Bug 2347711 (CVE-2022-49604)

Summary: CVE-2022-49604 kernel: ip: Fix data-races around sysctl_ip_fwd_use_pmtu.
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:04:07 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ip: Fix data-races around sysctl_ip_fwd_use_pmtu.

While reading sysctl_ip_fwd_use_pmtu, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its readers.
Comment 1 Avinash Hanwate 2025-02-26 13:12:18 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022612-CVE-2022-49604-eb2c@gregkh/T
Comment 3 Avinash Hanwate 2025-02-26 17:22:30 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022612-CVE-2022-49604-eb2c@gregkh/T