7.1

CVE-2025-23155: net: stmmac: Fix accessing freed irq affinity_hint

Modified
AliasesUBUNTU-CVE-2025-23155DEBIAN-CVE-2025-23155
Published 01-05-2025Last modified 05-08-2026

Vulnerability summary

CVE-2025-23155 is a high (CVSS 7.1) vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.1, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 32 · Related 30
DLA-4499-1DSA-6163-1SUSE-SU-2025:02249-1SUSE-SU-2025:02254-1SUSE-SU-2025:02307-1SUSE-SU-2025:02333-1

Timeline

  1. 01-05-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability 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

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.21% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu127 products
  • linuxAll versions (No fix recorded) | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1046.49
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < 2fbf67ddb8a0d0efc00d2df496a9843ec318d48b | ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < 960dab23f6d405740c537d095f90a4ee9ddd9285 | ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < 442312c2a90d60c7a5197246583fa91d9e579985 | ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < e148266e104fce396ad624079a6812ac3a9982ef | ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < 9e51a6a44e2c4de780a26e8fe110d708e806a8cd | ≥ 8deec94c6040bb4a767f6e9456a0a44c7f2e713e, < c60d101a226f18e9a8f01bb4c6ca2b47dfcb15ef | 5.13
  • linux_kernel≥ 5.13, < 6.12.36 | ≥ 6.13, < 6.13.12 | ≥ 6.14, < 6.14.3
Debian1 product
  • linux< 6.1.164-1 | < 6.12.37-1

3 vendors · 130 products

References

30 links
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