CVE-2024-47408: net/smc: check smcd_v2_ext_offset when receiving proposal msg
In the Linux kernel, the following vulnerability has been resolved:
net/smc: check smcdv2extoffset when receiving proposal msg
When receiving proposal msg in server, the field smcdv2extoffset in proposal msg is from the remote client and can not be fully trusted. Once the value of smcdv2extoffset exceed the max value, there has the chance to access wrong address, and crash may happen.
This patch checks the value of smcdv2extoffset before using it.
Other sources
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— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1Fixed in 6.12.27-1 - Upgrade
Upgrade
debian/linux-6.1to a version that resolves this vulnerability.Fixed in 6.1.129-1~deb11u1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-47408?
CVE-2024-47408 is classified as a medium severity vulnerability in the Linux kernel.
How do I fix CVE-2024-47408?
To fix CVE-2024-47408, users should update their Linux kernel to the latest patched version provided by their distribution.
What causes CVE-2024-47408?
CVE-2024-47408 is caused by inadequate validation of the smcd_v2_ext_offset field in a proposal message received from a remote client.
Who is affected by CVE-2024-47408?
All versions of the Linux kernel that handle SMC (Shared Memory Communication) are affected by CVE-2024-47408.
What is the impact of CVE-2024-47408?
The impact of CVE-2024-47408 includes potential denial of service or arbitrary code execution due to improper validation.