CVE-2026-68365

USB: serial: io_edgeport: cap received transmit credits

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: serial: io_edgeport: cap received transmit credits The interrupt-status packet reports transmit credits returned by the device. edge_interrupt_callback() adds the 16-bit value to txCredits without checking maxTxCredits. edge_write() uses txCredits minus the software FIFO count as the amount of data that fits. Since the FIFO is allocated with maxTxCredits bytes, txCredits exceeding maxTxCredits can cause OOB write in ring buffer. Cap accumulated credits at maxTxCredits. Conforming devices should never hit the cap.

Affected

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

Linux Kernel · Linux

95%

2.6.12 ≤ v < 5.10.2652.6.12 ≤ v < 5.15.2162.6.12 ≤ v < 6.1.1832.6.12 ≤ v < 6.12.1012.6.12 ≤ v < 6.18.422.6.12 ≤ v < 6.6.1482.6.12 ≤ v < 7.1.62.6.12 ≤ v < 7.21da177e4c3f41524e886b7f1b8a0c1fc7321cac2 2.6.12

Vendor states this is fixed in 1e47d8228b8767c8ac722aedb388f70adeeda43d (fixed)

Vendor states this is fixed in 5b39d3da15344b87ef54a0a04f65b52622747e99 (fixed)

Vendor states this is fixed in 63c4e55d0741cfaf00515e807cad9293445cd348 (fixed)

Vendor states this is fixed in 64b687f9694777754285d489abbefa3784bc78da (fixed)

Vendor states this is fixed in cbe00048b69d67c8a78293cb7681b4c9963b26c7 (fixed)

Vendor states this is fixed in d9dd87bc1d7e8476d29d68883542ec6198d385c6 (fixed)

Vendor states this is fixed in ee57992c053a6d395e98ced2d4c9cc3b42d8c27a (fixed)

Vendor states this is fixed in faaddd811c5099f11a5f52e68a6b31a5898cda4f (fixed)

Vendor states this is fixed in 2.6.12 (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)