CVE-2024-49568: net/smc: check v2_ext_offset/eid_cnt/ism_gid_cnt when receiving proposal msg
In the Linux kernel, the following vulnerability has been resolved:
net/smc: check v2extoffset/eidcnt/ismgidcnt when receiving proposal msg
When receiving proposal msg in server, the fields v2extoffset/ eidcnt/ismgidcnt in proposal msg are from the remote client and can not be fully trusted. Especially the field v2extoffset, once exceed the max value, there has the chance to access wrong address, and crash may happen.
This patch checks the fields v2extoffset/eidcnt/ismgidcnt before using them.
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 6.12.27-1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-49568?
CVE-2024-49568 is classified as a medium severity vulnerability in the Linux kernel.
How do I fix CVE-2024-49568?
To fix CVE-2024-49568, update your Linux kernel to the latest patched version.
What components are affected by CVE-2024-49568?
CVE-2024-49568 affects the networking component of the Linux kernel, specifically the net/smc files.
Who is impacted by CVE-2024-49568?
Users and organizations running vulnerable versions of the Linux kernel are impacted by CVE-2024-49568.
What type of attacks can exploit CVE-2024-49568?
CVE-2024-49568 can potentially be exploited for denial-of-service attacks or unauthorized access.