Bug 2406743 (CVE-2025-40081) - CVE-2025-40081 kernel: perf: arm_spe: Prevent overflow in PERF_IDX2OFF()
Summary: CVE-2025-40081 kernel: perf: arm_spe: Prevent overflow in PERF_IDX2OFF()
Keywords:
Status: NEW
Alias: CVE-2025-40081
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-28 12:03 UTC by OSIDB Bzimport
Modified: 2025-10-28 18:59 UTC (History)
0 users

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Description OSIDB Bzimport 2025-10-28 12:03:04 UTC 
In the Linux kernel, the following vulnerability has been resolved:

perf: arm_spe: Prevent overflow in PERF_IDX2OFF()

Cast nr_pages to unsigned long to avoid overflow when handling large
AUX buffer sizes (>= 2 GiB).
Comment 1 Jon Moroney 2025-10-28 18:57:06 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102820-CVE-2025-40081-c552@gregkh/T
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