usb: usbtmc: check URB actual_length for interrupt-IN notifications
Summary
| CVE | CVE-2026-63904 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-19 16:17:08 UTC |
| Updated | 2026-07-19 16:17:08 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: usb: usbtmc: check URB actual_length for interrupt-IN notifications USBTMC devices can use an optional interrupt endpoint for notification messages. These typically contain two-byte headers indicating the payload format, but the driver does not check if these headers are present before accessing the data buffers. In cases where the URB actual_length is not enough to fit these headers, the driver will either cause an out-of-bounds read, or consume stale leftover data from a previous notification. Fix by checking if actual_data contains enough bytes for the headers, otherwise resubmit URB to the interrupt endpoint. |
Risk And Classification
EPSS: 0.002100000 probability, percentile 0.113680000 (date 2026-07-20)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected dbf3e7f654c0f06a932b8fcafac78de9d0b81d68 e794bd67b3faf98af46f958897f6b91412c7d2a9 git | Not specified |
| CNA | Linux | Linux | affected dbf3e7f654c0f06a932b8fcafac78de9d0b81d68 e3eec3005de44e7f37d8d7724be636446516ab42 git | Not specified |
| CNA | Linux | Linux | affected dbf3e7f654c0f06a932b8fcafac78de9d0b81d68 ae87f505917e703ae3b487d9663d78826ff43608 git | Not specified |
| CNA | Linux | Linux | affected dbf3e7f654c0f06a932b8fcafac78de9d0b81d68 5de7df75ef3a2756b25fe3d582a4a2970444fe5a git | Not specified |
| CNA | Linux | Linux | affected dbf3e7f654c0f06a932b8fcafac78de9d0b81d68 69020fa089f1bf0e1a10a15265f31b143a846409 git | Not specified |
| CNA | Linux | Linux | affected dbf3e7f654c0f06a932b8fcafac78de9d0b81d68 75f6d3da2cc646983f41807ef98851569c12bca9 git | Not specified |
| CNA | Linux | Linux | affected dbf3e7f654c0f06a932b8fcafac78de9d0b81d68 f141b01eaa58ac7e323931d670318aa247bff087 git | Not specified |
| CNA | Linux | Linux | affected dbf3e7f654c0f06a932b8fcafac78de9d0b81d68 52f2ad3f7e5eb3b5908e1d685d4342519dc9cfcd git | Not specified |
| CNA | Linux | Linux | affected 4.6 | Not specified |
| CNA | Linux | Linux | unaffected 4.6 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.259 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.210 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.176 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.143 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.93 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.35 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.12 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/75f6d3da2cc646983f41807ef98851569c12bca9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e794bd67b3faf98af46f958897f6b91412c7d2a9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e3eec3005de44e7f37d8d7724be636446516ab42 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/5de7df75ef3a2756b25fe3d582a4a2970444fe5a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/52f2ad3f7e5eb3b5908e1d685d4342519dc9cfcd | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/ae87f505917e703ae3b487d9663d78826ff43608 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/69020fa089f1bf0e1a10a15265f31b143a846409 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f141b01eaa58ac7e323931d670318aa247bff087 | 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.