CVE-2025-37786: net: dsa: free routing table on probe failure
CSIRTS triage
- What
- Network DSA routing table is not freed on probe failure, causing memory leak and potential kernel instability.
- Who is affected
- Systems using the Linux Distributed Switch Architecture driver experiencing probe failures.
- Urgency
- High priority; memory leak during probe failure can degrade system stability over time.
- Action
- Update Linux kernel to include proper cleanup of DSA routing tables on probe failure.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-37786
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2025-377860.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-37786 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownUbuntu Linux Kernel Multiple Vulnerabilitieshkcert
- unknownUSN-8620-4: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
- unknownUSN-8620-3: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
- unknownMultiple vulnerabilities in Ubuntu Linux kernel (July 31, 2026)cert-fr-avis
- unknownUSN-8620-2: Linux kernel (Azure FIPS) vulnerabilitiesubuntu
- highUSN-8620-1: Linux kernel vulnerabilitiesubuntu
- highUSN-8610-1: Linux kernel (Azure CVM) vulnerabilitiesubuntu
- highUSN-8575-3: Linux kernel vulnerabilitiesubuntu
- highUSN-8576-2: Linux kernel (NVIDIA Tegra) vulnerabilitiesubuntu
- highUSN-8575-2: Linux kernel vulnerabilitiesubuntu
- highUSN-8576-1: Linux kernel (NVIDIA Tegra) vulnerabilitiesubuntu
- highUSN-8575-1: Linux kernel vulnerabilitiesubuntu
Recent advisories for net
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- medium[UPDATE] [medium] Golang Go-Module (Net, Image, Crypto): Multiple Vulnerabilitiescert-bund · 2026-08-07
- highCVE-2026-64587: In the Linux kernel, the following vulnerability has been resolved: net: ethernet: arc: emac: …nvd · 2026-08-06
- mediumCVE-2024-35971: net: ks8851: Handle softirqs at the end of IRQ thread to fix hangmsrc · 2026-08-06
- mediumCVE-2025-39770: net: gso: Forbid IPv6 TSO with extensions on devices with only IPV6_CSUMmsrc · 2026-08-06
- mediumCVE-2024-57843: virtio-net: fix overflow inside virtnet_rq_allocmsrc · 2026-08-06
- highCVE-2025-40170: net: use dst_dev_rcu() in sk_setup_caps()msrc · 2026-08-06
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