Bug 2348310 (CVE-2022-49637) - CVE-2022-49637 kernel: ipv4: Fix a data-race around sysctl_fib_sync_mem.
Summary: CVE-2022-49637 kernel: ipv4: Fix a data-race around sysctl_fib_sync_mem.
Keywords:
Status: NEW
Alias: CVE-2022-49637
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-02-26 03:24 UTC by OSIDB Bzimport
Modified: 2025-04-03 16:16 UTC (History)
4 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2025-02-26 03:24:58 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ipv4: Fix a data-race around sysctl_fib_sync_mem.

While reading sysctl_fib_sync_mem, it can be changed concurrently.
So, we need to add READ_ONCE() to avoid a data-race.
Comment 3 Avinash Hanwate 2025-02-27 14:02:58 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022618-CVE-2022-49637-402f@gregkh/T
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