CVE-2022-49905

net/smc: Fix possible leaked pernet namespace in smc_init()

Description

In the Linux kernel, the following vulnerability has been resolved: net/smc: Fix possible leaked pernet namespace in smc_init() In smc_init(), register_pernet_subsys(&smc_net_stat_ops) is called without any error handling. If it fails, registering of &smc_net_ops won't be reverted. And if smc_nl_init() fails, &smc_net_stat_ops itself won't be reverted. This leaves wild ops in subsystem linkedlist and when another module tries to call register_pernet_operations() it triggers page fault: BUG: unable to handle page fault for address: fffffbfff81b964c RIP: 0010:register_pernet_operations+0x1b9/0x5f0 Call Trace: <TASK> register_pernet_subsys+0x29/0x40 ebtables_init+0x58/0x1000 [ebtables] ...

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/61defd6450a9ef4a1487090449999b0fd83518ef
https://git.kernel.org/stable/c/c97daf836f7caf81d3144b8cd2b2a51f9bc3bd09
https://git.kernel.org/stable/c/62ff373da2534534c55debe6c724c7fe14adb97f

Frequently Asked Questions

What is the severity of CVE-2022-49905?: CVE-2022-49905 has not yet been assigned a CVSS score.
How to fix CVE-2022-49905?: To fix CVE-2022-49905, 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-2022-49905 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49905 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-2022-49905?: CVE-2022-49905 affects Linux Linux, Linux Linux.

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