CVE-2025-23155

net: stmmac: Fix accessing freed irq affinity_hint

HIGH 7.1

At a glance

Source
NVD
EPSS
EPSS 0.21 % · percentile 11 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

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.

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HLinux
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 8deec94c6040bb4a767f6e9456a0a44c7f2e713e < 2fbf67ddb8a0d0efc00d2df496a9843ec318d48b ; affected 8deec94c6040bb4a767f6e9456a0a44c7f2e713e < 960dab23f6d405740c537d095f90a4ee9ddd9285 ; affected 8deec94c6040bb4a767f6e9456a0a44c7f2e713e < 442312c2a90d60c7a5197246583fa91d9e579985 ; affected 8deec94c6040bb4a767f6e9456a0a44c7f2e713e < e148266e104fce396ad624079a6812ac3a9982ef ; affected 8deec94c6040bb4a767f6e9456a0a44c7f2e713e < 9e51a6a44e2c4de780a26e8fe110d708e806a8cd ; affected 8deec94c6040bb4a767f6e9456a0a44c7f2e713e < c60d101a226f18e9a8f01bb4c6ca2b47dfcb15ef
Linux · Linuxaffected 5.13 ; unaffected 0 < 5.13 ; unaffected 6.1.164 ≤ 6.1.* ; unaffected 6.6.117 ≤ 6.6.* ; unaffected 6.12.36 ≤ 6.12.* ; unaffected 6.13.12 ≤ 6.13.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD