Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: of: module: prevent NULL pointer dereference in vsnprintf() In of_modalias(), we can get passed the str and len parameters which would cause a kernel oops in vsnprintf() since it only allows passing a NULL ptr when the length is also 0. Also, we need to filter out the negative values of the len parameter as these will result in a really huge buffer since snprintf() takes size_t parameter while ours is ssize_t... Found by Linux Verification Center (linuxtesting.org) with the Svace static analysis tool.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bd7a7ed774afd1a4174df34227626c95573be517 before e4a449368a2ce6d57a775d0ead27fc07f5a86e5b; affected bd7a7ed774afd1a4174df34227626c95573be517 before 544561dc56f7e69a053c25e11e6170f48bb97898; affected bd7a7ed774afd1a4174df34227626c95573be517 before a1aa5390cc912934fee76ce80af5f940452fa987 |
| Linux / Linux | affected 6.4; unaffected 0 before 6.4; unaffected 6.6.26 through 6.6.*; unaffected 6.8.5 through 6.8.*; unaffected 6.9 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e4a449368a2ce6d57a775d0ead27fc07f5a86e5b
- https://git.kernel.org/stable/c/544561dc56f7e69a053c25e11e6170f48bb97898
- https://git.kernel.org/stable/c/a1aa5390cc912934fee76ce80af5f940452fa987
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.