AZL-69668
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-69668.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-69668
- Upstream
- Published
- 2025-05-01T13:15:51Z
- Modified
- 2026-04-01T05:21:36Z
- Summary
- CVE-2025-23155 affecting package kernel 5.15.200.1-1
- Details
-
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