CVE-2026-53079

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-24. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

net_sched: fix skb memory leak in deferred qdisc drops

When the network stack cleans up the deferred list via qdisc_run_end(), it operates on the root qdisc. If the root qdisc do not implement the TCQ_F_DEQUEUE_DROPS flag the packets queue to free are never freed and gets stranded on the child's local to_free list.

Fix this by making qdisc_dequeue_drop() aware of the root qdisc. It fetches the root qdisc and check for the TCQ_F_DEQUEUE_DROPS flag. If the flag is present, the packet is appended directly to the root's to_free list. Otherwise, drop it directly as it was done before the optimization was implemented.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

June 24, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Jul 25, 2026
No patch confirmed yet.
generic

net_sched: fix skb memory leak in deferred qdisc drops - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bf26ad92ffda7884825d67b46bd5efe615c3babf
generic

net_sched: fix skb memory leak in deferred qdisc drops - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a6bd339dbb3514bce690fdcf252e788dfab4ee76

Vendor Advisories for CVE-2026-53079(1)

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

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-09-18ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-18ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-09-18ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-18ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-18ubuntu

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.

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (140 versions)7.0.10-1—

Weakness Classification(1)

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

All Vendor Advisories

(9)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× in last 7d / 41× 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 181 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 07:53 UTCEG score recompute
  3. 2026-09-18 07:53 UTCVendor advisory
  4. 2026-09-18 07:52 UTCGHSA enrichment
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-14 01:38 UTCEG score recompute
  8. 2026-09-14 01:38 UTCVendor advisory
  9. 2026-09-14 01:38 UTCGHSA enrichment
  10. 2026-09-13 16:47 UTCEPSS rescore
  11. 2026-09-12 16:13 UTCEG score recompute
  12. 2026-09-12 16:13 UTCVendor advisory
  13. 2026-09-12 16:13 UTCGHSA enrichment
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-08 22:01 UTCEPSS rescore
  16. 2026-09-07 16:01 UTCEPSS rescore
  17. 2026-09-06 13:47 UTCEPSS rescore
  18. 2026-09-04 05:06 UTCEPSS rescore
  19. 2026-09-02 14:12 UTCEPSS rescore
  20. 2026-09-01 04:40 UTCEPSS rescore
  21. 2026-08-30 19:55 UTCEG score recompute
  22. 2026-08-30 19:55 UTCVendor advisory
  23. 2026-08-30 19:55 UTCGHSA enrichment
  24. 2026-08-30 01:22 UTCEPSS rescore
  25. 2026-08-28 21:41 UTCEPSS rescore
Show 75 more
  1. 2026-08-28 03:45 UTCEG score recompute
  2. 2026-08-28 03:45 UTCVendor advisory
  3. 2026-08-28 03:45 UTCGHSA enrichment
  4. 2026-08-27 14:25 UTCEPSS rescore
  5. 2026-08-26 14:46 UTCEPSS rescore
  6. 2026-08-25 13:49 UTCEPSS rescore
  7. 2026-08-24 13:37 UTCEG score recompute
  8. 2026-08-24 13:37 UTCVendor advisory
  9. 2026-08-24 13:37 UTCGHSA enrichment
  10. 2026-08-23 11:48 UTCEG score recompute
  11. 2026-08-23 11:48 UTCVendor advisory
  12. 2026-08-23 11:48 UTCGHSA enrichment
  13. 2026-08-23 00:19 UTCEPSS rescore
