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 ...
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 23926d316d2836315cb113569f91393266eb5b47, < dcd592ab9dd8a2bfc36e75583b9006db2a77ec24; >= 75ddbf776dd04a09fb9e5267ead5d0c989f84506, < 319529e0356bd904528c64647725a2272d297c83; >= 1aac4be1aaa5177506219f01dce5e29194e5e95a, < bf4409f84023b52b5e9b36c0a071a121eee42138; >= 5584c776a1af7807ca815ee6265f2c1429fc5727, < 197e78076c5ecd895f109158c4ea2954b9919af6; >= f536f09eb45e4de8d1b9accee9d992aa1846f1d4, < a0475a885d69849b1ade38add6d64338dfa83a8f; >= 2eabb655a968b862bc0c31629a09f0fbf3c80d51, < cfc295f7cccf66cbd5123416bcf1bee2e1bd37de; >= 2eabb655a968b862bc0c31629a09f0fbf3c80d51, < 903b80c21458bb1e34c3a78c5fdc553821e357f8; >= 2eabb655a968b862bc0c31629a09f0fbf3c80d51, < c90aad369899a607cfbc002bebeafd51e31900cd; 5159a81924311c1ec786ad9fdef784ead8676a6a; ac9007520e392541a29daebaae8b9109007bc781; >= 5.4.279, < 5.4.291; >= 5.10.221, < 5.10.235; >= 5.15.162, < 5.15.179; >= 6.1.97, < 6.1.131; >= 6.6.37, < 6.6.83; >= 4.19.317, < 4.20; >= 6.9.8, < 6.10 |
| Linux | Linux | 6.10 |
References
- https://git.kernel.org/stable/c/197e78076c5ecd895f109158c4ea2954b9919af6Patch
- https://git.kernel.org/stable/c/319529e0356bd904528c64647725a2272d297c83Patch
- https://git.kernel.org/stable/c/903b80c21458bb1e34c3a78c5fdc553821e357f8Patch
- https://git.kernel.org/stable/c/a0475a885d69849b1ade38add6d64338dfa83a8fPatch
- https://git.kernel.org/stable/c/bf4409f84023b52b5e9b36c0a071a121eee42138Patch
- https://git.kernel.org/stable/c/c90aad369899a607cfbc002bebeafd51e31900cdPatch
- https://git.kernel.org/stable/c/cfc295f7cccf66cbd5123416bcf1bee2e1bd37dePatch
- https://git.kernel.org/stable/c/dcd592ab9dd8a2bfc36e75583b9006db2a77ec24Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Timeline
- Published
- Apr 1, 2025
- Last modified
- Nov 5, 2026
- NVD status
- Modified