CVE-2026-68365
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.
How to fix
- Linux Linuxd9dd87bc1d7e8476d29d68883542ec6198d385c6, 5b39d3da15344b87ef54a0a04f65b52622747e99, 63c4e55d0741cfaf00515e807cad9293445cd348, ee57992c053a6d395e98ced2d4c9cc3b42d8c27a, 64b687f9694777754285d489abbefa3784bc78da, cbe00048b69d67c8a78293cb7681b4c9963b26c7, 1e47d8228b8767c8ac722aedb388f70adeeda43d, faaddd811c5099f11a5f52e68a6b31a5898cda4f or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < d9dd87bc1d7e8476d29d68883542ec6198d385c6, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 5b39d3da15344b87ef54a0a04f65b52622747e99, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 63c4e55d0741cfaf00515e807cad9293445cd348, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < ee57992c053a6d395e98ced2d4c9cc3b42d8c27a, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 64b687f9694777754285d489abbefa3784bc78da, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < cbe00048b69d67c8a78293cb7681b4c9963b26c7, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 1e47d8228b8767c8ac722aedb388f70adeeda43d, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < faaddd811c5099f11a5f52e68a6b31a5898cda4f, 2.6.12 | d9dd87bc1d7e8476d29d68883542ec6198d385c6, 5b39d3da15344b87ef54a0a04f65b52622747e99, 63c4e55d0741cfaf00515e807cad9293445cd348, ee57992c053a6d395e98ced2d4c9cc3b42d8c27a, 64b687f9694777754285d489abbefa3784bc78da, cbe00048b69d67c8a78293cb7681b4c9963b26c7, 1e47d8228b8767c8ac722aedb388f70adeeda43d, faaddd811c5099f11a5f52e68a6b31a5898cda4f |
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