CVE-2026-23019

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-01-31. 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
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

A fix is available — apply it.

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

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure

devlink_alloc() may return NULL on allocation failure, but prestera_devlink_alloc() unconditionally calls devlink_priv() on the returned pointer.

This leads to a NULL pointer dereference if devlink allocation fails. Add a check for a NULL devlink pointer and return NULL early to avoid the crash.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
1.8%
KEV
Not listed

Published

January 31, 2026

Last Modified

July 14, 2026

Advisory Details (7)

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

SSA-019113

https://cert-portal.siemens.com/productcert/html/ssa-019113.html
generic

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a428e0da1248c353557970848994f35fd3f005e2
generic

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/94e070cd50790317fba7787ae6006934b7edcb6f
generic

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8a4333b2818f0d853b43e139936c20659366e4a0
generic

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3950054c9512add0cc79ab7e72b6d2f9f675e25b
generic

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/326a4b7e61d01db3507f71c8bb5e85362f607064
generic

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/325aea74be7e192b5c947c782da23b0d19a5fda2

Vendor Advisories for CVE-2026-23019(1)

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

Patch Availability(18)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1103.93) @ jammy2026-06-07ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1094.98) @ jammy2026-06-07ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1102.106) @ jammy2026-06-07ubuntu
ubuntulinux-tools-nvidia-tegra-igx-rt-5.15 (5.15.0.1044.46) @ jammy2026-06-07ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1067 (5.15.0-1067.71) @ jammy2026-06-07ubuntu
ubuntulinux-tools-gke-5.15 (5.15.0.1099.98) @ jammy2026-06-07ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1110.119~20.04.1) @ focal2026-06-07ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1109.107) @ jammy2026-06-07ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1109.94) @ jammy2026-06-07ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1097.95) @ jammy2026-06-07ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1051.52~22.04.1) @ jammy2026-06-07ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1054.57.1) @ noble2026-06-07ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-116.116+fips1) @ noble2026-06-07ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1024.24) @ noble2026-06-07ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.8.0-1054.57~22.04.1) @ jammy2026-06-07ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1056.62) @ noble2026-06-07ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1059.65+fips1) @ noble2026-06-07ubuntu
linuxKernel @ 5.15.198—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.

All Vendor Advisories

(17)

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 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.

