usb: gadget: printer: fix infinite loop in printer_read()
Summary
| CVE | CVE-2026-68369 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-10 13:20:29 UTC |
| Updated | 2026-08-19 17:20:46 UTC |
| 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. |
Risk And Classification
EPSS: 0.002000000 probability, percentile 0.101860000 (date 2026-08-19)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected b185f01a9ab7af586133be2555298e960237359b 3f81197364b57e5318620c75f3bd63f405f60552 git | Not specified |
| CNA | Linux | Linux | affected b185f01a9ab7af586133be2555298e960237359b e225e2998e5a9b83c838dbbe4511fb0d63f88daf git | Not specified |
| CNA | Linux | Linux | affected b185f01a9ab7af586133be2555298e960237359b 3081b0e187065c3b9577e393ad664b12854aeaf3 git | Not specified |
| CNA | Linux | Linux | affected b185f01a9ab7af586133be2555298e960237359b 994afccfdcceb73be33f69a8a8ea71e260c9eca5 git | Not specified |
| CNA | Linux | Linux | affected b185f01a9ab7af586133be2555298e960237359b e03597ad9494b500344076589aeaa6c6d2d381d3 git | Not specified |
| CNA | Linux | Linux | affected b185f01a9ab7af586133be2555298e960237359b 4cde0b38cc0cb8b7dc17295801015148de37d1d2 git | Not specified |
| CNA | Linux | Linux | affected b185f01a9ab7af586133be2555298e960237359b e41bbbbb1740ce4d7270ab1cdeca13892d6a8d2e git | Not specified |
| CNA | Linux | Linux | affected b185f01a9ab7af586133be2555298e960237359b c2e819be6a5c7f34344926b4bd7e3dfca58cf48a git | Not specified |
| CNA | Linux | Linux | affected 4.1 | Not specified |
| CNA | Linux | Linux | unaffected 4.1 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.265 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.216 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.183 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.148 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.101 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.42 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.6 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/e41bbbbb1740ce4d7270ab1cdeca13892d6a8d2e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/994afccfdcceb73be33f69a8a8ea71e260c9eca5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3081b0e187065c3b9577e393ad664b12854aeaf3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e03597ad9494b500344076589aeaa6c6d2d381d3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/c2e819be6a5c7f34344926b4bd7e3dfca58cf48a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e225e2998e5a9b83c838dbbe4511fb0d63f88daf | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/3f81197364b57e5318620c75f3bd63f405f60552 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4cde0b38cc0cb8b7dc17295801015148de37d1d2 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.