CVE-2024-57843: virtio-net: fix overflow inside virtnet_rq_alloc

mediumCVSS 5.5CVE-2024-57843

CSIRTS triage

vendor: Linux product: Linux Kernel Memory corruption

What: The virtio-net driver contains an integer overflow in the virtnet_rq_alloc function.
Who is affected: Systems running affected Linux kernel versions with virtio-net device driver in use.
Urgency: Medium severity (CVSS 5.5) and not currently exploited; standard patching priority applies.
Action: Apply kernel patch or update to a kernel version containing the fix for CVE-2024-57843.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.5
Published: 2026-08-06
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-57843

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-2024-578430.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2024-57843	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of servicecert-bund

Recent advisories for virtio-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.

highCVE-2026-64552: In the Linux kernel, the following vulnerability has been resolved: virtio-net: fix len check …nvd · 2026-07-27