发布于3月6日3月6日 Members Red Hat: CVE-2024-35878: kernel: of: module: prevent NULL pointer dereference in vsnprintf() (Multiple Advisories) Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 05/19/2024 Created 12/06/2024 Added 12/05/2024 Modified 12/05/2024 Description 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. Solution(s) redhat-upgrade-kernel redhat-upgrade-kernel-rt References CVE-2024-35878 RHSA-2024:9315
