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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0004.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
8deec94c6040bb4a767f6e9456a0a44c7f2e713e affected < 2fbf67ddb8a0d0efc00d2df496a9843ec318d48b
8deec94c6040bb4a767f6e9456a0a44c7f2e713e affected < 960dab23f6d405740c537d095f90a4ee9ddd9285
8deec94c6040bb4a767f6e9456a0a44c7f2e713e affected < 442312c2a90d60c7a5197246583fa91d9e579985
8deec94c6040bb4a767f6e9456a0a44c7f2e713e affected < e148266e104fce396ad624079a6812ac3a9982ef
8deec94c6040bb4a767f6e9456a0a44c7f2e713e affected < 9e51a6a44e2c4de780a26e8fe110d708e806a8cd
8deec94c6040bb4a767f6e9456a0a44c7f2e713e affected < c60d101a226f18e9a8f01bb4c6ca2b47dfcb15ef
Linux Linux affected
Version Status Constraints
5.13 affected —
0 unaffected < 5.13
6.1.164 unaffected ≤ 6.1.*
6.6.117 unaffected ≤ 6.6.*
6.12.36 unaffected ≤ 6.12.*
6.13.12 unaffected ≤ 6.13.*
6.14.3 unaffected ≤ 6.14.*
6.15 unaffected ≤ *

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

No data.

No data.

Project Subscriptions

Vendors Products
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Linux Kernel Subscribe
Advisories
Source ID Title
EUVD EUVD EUVD-2025-13082 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.
Ubuntu USN Ubuntu USN USN-7594-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7594-2 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-7594-3 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8028-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8028-2 Linux kernel (Real-time) vulnerabilities
Ubuntu USN Ubuntu USN USN-8031-1 Linux kernel (GCP) vulnerabilities
Ubuntu USN Ubuntu USN USN-8028-3 Linux kernel (Real-time) vulnerabilities
Ubuntu USN Ubuntu USN USN-8028-4 Linux kernel (FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8028-5 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8031-2 Linux kernel (GCP FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8028-6 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-8031-3 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8052-1 Linux kernel (Low Latency) vulnerabilities
Ubuntu USN Ubuntu USN USN-8028-7 Linux kernel (Low Latency NVIDIA) vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/2fbf67ddb8a0d0efc00d2df496a9843ec318d48b cve-icon cve-icon
https://git.kernel.org/stable/c/442312c2a90d60c7a5197246583fa91d9e579985 cve-icon cve-icon
https://git.kernel.org/stable/c/960dab23f6d405740c537d095f90a4ee9ddd9285 cve-icon cve-icon
https://git.kernel.org/stable/c/9e51a6a44e2c4de780a26e8fe110d708e806a8cd cve-icon cve-icon
https://git.kernel.org/stable/c/c60d101a226f18e9a8f01bb4c6ca2b47dfcb15ef cve-icon cve-icon
https://git.kernel.org/stable/c/e148266e104fce396ad624079a6812ac3a9982ef cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025050129-CVE-2025-23155-a9c4@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-23155 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-23155 cve-icon
History

Thu, 19 Feb 2026 16:15:00 +0000

Type Values Removed Values Added
References

Mon, 24 Nov 2025 10:00:00 +0000

Type Values Removed Values Added
References

Wed, 05 Nov 2025 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses NVD-CWE-Other
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Mon, 29 Sep 2025 11:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Fix accessing freed irq affinity_hint The cpumask should not be a local variable, since its pointer is saved to irq_desc and may be accessed from procfs. To fix it, use the persistent mask cpumask_of(cpu#). 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.

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00026}

 epss

{'score': 0.00033}

Sun, 06 Jul 2025 09:30:00 +0000

Type Values Removed Values Added
References

Fri, 02 May 2025 14:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Thu, 01 May 2025 13:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Fix accessing freed irq affinity_hint The cpumask should not be a local variable, since its pointer is saved to irq_desc and may be accessed from procfs. To fix it, use the persistent mask cpumask_of(cpu#).
Title net: stmmac: Fix accessing freed irq affinity_hint
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-02-19T15:39:13.612Z

Reserved: 2025-01-11T14:28:41.514Z

Link: CVE-2025-23155

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2025-05-01T13:15:51.413

Modified: 2026-02-19T16:27:09.127

Link: CVE-2025-23155

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-05-01T00:00:00Z

Links: CVE-2025-23155 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses