CVE-2024-49954

static_call: Replace pointless WARN_ON() in static_call_module_notify()

Description

In the Linux kernel, the following vulnerability has been resolved: static_call: Replace pointless WARN_ON() in static_call_module_notify() static_call_module_notify() triggers a WARN_ON(), when memory allocation fails in __static_call_add_module(). That's not really justified, because the failure case must be correctly handled by the well known call chain and the error code is passed through to the initiating userspace application. A memory allocation fail is not a fatal problem, but the WARN_ON() takes the machine out when panic_on_warn is set. Replace it with a pr_warn().

5.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.04%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/bc9356513d56b688775497b7ac6f2b967f46a80c	patch
https://git.kernel.org/stable/c/ea2cdf4da093d0482f0ef36ba971e2e0c7673425	patch
https://git.kernel.org/stable/c/e67534bd31d79952b50e791e92adf0b3e6c13b8c	patch
https://git.kernel.org/stable/c/85a104aaef1f56623acc10ba4c42d5f046ba65b7	patch
https://git.kernel.org/stable/c/b83bef74c121a3311240fc4002d23486b85355e4	patch
https://git.kernel.org/stable/c/fe513c2ef0a172a58f158e2e70465c4317f0a9a2	patch

Frequently Asked Questions

What is the severity of CVE-2024-49954?: CVE-2024-49954 has been scored as a medium severity vulnerability.
How to fix CVE-2024-49954?: To fix CVE-2024-49954, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-49954 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-49954 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-49954?: CVE-2024-49954 affects Linux Linux, Linux Linux.

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