514a7d35
affected

49253d542cc0 before d1718530e3f6
affected

Default status
affected

3.9
affected

Any version before 3.9
unaffected

4.19.313
unaffected

5.4.275
unaffected

5.10.216
unaffected

5.15.157
unaffected

6.1.88
unaffected

6.6.29
unaffected

6.8.8
unaffected

6.9
unaffected

References

https://git.kernel.org/stable/c/3a63ae0348d990e137cca04eced5b08379969ea9

https://git.kernel.org/stable/c/a3b8ae7e9297dd453f2977b011c5bc75eb20e71b

https://git.kernel.org/stable/c/f15370e315976198f338b41611f37ce82af6cf54

https://git.kernel.org/stable/c/b0b268eeb087e324ef3ea71f8e6cabd07630517f

https://git.kernel.org/stable/c/ac882d6b21bffecb57bcc4486701239eef5aa67b

https://git.kernel.org/stable/c/59f33af9796160f851641d960bd93937f282c696

https://git.kernel.org/stable/c/6ec3514a7d35ad9cfab600187612c29f669069d2

https://git.kernel.org/stable/c/d1718530e3f640b7d5f0050e725216eab57a85d8

cve.org CVE-2024-27001

nvd.nist.gov CVE-2024-27001

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