CVE-2024-44968 (GCVE-0-2024-44968)
Vulnerability from cvelistv5
Published
2024-09-04 18:56
Modified
2026-05-11 20:32
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: tick/broadcast: Move per CPU pointer access into the atomic section The recent fix for making the take over of the broadcast timer more reliable retrieves a per CPU pointer in preemptible context. This went unnoticed as compilers hoist the access into the non-preemptible region where the pointer is actually used. But of course it's valid that the compiler keeps it at the place where the code puts it which rightfully triggers: BUG: using smp_processor_id() in preemptible [00000000] code: caller is hotplug_cpu__broadcast_tick_pull+0x1c/0xc0 Move it to the actual usage site which is in a non-preemptible region.
References
Impacted products
Vendor Product Version
Linux Linux Version: dfe19aa91378972f10530635ad83b2d77f481044
Version: 457a1c87d454455d671a3045cf0b56157be110a1
Version: 9ef7190228145f959d9bc0ddca40ecf76bb413b0
Version: d3b165c10473aa6fc6141bb5b1f6e5b50c1fb774
Version: 408bfb6b0a7f22e971ce6b600aec448769e580a8
Version: 3a58c590f6bd1d20eb1e76c5cea31c36cc032339
Version: 2cdab4b4bf77369961f706cdeb7d040db10c5217
Version: f7d43dd206e7e18c182f200e67a8db8c209907fa
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   Linux Linux Version: 6.1.103   ≤
Version: 6.6.44   ≤
Version: 6.10.3   ≤
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