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CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-21916

usb: atm: cxacru: fix a flaw in existing endpoint checks

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: usb: atm: cxacru: fix a flaw in existing endpoint checks Syzbot once again identified a flaw in usb endpoint checking, see [1]. This time the issue stems from a commit authored by me (2eabb655a968 ("usb: atm: cxacru: fix endpoint checking in cxacru_bind()")). While using usb_find_common_endpoints() may usually be enough to discard devices with wrong endpoints, in this case one needs more than just finding and identifying the sufficient number of endpoints of correct types - one needs to check the endpoint's address as well. Since cxacru_bind() fills URBs with CXACRU_EP_CMD address in mind, switch the endpoint verification approach to usb_check_XXX_endpoints() instead to fix incomplete ep testing. [1] Syzbot report: usb 5-1: BOGUS urb xfer, pipe 3 != type 1 WARNING: CPU: 0 PID: 1378 at drivers/usb/core/urb.c:504 usb_submit_urb+0xc4e/0x18c0 drivers/usb/core/urb.c:503 ... RIP: 0010:usb_submit_urb+0xc4e/0x18c0 drivers/usb/core/urb.c:503 ... Call Trace: <TASK> cxacru_cm+0x3c8/0xe50 drivers/usb/atm/cxacru.c:649 cxacru_card_status drivers/usb/atm/cxacru.c:760 [inline] cxacru_bind+0xcf9/0x1150 drivers/usb/atm/cxacru.c:1223 usbatm_usb_probe+0x314/0x1d30 drivers/usb/atm/usbatm.c:1058 cxacru_usb_probe+0x184/0x220 drivers/usb/atm/cxacru.c:1377 usb_probe_interface+0x641/0xbb0 drivers/usb/core/driver.c:396 really_probe+0x2b9/0xad0 drivers/base/dd.c:658 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800 driver_probe_device+0x50/0x430 drivers/base/dd.c:830 ...

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 23926d316d2836315cb113569f91393266eb5b47 to < dcd592ab9dd8a2bfc36e75583b9006db2a77ec24affected
  • 75ddbf776dd04a09fb9e5267ead5d0c989f84506 to < 319529e0356bd904528c64647725a2272d297c83affected
  • 1aac4be1aaa5177506219f01dce5e29194e5e95a to < bf4409f84023b52b5e9b36c0a071a121eee42138affected
  • 5584c776a1af7807ca815ee6265f2c1429fc5727 to < 197e78076c5ecd895f109158c4ea2954b9919af6affected
  • f536f09eb45e4de8d1b9accee9d992aa1846f1d4 to < a0475a885d69849b1ade38add6d64338dfa83a8faffected
  • 2eabb655a968b862bc0c31629a09f0fbf3c80d51 to < cfc295f7cccf66cbd5123416bcf1bee2e1bd37deaffected
  • 2eabb655a968b862bc0c31629a09f0fbf3c80d51 to < 903b80c21458bb1e34c3a78c5fdc553821e357f8affected
  • 2eabb655a968b862bc0c31629a09f0fbf3c80d51 to < c90aad369899a607cfbc002bebeafd51e31900cdaffected
  • 5159a81924311c1ec786ad9fdef784ead8676a6aaffected
  • ac9007520e392541a29daebaae8b9109007bc781affected
  • 5.4.279 to < 5.4.291affected
  • 5.10.221 to < 5.10.235affected
  • 5.15.162 to < 5.15.179affected
  • 6.1.97 to < 6.1.131affected
  • 6.6.37 to < 6.6.83affected
  • 4.19.317 to < 4.20affected
  • 6.9.8 to < 6.10affected

Linux Linux

Default version status: affected

  • 6.10affected
  • 0 to < 6.10unaffected
  • 5.4.291 to ≤ 5.4.*unaffected
  • 5.10.235 to ≤ 5.10.*unaffected
  • 5.15.179 to ≤ 5.15.*unaffected
  • 6.1.131 to ≤ 6.1.*unaffected
  • 6.6.83 to ≤ 6.6.*unaffected
  • 6.12.19 to ≤ 6.12.*unaffected
  • 6.13.7 to ≤ 6.13.*unaffected
  • 6.14 to ≤ *unaffected

References