CVE-2025-23155

Advisory lineage Upstream: 0 Downstream: 34
Analyzed
Published: 01 May 2025, 12:55
Last modified:11 May 2026, 21:14

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.11% LOW
0% probability +0.07%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

01 May 2025, 12:55
Published
Vulnerability first disclosed
11 May 2026, 21:14
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Fix accessing freed irq affinity_hint In stmmac_request_irq_multi_msi(), a pointer to the stack variable cpu_mask is passed to irq_set_affinity_hint(). This value is stored in irq_desc->affinity_hint, but once stmmac_request_irq_multi_msi() returns, the pointer becomes dangling. The affinity_hint is exposed via procfs with S_IRUGO permissions, allowing any unprivileged process to read it. Accessing this stale pointer can lead to: - a kernel oops or panic if the referenced memory has been released and unmapped, or - leakage of kernel data into userspace if the memory is re-used for other purposes. All platforms that use stmmac with PCI MSI (Intel, Loongson, etc) are affected.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.11%• Percentile: 28%

Affected Systems

  • linux•linux

    ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < 2fbf67ddb8a0d0efc00d2df496a9843ec318d48b | ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < 960dab23f6d405740c537d095f90a4ee9ddd9285 | ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < 442312c2a90d60c7a5197246583fa91d9e579985 | ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < e148266e104fce396ad624079a6812ac3a9982ef | ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < 9e51a6a44e2c4de780a26e8fe110d708e806a8cd | ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < c60d101a226f18e9a8f01bb4c6ca2b47dfcb15ef | 5.13

  • linux•linux_kernel

    ≥ 5.13, < 6.12.36 | ≥ 6.13, < 6.13.12 | ≥ 6.14, < 6.14.3

References (6)