Bug 2312069 (CVE-2024-46681) - CVE-2024-46681 kernel: pktgen: use cpus_read_lock() in pg_net_init()
Summary: CVE-2024-46681 kernel: pktgen: use cpus_read_lock() in pg_net_init()
Keywords:
Status: NEW
Alias: CVE-2024-46681
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2312184
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-09-13 06:20 UTC by OSIDB Bzimport
Modified: 2024-09-13 11:55 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2024-09-13 06:20:54 UTC 
In the Linux kernel, the following vulnerability has been resolved:

pktgen: use cpus_read_lock() in pg_net_init()

I have seen the WARN_ON(smp_processor_id() != cpu) firing
in pktgen_thread_worker() during tests.

We must use cpus_read_lock()/cpus_read_unlock()
around the for_each_online_cpu(cpu) loop.

While we are at it use WARN_ON_ONCE() to avoid a possible syslog flood.
Comment 1 Michal Findra 2024-09-13 11:46:13 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024091337-CVE-2024-46681-6086@gregkh/T
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