CVE-2026-64240

Summary

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

media: rc: igorplugusb: fix control request setup packet

Commit eac69475b01f ("media: rc: igorplugusb: heed coherency rules") changed the control request storage from an embedded struct to an allocated pointer so it can obey DMA coherency rules.

However, the driver still passes &ir->request to usb_fill_control_urb(). That points the URB setup packet at the pointer field itself rather than at the allocated struct usb_ctrlrequest.

USB core then interprets pointer bytes as the setup packet. This can produce an invalid bRequestType and trigger the control direction warning reported by syzbot:

usb 2-1: BOGUS control dir, pipe 80003580 doesn't match bRequestType 0

Pass ir->request itself as the setup packet.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxbc04b8633b375af6ac8a8bb615258b80fe06cdaa < e823e4294511989f5962e7ad85bf4d179ba74f52affected
LinuxLinux81f0fb813e4bf28b3ca28dc218938a32eb48f740 < 2243ad78ce64d344754260533ae7730c2174a34aaffected
LinuxLinux0e84aa8fc23c7578f105e3a2160f9d0aa2bed79a < aa22590a16e51455c6db802c774b31aadc604a9aaffected
LinuxLinux18d6a7c9e4e63c57157e9a57dd9bf3cd38e4c45a < 060fca8e098387f949e4eedaf215d952e477ac12affected
LinuxLinux0be8fcd9005e3d3b5a61fe34b070a9663adbb4dc < 0d880d2db9856e94127ab09331363bef59f98005affected
LinuxLinux0adac0ee2c42027d80bac02ea9b576a88f8955d3 < f33b5a61673bd220fdaaf4202cf1013d6d66c943affected
LinuxLinuxa62ca67e3c72fb297dc7c86495ba8f7329d7f150 < 5cc3f6db72f77d1a8f7f1cf4ac01803927ffdf15affected
LinuxLinuxeac69475b01fe1e861dfe3960b57fa95671c132e < 171022c7d594c133a45f92357a2a91475edabe20affected
LinuxLinux6.6.140 < 6.6.143affected
LinuxLinux6.12.86 < 6.12.93affected
LinuxLinux6.18.27 < 6.18.35affected
LinuxLinux7.0.4 < 7.0.12affected

Weaknesses

References