  1. 2026-07-16 17:03 UTCEPSS rescore
  2. 2026-07-16 17:03 UTCEPSS rescore
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 16:57 UTCEPSS rescore
  5. 2026-07-15 02:00 UTCEPSS rescore
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-14 13:19 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  8. 2026-07-14 13:11 UTCMITRE cvelistV5
  9. 2026-07-13 22:30 UTCEPSS rescore
  10. 2026-07-13 10:37 UTCOSV refresh
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-12 05:46 UTCEPSS rescore
  13. 2026-07-11 08:27 UTCEPSS rescore
  14. 2026-07-09 19:10 UTCEPSS rescore
  15. 2026-07-08 15:15 UTCEPSS rescore
  16. 2026-07-08 15:15 UTCEPSS rescore
  17. 2026-07-07 13:46 UTCEPSS rescore
  18. 2026-07-06 16:27 UTCEPSS rescore
  19. 2026-07-06 16:27 UTCEPSS rescore
  20. 2026-07-06 02:23 UTCEPSS rescore
  21. 2026-07-06 02:23 UTCEPSS rescore
  22. 2026-07-05 02:30 UTCEPSS rescore
  23. 2026-07-01 15:06 UTCEPSS rescore
  24. 2026-07-01 15:06 UTCEPSS rescore
  25. 2026-06-30 23:22 UTCEPSS rescore
Show 62 more
  1. 2026-06-30 23:22 UTCEPSS rescore
  2. 2026-06-29 14:06 UTCEPSS rescore
  3. 2026-06-28 14:07 UTCEPSS rescore
  4. 2026-06-28 14:07 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-28 04:56 UTCEPSS rescore
  7. 2026-06-27 03:08 UTCEPSS rescore
  8. 2026-06-25 13:49 UTCEPSS rescore
  9. 2026-06-25 13:49 UTCEPSS rescore
  10. 2026-06-25 03:01 UTCOSV refresh
  11. 2026-06-24 14:05 UTCEPSS rescore
  12. 2026-06-24 14:05 UTCEPSS rescore
  13. 2026-06-23 21:33 UTCEPSS rescore
  14. 2026-06-23 21:32 UTCEPSS rescore
  15. 2026-06-22 14:25 UTCEPSS rescore
  16. 2026-06-22 14:25 UTCEPSS rescore
  17. 2026-06-21 14:56 UTCEPSS rescore
  18. 2026-06-21 14:56 UTCEPSS rescore
  19. 2026-06-21 01:59 UTCEPSS rescore
  20. 2026-06-21 01:59 UTCEPSS rescore
  21. 2026-06-19 19:25 UTCEPSS rescore
  22. 2026-06-19 19:25 UTCEPSS rescore
  23. 2026-06-18 17:52 UTCEPSS rescore
  24. 2026-06-17 17:53 UTCEPSS rescore
  25. 2026-06-15 17:48 UTCEPSS rescore
  26. 2026-06-14 23:18 UTCEPSS rescore
  27. 2026-06-13 23:00 UTCEPSS rescore
  28. 2026-06-13 23:00 UTCEPSS rescore
  29. 2026-06-12 23:12 UTCEPSS rescore
  30. 2026-06-11 14:00 UTCEPSS rescore
  31. 2026-06-10 22:18 UTCEPSS rescore
  32. 2026-06-10 13:22 UTCEPSS rescore
  33. 2026-06-08 14:17 UTCEPSS rescore
  34. 2026-06-08 14:17 UTCEPSS rescore
  35. 2026-06-07 23:11 UTCVendor advisory
  36. 2026-06-07 23:11 UTCGHSA enrichment
  37. 2026-06-07 15:25 UTCEPSS rescore
  38. 2026-06-07 15:24 UTCEPSS rescore
  39. 2026-06-06 13:47 UTCEPSS rescore
  40. 2026-06-06 13:47 UTCEPSS rescore
  41. 2026-06-06 13:47 UTCEPSS rescore
  42. 2026-06-05 22:47 UTCEPSS rescore
  43. 2026-06-05 06:10 UTCEPSS rescore
  44. 2026-06-05 06:10 UTCEPSS rescore
  45. 2026-06-04 13:12 UTCEPSS rescore
  46. 2026-06-04 13:12 UTCEPSS rescore
  47. 2026-06-04 13:12 UTCEPSS rescore
  48. 2026-06-02 20:13 UTCEPSS rescore
  49. 2026-06-02 20:13 UTCEPSS rescore
  50. 2026-06-01 13:51 UTCEPSS rescore
  51. 2026-06-01 13:51 UTCEPSS rescore
  52. 2026-06-01 13:51 UTCEPSS rescore
  53. 2026-05-31 22:30 UTCEPSS rescore
  54. 2026-05-31 22:30 UTCEPSS rescore
  55. 2026-05-31 00:16 UTCEPSS rescore
  56. 2026-05-31 00:16 UTCEPSS rescore
  57. 2026-05-31 00:16 UTCEPSS rescore
  58. 2026-05-29 14:56 UTCEG score recompute
  59. 2026-05-29 14:56 UTCVendor advisory
  60. 2026-05-29 14:56 UTCGHSA enrichment
  61. 2026-05-29 13:44 UTCEPSS rescore
  62. 2026-05-29 13:44 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-23019?
CVE-2026-23019 is a medium vulnerability published on January 31, 2026. In the Linux kernel, the following vulnerability has been resolved: net: marvell: prestera: fix NULL dereference on devlink_alloc() failure devlink_alloc() may return NULL on allocation failure, but presteradevlinkalloc() unconditionally calls devlink_priv() on the returned pointer. This leads to a…
When was CVE-2026-23019 disclosed?
CVE-2026-23019 was first published in the National Vulnerability Database on January 31, 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-2026-23019 actively exploited?
CVE-2026-23019 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-23019?
CVE-2026-23019 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-23019?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23019, 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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