CVE-2026-53013

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
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:

macvlan: fix macvlan_get_size() not reserving space for IFLA_MACVLAN_BC_CUTOFF

macvlan_get_size() does not account for IFLA_MACVLAN_BC_CUTOFF, but macvlan_fill_info() conditionally includes it when port->bc_cutoff != 1. This causes nla_put_s32() to fail with -EMSGSIZE when the netlink skb runs out of space, triggering a WARN_ON in rtnetlink and preventing the interface from being dumped.

The bug can be reproduced with:

ip link add macvlan0 link eth0 type macvlan mode bridge ip link set macvlan0 type macvlan bc_cutoff 0 ip -d link show macvlan0 # fails with -EMSGSIZE

The bc_cutoff feature was added in commit 954d1fa1ac93 ("macvlan: Add netlink attribute for broadcast cutoff"), which added the nla_put_s32() call in macvlan_fill_info() but missed adding the corresponding nla_total_size(4) in macvlan_get_size(). A follow-up commit 55cef78c244d ("macvlan: add forgotten nla_policy for IFLA_MACVLAN_BC_CUTOFF") fixed the missing nla_policy entry but still did not fix the size calculation.

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
2%
KEV
Not listed

Published

June 24, 2026

Last Modified

July 14, 2026

Advisory Details (5)

Auto-updated Jul 16, 2026
No patch confirmed yet.
generic

macvlan: fix macvlan_get_size() not reserving space for IFLA_MACVLAN_BC_CUTOFF - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fa92a77b0ed4d5f11a71665a232ac5a54a4b055d
generic

macvlan: fix macvlan_get_size() not reserving space for IFLA_MACVLAN_BC_CUTOFF - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b6b7154e9f5d75b608ceb2d05b376de8c638c40e
generic

macvlan: fix macvlan_get_size() not reserving space for IFLA_MACVLAN_BC_CUTOFF - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/77ecfa4e27f282d224215895ddfbeb916fc75e24
generic

macvlan: fix macvlan_get_size() not reserving space for IFLA_MACVLAN_BC_CUTOFF - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4979252758387b338ca968ba7e0515b0ae2257e3
generic

macvlan: fix macvlan_get_size() not reserving space for IFLA_MACVLAN_BC_CUTOFF - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1c004f14ccdc11585625c168bb9a7c5e1b8afb0c

Vendor Advisories for CVE-2026-53013(2)

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

Patch Availability(22)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-30ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-30ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-30ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-tools-aws-edge (6.8.0-1061.64~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-30ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-30ubuntu

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

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (140 versions)7.0.10-1—

Additional Vendor Advisories

(22)

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 5× in last 7d / 65× 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 190 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53013?
CVE-2026-53013 is a medium vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: macvlan: fix macvlangetsize() not reserving space for IFLAMACVLANBC_CUTOFF macvlangetsize() does not account for IFLAMACVLANBC_CUTOFF, but macvlanfillinfo() conditionally includes it when port->bc_cutoff != 1. This causes…
When was CVE-2026-53013 disclosed?
CVE-2026-53013 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53013 actively exploited?
CVE-2026-53013 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 97.8% of all scored CVEs.
What is the CVSS score of CVE-2026-53013?
CVE-2026-53013 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-53013?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53013, 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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