CVE-2024-44968 (GCVE-0-2024-44968)
Vulnerability from cvelistv5
Published
2024-09-04 18:56
Modified
2025-05-04 09:29
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/541a900d245536d4809cb1aa322c3fcc2cdb58a6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/668c6c4a7e9e9f081c06b70f30104fb7013437edPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6881e75237a84093d0986f56223db3724619f26ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b3ec186ba93e333e9efe7254e7e31c1828e5d2dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7dd12f85f150010ef7518201c63fa7e395f5c3e9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b9d604933d5fd72dd37f24e1dc35f778297d745aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f54abf332a2bc0413cfa8bd6a8511f7aa99faea0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f91fb47ecacc178a83a77eeebd25cbaec18c01d6Patch
Impacted products
Vendor Product Version
Linux Linux Version: dfe19aa91378972f10530635ad83b2d77f481044
Version: 457a1c87d454455d671a3045cf0b56157be110a1
Version: 9ef7190228145f959d9bc0ddca40ecf76bb413b0
Version: d3b165c10473aa6fc6141bb5b1f6e5b50c1fb774
Version: 408bfb6b0a7f22e971ce6b600aec448769e580a8
Version: 3a58c590f6bd1d20eb1e76c5cea31c36cc032339
Version: 2cdab4b4bf77369961f706cdeb7d040db10c5217
Version: f7d43dd206e7e18c182f200e67a8db8c209907fa
 Create a notification for this product.
   Linux Linux Version: 6.1.103   ≤
Version: 6.6.44   ≤
Version: 6.10.3   ≤
Create a notification for this product.
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