  14. 2026-08-22 11:34 UTCEG score recompute
  15. 2026-08-22 11:34 UTCVendor advisory
  16. 2026-08-22 11:34 UTCGHSA enrichment
  17. 2026-08-21 23:49 UTCEPSS rescore
  18. 2026-08-21 07:36 UTCEG score recompute
  19. 2026-08-21 07:36 UTCVendor advisory
  20. 2026-08-21 07:36 UTCGHSA enrichment
  21. 2026-08-20 22:55 UTCEPSS rescore
  22. 2026-08-20 07:22 UTCEG score recompute
  23. 2026-08-20 07:22 UTCVendor advisory
  24. 2026-08-20 07:22 UTCGHSA enrichment
  25. 2026-08-19 17:04 UTCEPSS rescore
  26. 2026-08-19 02:04 UTCEG score recompute
  27. 2026-08-19 02:04 UTCVendor advisory
  28. 2026-08-19 02:04 UTCGHSA enrichment
  29. 2026-08-17 13:47 UTCEPSS rescore
  30. 2026-08-17 11:26 UTCVendor advisory
  31. 2026-08-17 11:26 UTCGHSA enrichment
  32. 2026-08-16 11:12 UTCEG score recompute
  33. 2026-08-16 11:12 UTCVendor advisory
  34. 2026-08-16 11:12 UTCGHSA enrichment
  35. 2026-08-16 02:14 UTCEPSS rescore
  36. 2026-08-15 10:58 UTCEG score recompute
  37. 2026-08-15 10:58 UTCVendor advisory
  38. 2026-08-15 10:58 UTCGHSA enrichment
  39. 2026-08-15 01:30 UTCEPSS rescore
  40. 2026-08-14 10:43 UTCEG score recompute
  41. 2026-08-14 10:43 UTCVendor advisory
  42. 2026-08-14 10:43 UTCGHSA enrichment
  43. 2026-08-13 22:00 UTCEPSS rescore
  44. 2026-08-13 10:29 UTCVendor advisory
  45. 2026-08-13 10:29 UTCGHSA enrichment
  46. 2026-08-12 10:13 UTCEG score recompute
  47. 2026-08-12 10:13 UTCVendor advisory
  48. 2026-08-12 10:13 UTCGHSA enrichment
  49. 2026-08-11 09:58 UTCEG score recompute
  50. 2026-08-11 09:58 UTCVendor advisory
  51. 2026-08-11 09:58 UTCGHSA enrichment
  52. 2026-08-11 00:00 UTCEPSS rescore
  53. 2026-08-10 09:44 UTCEG score recompute
  54. 2026-08-10 09:44 UTCVendor advisory
  55. 2026-08-10 09:44 UTCGHSA enrichment
  56. 2026-08-09 13:46 UTCEPSS rescore
  57. 2026-08-09 09:30 UTCEG score recompute
  58. 2026-08-09 09:30 UTCVendor advisory
  59. 2026-08-09 09:30 UTCGHSA enrichment
  60. 2026-08-08 16:37 UTCEPSS rescore
  61. 2026-08-08 09:16 UTCEG score recompute
  62. 2026-08-08 09:16 UTCVendor advisory
  63. 2026-08-08 09:16 UTCGHSA enrichment
  64. 2026-08-07 09:02 UTCEG score recompute
  65. 2026-08-07 09:02 UTCVendor advisory
  66. 2026-08-07 09:02 UTCGHSA enrichment
  67. 2026-08-06 13:47 UTCEPSS rescore
  68. 2026-08-06 08:48 UTCEG score recompute
  69. 2026-08-06 08:48 UTCVendor advisory
  70. 2026-08-06 08:48 UTCGHSA enrichment
  71. 2026-08-05 19:17 UTCEPSS rescore
  72. 2026-08-05 08:35 UTCEG score recompute
  73. 2026-08-05 08:35 UTCGHSA enrichment
  74. 2026-08-04 15:10 UTCEPSS rescore
  75. 2026-08-04 10:39 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-53079?
CVE-2026-53079 is a medium vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: net_sched: fix skb memory leak in deferred qdisc drops When the network stack cleans up the deferred list via qdiscrunend(), it operates on the root qdisc. If the root qdisc do not implement the TCQFDEQUEUE_DROPS flag the packets…
When was CVE-2026-53079 disclosed?
CVE-2026-53079 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53079 actively exploited?
CVE-2026-53079 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 99.0% of all scored CVEs.
What is the CVSS score of CVE-2026-53079?
CVE-2026-53079 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-53079?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53079, 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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