CVE-2021-47170
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
USB: usbfs: Don't WARN about excessively large memory allocations
In the Linux kernel, the following vulnerability has been resolved: USB: usbfs: Don't WARN about excessively large memory allocations Syzbot found that the kernel generates a WARNing if the user tries to submit a bulk transfer through usbfs with a buffer that is way too large. This isn't a bug in the kernel; it's merely an invalid request from the user and the usbfs code does handle it correctly. In theory the same thing can happen with async transfers, or with the packet descriptor table for isochronous transfers. To prevent the MM subsystem from complaining about these bad allocation requests, add the __GFP_NOWARN flag to the kmalloc calls for these buffers.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| add1aaeabe6b08ed26381a2a06e505b2f09c3ba5 | affected | git | 2ab21d6e1411999b5fb43434f421f00bf50002eb | Unavailable | None listed |
| add1aaeabe6b08ed26381a2a06e505b2f09c3ba5 | affected | git | 2c835fede13e03f2743a333e4370b5ed2db91e83 | Unavailable | None listed |
| add1aaeabe6b08ed26381a2a06e505b2f09c3ba5 | affected | git | 8d83f109e920d2776991fa142bb904d985dca2ed | Unavailable | None listed |
| add1aaeabe6b08ed26381a2a06e505b2f09c3ba5 | affected | git | 9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098 | Unavailable | None listed |
| add1aaeabe6b08ed26381a2a06e505b2f09c3ba5 | affected | git | 4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.3 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.3 | Unavailable | None listed |
| 4.19.193 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.124 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.42 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.12.9 | unaffected | semver | Unavailable | 5.12.* | None listed |
| 5.13 | unaffected | original_commit_for_fix | Unavailable | * | None listed |