CVE-2026-68369

usb: gadget: printer: fix infinite loop in printer_read()

N/A

Published: August 10, 2026 at 12:03 PM UTC

Updated: August 19, 2026 at 05:20 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: printer: fix infinite loop in printer_read() printer_read() uses the same variable for the requested copy size and the number of bytes actually copied to user space. copy_to_user() returns the number of bytes not copied, so when it fails to copy anything, the computed copied length becomes zero. In that case len, buf, current_rx_bytes and current_rx_buf are left unchanged. If RX data is available and the user buffer remains unwritable, the read loop can repeat indefinitely. Track the copied length separately and return -EFAULT, or the number of bytes already copied, if an iteration makes no progress.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.1 ≤ v < 5.10.2654.1 ≤ v < 5.15.2164.1 ≤ v < 6.1.1834.1 ≤ v < 6.12.1014.1 ≤ v < 6.18.424.1 ≤ v < 6.6.1484.1 ≤ v < 7.1.64.1 ≤ v < 7.24.1b185f01a9ab7af586133be2555298e960237359b

Vendor states this is fixed in 3081b0e187065c3b9577e393ad664b12854aeaf3 (fixed)

Vendor states this is fixed in 3f81197364b57e5318620c75f3bd63f405f60552 (fixed)

Vendor states this is fixed in 4cde0b38cc0cb8b7dc17295801015148de37d1d2 (fixed)

Vendor states this is fixed in 994afccfdcceb73be33f69a8a8ea71e260c9eca5 (fixed)

Vendor states this is fixed in c2e819be6a5c7f34344926b4bd7e3dfca58cf48a (fixed)

Vendor states this is fixed in e03597ad9494b500344076589aeaa6c6d2d381d3 (fixed)

Vendor states this is fixed in e225e2998e5a9b83c838dbbe4511fb0d63f88daf (fixed)

Vendor states this is fixed in e41bbbbb1740ce4d7270ab1cdeca13892d6a8d2e (fixed)

Vendor states this is fixed in 4.1 (unaffected)

Vendor states this is fixed in 5.10.265 (unaffected)

Vendor states this is fixed in 5.15.216 (unaffected)

Vendor states this is fixed in 6.1.183 (unaffected)