CVE-2024-39502

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2024-07-12. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

ionic: fix use after netif_napi_del()

When queues are started, netif_napi_add() and napi_enable() are called. If there are 4 queues and only 3 queues are used for the current configuration, only 3 queues' napi should be registered and enabled. The ionic_qcq_enable() checks whether the .poll pointer is not NULL for enabling only the using queue' napi. Unused queues' napi will not be registered by netif_napi_add(), so the .poll pointer indicates NULL. But it couldn't distinguish whether the napi was unregistered or not because netif_napi_del() doesn't reset the .poll pointer to NULL. So, ionic_qcq_enable() calls napi_enable() for the queue, which was unregistered by netif_napi_del().

Reproducer: ethtool -L rx 1 tx 1 combined 0 ethtool -L rx 0 tx 0 combined 1 ethtool -L rx 0 tx 0 combined 4

Splat looks like: kernel BUG at net/core/dev.c:6666! Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 3 PID: 1057 Comm: kworker/3:3 Not tainted 6.10.0-rc2+ #16 Workqueue: events ionic_lif_deferred_work [ionic] RIP: 0010:napi_enable+0x3b/0x40 Code: 48 89 c2 48 83 e2 f6 80 b9 61 09 00 00 00 74 0d 48 83 bf 60 01 00 00 00 74 03 80 ce 01 f0 4f RSP: 0018:ffffb6ed83227d48 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff97560cda0828 RCX: 0000000000000029 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff97560cda0a28 RBP: ffffb6ed83227d50 R08: 0000000000000400 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: ffff97560ce3c1a0 R14: 0000000000000000 R15: ffff975613ba0a20 FS: 0000000000000000(0000) GS:ffff975d5f780000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8f734ee200 CR3: 0000000103e50000 CR4: 00000000007506f0 PKRU: 55555554 Call Trace: ? die+0x33/0x90 ? do_trap+0xd9/0x100 ? napi_enable+0x3b/0x40 ? do_error_trap+0x83/0xb0 ? napi_enable+0x3b/0x40 ? napi_enable+0x3b/0x40 ? exc_invalid_op+0x4e/0x70 ? napi_enable+0x3b/0x40 ? asm_exc_invalid_op+0x16/0x20 ? napi_enable+0x3b/0x40 ionic_qcq_enable+0xb7/0x180 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8] ionic_start_queues+0xc4/0x290 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8] ionic_link_status_check+0x11c/0x170 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8] ionic_lif_deferred_work+0x129/0x280 [ionic 59bdfc8a035436e1c4224ff7d10789e3f14643f8] process_one_work+0x145/0x360 worker_thread+0x2bb/0x3d0 ? __pfx_worker_thread+0x10/0x10 kthread+0xcc/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2d/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
22.7%
KEV
Not listed

Published

July 12, 2024

Last Modified

May 12, 2026

References (18)

Vendor Advisories for CVE-2024-39502(7)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1035.39) @ jammy2026-05-22ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1072.70) @ jammy2026-05-22ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1067.73~20.04.1) @ focal2026-05-22ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (5.15.0.121.110) @ jammy2026-05-22ubuntu
ubuntulinux-tools-raspi (6.8.0-1011.12) @ noble2026-05-22ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-45.45~22.04.1) @ jammy2026-05-22ubuntu
ubuntulinux-tools-azure-fde-edge (5.15.0.1072.81~20.04.1.49) @ focal2026-05-22ubuntu
ubuntulinux-tools-raspi2-hwe-18.04-edge (5.4.0.1116.146) @ focal2026-05-22ubuntu
ubuntulinux-tools-raspi-hwe-18.04-edge (5.4.0.1116.128~18.04.1) @ bionic2026-05-22ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.8.0-44.44) @ noble2026-05-22ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.195.193) @ focal2026-05-22ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.195.215~18.04.1) @ bionic2026-05-22ubuntu
ubuntulinux-tools-azure (6.8.0-1014.16) @ noble2026-05-22ubuntu
ubuntulinux-tools-iot (5.4.0.1043.41) @ focal2026-05-22ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1051 (5.4.0-1051.55) @ focal2026-05-22ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.8.0-1013.14~22.04.1) @ jammy2026-05-22ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.121.121) @ jammy2026-05-22ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k (6.8.0-1013.14.1) @ noble2026-05-22ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-44.44.1~22.04.1) @ jammy2026-05-22ubuntu
redhatkernel-0:5.14.0-427.40.1.el9_42024-10-16redhat
redhatkernel-rt-0:5.14.0-284.82.1.rt14.367.el9_22024-09-04redhat
redhatkernel-0:5.14.0-284.82.1.el9_22024-09-04redhat
redhatkernel-0:4.18.0-477.70.1.el8_82024-09-03redhat
redhatkernel-0:5.14.0-70.112.1.el9_02024-08-13redhat
redhatkernel-0:4.18.0-305.138.1.el8_42024-08-13redhat
redhatkernel-rt-0:5.14.0-70.112.1.rt21.184.el9_02024-08-13redhat
redhatkernel-rt-0:4.18.0-305.138.1.rt7.214.el8_42024-08-13redhat
redhatkernel-0:4.18.0-372.118.1.el8_62024-08-13redhat
redhatkernel-0:4.18.0-553.16.1.el8_102024-08-08redhat
redhatkernel-rt-0:4.18.0-553.16.1.rt7.357.el8_102024-08-08redhat
linuxKernel @ 5.4.279—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(18)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 118 total refreshes for this CVE.

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Frequently asked(5)

What is CVE-2024-39502?
CVE-2024-39502 is a high vulnerability published on July 12, 2024. In the Linux kernel, the following vulnerability has been resolved: ionic: fix use after netifnapidel() When queues are started, netifnapiadd() and napi_enable() are called. If there are 4 queues and only 3 queues are used for the current configuration, only 3 queues' napi should be registered and…
When was CVE-2024-39502 disclosed?
CVE-2024-39502 was first published in the National Vulnerability Database on July 12, 2024, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-39502 actively exploited?
CVE-2024-39502 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-39502?
CVE-2024-39502 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2024-39502?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-39502, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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