CVE-2024-49888: bpf: Fix a sdiv overflow issue

mediumCVSS 5.5CVE-2024-49888

CSIRTS triage

vendor: Linux product: Linux Kernel Denial of service

What: BPF verifier does not properly handle signed division overflow, allowing denial of service.
Who is affected: Systems running Linux kernel with BPF unprivileged access enabled.
Urgency: Medium severity (CVSS 5.5) and not yet exploited; standard patching cycle appropriate.
Action: Apply kernel security patch addressing CVE-2024-49888.

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

⚡ Watch Linux Kernel

Get an email when a new Linux Kernel advisory drops — max one per day, one-click unsubscribe.

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-2024-49888

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-2024-498880.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2024-49888	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 bpf

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.

mediumCVE-2024-42151: bpf: mark bpf_dummy_struct_ops.test_1 parameter as nullablemsrc · 2026-08-06
mediumCVE-2024-42067: bpf: Take return from set_memory_rox() into account with bpf_jit_binary_lock_ro()msrc · 2026-08-06
mediumCVE-2023-52920: bpf: support non-r10 register spill/fill to/from stack in precision trackingmsrc · 2026-08-06
highCVE-2026-45932: bpf: Fix tcx/netkit detach permissions when prog fd isn't givenmsrc · 2026-08-06
mediumCVE-2025-37959: bpf: Scrub packet on bpf_redirect_peermsrc · 2026-08-06
highCVE-2026-64508: bpf: Support for hardening against JIT sprayingmsrc · 2026-08-06