Description
In the Linux kernel, the following vulnerability has been resolved: USB: serial: mos7840: fix crash on resume Since commit c49cfa917025 ("USB: serial: use generic method if no alternative is provided in usb serial layer"), USB serial core calls the generic resume implementation when the driver has not provided one. This can trigger a crash on resume with mos7840 since support for multiple read URBs was added back in 2011. Specifically, both port read URBs are now submitted on resume for open ports, but the context pointer of the second URB is left set to the core rather than mos7840 port structure. Fix this by implementing dedicated suspend and resume functions for mos7840. Tested with Delock 87414 USB 2.0 to 4x serial adapter. [ johan: analyse crash and rewrite commit message; set busy flag on resume; drop bulk-in check; drop unnecessary usb_kill_urb() ]
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
d83b405383c965498923f3561c3321e2b5df5727 to < 932a86a711c722b45ed47ba2103adca34d225b33affectedd83b405383c965498923f3561c3321e2b5df5727 to < b14aa5673e0a8077ff4b74f0bb260735e7d5e6a4affectedd83b405383c965498923f3561c3321e2b5df5727 to < 1094ed500987e67a9d18b0f95e1812f1cc720856affectedd83b405383c965498923f3561c3321e2b5df5727 to < 5ae6a64f18211851c8df6b4221381c438b9a7348affectedd83b405383c965498923f3561c3321e2b5df5727 to < 553e67dec846323b5575e78a776cf594c13f98c4affectedd83b405383c965498923f3561c3321e2b5df5727 to < c15a688e49987385baa8804bf65d570e362f8576affected
Linux Linux
Default version status: affected
3.3affected0 to < 3.3unaffected5.10.222 to ≤ 5.10.*unaffected5.15.163 to ≤ 5.15.*unaffected6.1.100 to ≤ 6.1.*unaffected6.6.41 to ≤ 6.6.*unaffected6.9.10 to ≤ 6.9.*unaffected6.10 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/932a86a711c722b45ed47ba2103adca34d225b33 ↗
- https://git.kernel.org/stable/c/b14aa5673e0a8077ff4b74f0bb260735e7d5e6a4 ↗
- https://git.kernel.org/stable/c/1094ed500987e67a9d18b0f95e1812f1cc720856 ↗
- https://git.kernel.org/stable/c/5ae6a64f18211851c8df6b4221381c438b9a7348 ↗
- https://git.kernel.org/stable/c/553e67dec846323b5575e78a776cf594c13f98c4 ↗
- https://git.kernel.org/stable/c/c15a688e49987385baa8804bf65d570e362f8576 ↗
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html ↗