Bug 2348197 (CVE-2022-49632)

Summary: CVE-2022-49632 kernel: icmp: Fix a data-race around sysctl_icmp_errors_use_inbound_ifaddr.
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's ICMP protocol. A race condition can occur when reading the sysctl_icmp_errors_use_inbound_ifaddr resource due to a missing lock, potentially impacting system stability and resulting in a denial of service.
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Description OSIDB Bzimport 2025-02-26 03:21:00 UTC 
In the Linux kernel, the following vulnerability has been resolved:

icmp: Fix a data-race around sysctl_icmp_errors_use_inbound_ifaddr.

While reading sysctl_icmp_errors_use_inbound_ifaddr, it can be changed
concurrently.  Thus, we need to add READ_ONCE() to its reader.
Comment 1 Avinash Hanwate 2025-02-26 19:04:56 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022617-CVE-2022-49632-ea1e@gregkh/T