CVE-2024-35878: of: module: prevent NULL pointer dereference in vsnprintf()
First published: Sun May 19 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | <=5.10.223-1<=5.10.226-1<=6.1.106-3<=6.1.112-1 | 6.10.11-1 6.11.2-1 |
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Reference Links
- https://git.kernel.org/stable/c/544561dc56f7e69a053c25e11e6170f48bb97898
- https://git.kernel.org/stable/c/a1aa5390cc912934fee76ce80af5f940452fa987
- https://git.kernel.org/stable/c/e4a449368a2ce6d57a775d0ead27fc07f5a86e5b
- https://launchpad.net/bugs/cve/CVE-2024-35878
- https://git.kernel.org/linus/a1aa5390cc912934fee76ce80af5f940452fa987
- https://security-tracker.debian.org/tracker/CVE-2024-35878
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-35878
- https://nvd.nist.gov/vuln/detail/CVE-2024-35878
- https://ubuntu.com/security/CVE-2024-35878
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