CVE - CVE-2024-44968

CVE-ID
CVE-2024-44968	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/541a900d245536d4809cb1aa322c3fcc2cdb58a6 URL:https://git.kernel.org/stable/c/541a900d245536d4809cb1aa322c3fcc2cdb58a6 MISC:https://git.kernel.org/stable/c/668c6c4a7e9e9f081c06b70f30104fb7013437ed URL:https://git.kernel.org/stable/c/668c6c4a7e9e9f081c06b70f30104fb7013437ed MISC:https://git.kernel.org/stable/c/6881e75237a84093d0986f56223db3724619f26e URL:https://git.kernel.org/stable/c/6881e75237a84093d0986f56223db3724619f26e MISC:https://git.kernel.org/stable/c/7b3ec186ba93e333e9efe7254e7e31c1828e5d2d URL:https://git.kernel.org/stable/c/7b3ec186ba93e333e9efe7254e7e31c1828e5d2d MISC:https://git.kernel.org/stable/c/7dd12f85f150010ef7518201c63fa7e395f5c3e9 URL:https://git.kernel.org/stable/c/7dd12f85f150010ef7518201c63fa7e395f5c3e9 MISC:https://git.kernel.org/stable/c/b9d604933d5fd72dd37f24e1dc35f778297d745a URL:https://git.kernel.org/stable/c/b9d604933d5fd72dd37f24e1dc35f778297d745a MISC:https://git.kernel.org/stable/c/f54abf332a2bc0413cfa8bd6a8511f7aa99faea0 URL:https://git.kernel.org/stable/c/f54abf332a2bc0413cfa8bd6a8511f7aa99faea0 MISC:https://git.kernel.org/stable/c/f91fb47ecacc178a83a77eeebd25cbaec18c01d6 URL:https://git.kernel.org/stable/c/f91fb47ecacc178a83a77eeebd25cbaec18c01d6
Assigning CNA
kernel.org
Date Record Created
20240821	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240821)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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