CVE-2024-44968 (GCVE-0-2024-44968)

Vulnerability from cvelistv5 – Published: 2024-09-04 18:56 – Updated: 2025-11-03 22:14
VLAI?
Title
tick/broadcast: Move per CPU pointer access into the atomic section
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: dfe19aa91378972f10530635ad83b2d77f481044 , < f54abf332a2bc0413cfa8bd6a8511f7aa99faea0 (git)
Affected: 457a1c87d454455d671a3045cf0b56157be110a1 , < f91fb47ecacc178a83a77eeebd25cbaec18c01d6 (git)
Affected: 9ef7190228145f959d9bc0ddca40ecf76bb413b0 , < 668c6c4a7e9e9f081c06b70f30104fb7013437ed (git)
Affected: d3b165c10473aa6fc6141bb5b1f6e5b50c1fb774 , < 541a900d245536d4809cb1aa322c3fcc2cdb58a6 (git)
Affected: 408bfb6b0a7f22e971ce6b600aec448769e580a8 , < 7b3ec186ba93e333e9efe7254e7e31c1828e5d2d (git)
Affected: 3a58c590f6bd1d20eb1e76c5cea31c36cc032339 , < b9d604933d5fd72dd37f24e1dc35f778297d745a (git)
Affected: 2cdab4b4bf77369961f706cdeb7d040db10c5217 , < 7dd12f85f150010ef7518201c63fa7e395f5c3e9 (git)
Affected: f7d43dd206e7e18c182f200e67a8db8c209907fa , < 6881e75237a84093d0986f56223db3724619f26e (git)
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    Linux Linux Affected: 6.1.103 , < 6.1.105 (semver)
Affected: 6.6.44 , < 6.6.46 (semver)
Affected: 6.10.3 , < 6.10.5 (semver)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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