PT-2025-8336 · Linux+2 · Linux Kernel+2
Song Liu
·
Published
2022-05-26
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Updated
2025-04-15
·
CVE-2022-49402
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A general protection fault can occur in the Linux kernel due to a failure in the
register ftrace direct function. This issue arises when the ftrace find rec direct function is called, leading to a non-canonical address access. The problem is triggered by loading a livepatch that patches a kernel function and then running a bpftrace command that fails, causing a general protection fault on subsequent attempts. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.Recommendations
To resolve this issue, update the Linux kernel to a version that includes the fix for the
register ftrace direct failure. As a temporary workaround, consider disabling the bpftrace functionality until a patch is available. Additionally, restrict access to the ftrace module to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Exploit
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Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Suse