CVE-2024-46800

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2024-09-18. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

sch/netem: fix use after free in netem_dequeue

If netem_dequeue() enqueues packet to inner qdisc and that qdisc returns __NET_XMIT_STOLEN. The packet is dropped but qdisc_tree_reduce_backlog() is not called to update the parent's q.qlen, leading to the similar use-after-free as Commit e04991a48dbaf382 ("netem: fix return value if duplicate enqueue fails")

Commands to trigger KASAN UaF:

ip link add type dummy ip link set lo up ip link set dummy0 up tc qdisc add dev lo parent root handle 1: drr tc filter add dev lo parent 1: basic classid 1:1 tc class add dev lo classid 1:1 drr tc qdisc add dev lo parent 1:1 handle 2: netem tc qdisc add dev lo parent 2: handle 3: drr tc filter add dev lo parent 3: basic classid 3:1 action mirred egress redirect dev dummy0 tc class add dev lo classid 3:1 drr ping -c1 -W0.01 localhost # Trigger bug tc class del dev lo classid 1:1 tc class add dev lo classid 1:1 drr ping -c1 -W0.01 localhost # UaF

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 PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

September 18, 2024

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

sch/netem: fix use after free in netem_dequeue - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3b3a2a9c6349e25a025d2330f479bc33a6ccb54a
generic

sch/netem: fix use after free in netem_dequeue - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/32008ab989ddcff1a485fa2b4906234c25dc5cd6
generic

sch/netem: fix use after free in netem_dequeue - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dde33a9d0b80aae0c69594d1f462515d7ff1cb3d
generic

sch/netem: fix use after free in netem_dequeue - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/db2c235682913a63054e741fe4e19645fdf2d68e
generic

sch/netem: fix use after free in netem_dequeue - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/14f91ab8d391f249b845916820a56f42cf747241
generic

sch/netem: fix use after free in netem_dequeue - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/98c75d76187944296068d685dfd8a1e9fd8c4fdc
generic

sch/netem: fix use after free in netem_dequeue - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/295ad5afd9efc5f67b86c64fce28fb94e26dc4c9
generic

sch/netem: fix use after free in netem_dequeue - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f0bddb4de043399f16d1969dad5ee5b984a64e7b

Vendor Advisories for CVE-2024-46800(2)

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

Patch Availability(21)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.200.196) @ focal2026-05-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1054 (5.4.0-1054.58) @ focal2026-05-23ubuntu
ubuntulinux-tools-bluefield (5.4.0.1094.90) @ focal2026-05-23ubuntu
ubuntulinux-tools-oracle-edge (5.4.0.1134.143~18.04.1) @ bionic2026-05-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1038.42) @ jammy2026-05-23ubuntu
ubuntulinux-tools-aws-lts-22.04 (5.15.0.1072.72) @ jammy2026-05-23ubuntu
ubuntulinux-virtual-hwe-16.04-edge (4.15.0.231.243~16.04.1) @ xenial2026-05-23ubuntu
ubuntulinux-tools-raspi2-hwe-18.04-edge (5.4.0.1119.149) @ focal2026-05-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-49.49~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-tools-iot (5.4.0.1044.42) @ focal2026-05-23ubuntu
ubuntulinux-tools-azure (6.8.0-1018.21) @ noble2026-05-23ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1075.73) @ jammy2026-05-23ubuntu
ubuntulinux-tools-azure (4.15.0.1183.198~14.04.1) @ trusty2026-05-23ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-49.49.1~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-tools-oracle (4.15.0.1137.148~16.04.1) @ xenial2026-05-23ubuntu
ubuntulinux-tools-intel-iotg (5.15.0.1067.67) @ jammy2026-05-23ubuntu
ubuntulinux-virtual-lts-xenial (4.4.0.261.267) @ xenial2026-05-23ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1078.87~20.04.1) @ focal2026-05-23ubuntu
ubuntulinux-tools-gkeop-6.8 (6.8.0-1002.4) @ noble2026-05-23ubuntu
redhatkernel-0:5.14.0-570.12.1.el9_62025-05-13redhat
linuxKernel @ 4.19.322—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

(19)

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 13× in last 7d / 48× 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 126 total refreshes for this CVE.

  1. 2026-08-07 16:25 UTCEPSS rescore
  2. 2026-08-06 13:45 UTCEPSS rescore
  3. 2026-08-05 19:16 UTCEPSS rescore
  4. 2026-08-05 12:00 UTCEG score recompute
  5. 2026-08-05 12:00 UTCVendor advisory
  6. 2026-08-05 11:59 UTCGHSA enrichment
  7. 2026-08-04 15:08 UTCEPSS rescore
  8. 2026-08-04 11:48 UTCEG score recompute
  9. 2026-08-04 11:48 UTCVendor advisory
  10. 2026-08-04 11:48 UTCGHSA enrichment
  11. 2026-08-04 10:36 UTCEPSS rescore
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  15. 2026-07-31 18:12 UTCOSV refresh
  16. 2026-07-30 16:26 UTCEPSS rescore
  17. 2026-07-30 01:29 UTCEPSS rescore
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  25. 2026-07-23 02:41 UTCEG score recompute
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  1. 2026-07-22 14:07 UTCEPSS rescore
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  14. 2026-07-15 01:59 UTCEPSS rescore
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  16. 2026-07-14 01:00 UTCOSV refresh
  17. 2026-07-13 22:29 UTCEPSS rescore
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  24. 2026-07-08 15:14 UTCEPSS rescore
  25. 2026-07-07 13:45 UTCEPSS rescore
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  40. 2026-06-25 22:46 UTCOSV refresh
  41. 2026-06-25 13:49 UTCEPSS rescore
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  44. 2026-06-23 21:32 UTCEPSS rescore
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  70. 2026-06-08 12:09 UTCOSV refresh
  71. 2026-06-07 15:24 UTCEPSS rescore
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  73. 2026-06-06 13:46 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2024-46800?
CVE-2024-46800 is a high vulnerability published on September 18, 2024. In the Linux kernel, the following vulnerability has been resolved: sch/netem: fix use after free in netem_dequeue If netem_dequeue() enqueues packet to inner qdisc and that qdisc returns NETXMITSTOLEN. The packet is dropped but qdisctreereduce_backlog() is not called to update the parent's q.qlen,…
When was CVE-2024-46800 disclosed?
CVE-2024-46800 was first published in the National Vulnerability Database on September 18, 2024, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-46800 actively exploited?
CVE-2024-46800 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 81.3% of all scored CVEs.
What is the CVSS score of CVE-2024-46800?
CVE-2024-46800 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2024-46800?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-46800, 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.

Dependency Blast Radius

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