CVE-2025-23155 (GCVE-0-2025-23155)

Vulnerability from cvelistv5 – Published: 2025-05-01 12:55 – Updated: 2025-11-24 09:49
VLAI?
Title
net: stmmac: Fix accessing freed irq affinity_hint
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8deec94c6040bb4a767f6e9456a0a44c7f2e713e , < 960dab23f6d405740c537d095f90a4ee9ddd9285 (git)
Affected: 8deec94c6040bb4a767f6e9456a0a44c7f2e713e , < 442312c2a90d60c7a5197246583fa91d9e579985 (git)
Affected: 8deec94c6040bb4a767f6e9456a0a44c7f2e713e , < e148266e104fce396ad624079a6812ac3a9982ef (git)
Affected: 8deec94c6040bb4a767f6e9456a0a44c7f2e713e , < 9e51a6a44e2c4de780a26e8fe110d708e806a8cd (git)
Affected: 8deec94c6040bb4a767f6e9456a0a44c7f2e713e , < c60d101a226f18e9a8f01bb4c6ca2b47dfcb15ef (git)
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    Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.36 , ≤ 6.12.* (semver)
Unaffected: 6.13.12 , ≤ 6.13.* (semver)
Unaffected: 6.14.3 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"
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        }
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        "dateUpdated": "2025-11-24T09:49:47.670Z",
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    "datePublished": "2025-05-01T12:55:41.607Z",
    "dateReserved": "2025-01-11T14:28:41.514Z",
    "dateUpdated": "2025-11-24T09:49:47.670Z",
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}


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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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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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