CVE-2026-23442

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-04-03. 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:

ipv6: add NULL checks for idev in SRv6 paths

__in6_dev_get() can return NULL when the device has no IPv6 configuration (e.g. MTU < IPV6_MIN_MTU or after NETDEV_UNREGISTER).

Add NULL checks for idev returned by __in6_dev_get() in both seg6_hmac_validate_skb() and ipv6_srh_rcv() to prevent potential NULL pointer dereferences.

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

April 3, 2026

Last Modified

July 24, 2026

Advisory Details (8)

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

ipv6: add NULL checks for idev in SRv6 paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d1bd8b9edc6752d10f84d28ff64f842401ce336d
generic

ipv6: add NULL checks for idev in SRv6 paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c5cedee5d97382176573bbe21e1724e737a5eb64
generic

ipv6: add NULL checks for idev in SRv6 paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bc9843c39f9932a8b36efd1d362ea00bb88e4e78
generic

ipv6: add NULL checks for idev in SRv6 paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a25853c9feea7bbf31d157ff6e004d2d3b4f7f13
generic

ipv6: add NULL checks for idev in SRv6 paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/83d705d35e583cb1b1eacf196dfe7b77d442018e
generic

ipv6: add NULL checks for idev in SRv6 paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/50352fc103928e10e8729abc79a0d05abef26c4d
generic

ipv6: add NULL checks for idev in SRv6 paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/06413793526251870e20402c39930804f14d59c0
generic

ipv6: add NULL checks for idev in SRv6 paths - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4

Vendor Advisories for CVE-2026-23442(3)

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-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-07-26ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-07-26ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-07-26ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-07-26ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-07-26ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-07-26ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-07-26ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-07-26ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-07-26ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-07-26ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-07-26ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-07-26ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-07-26ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-07-26ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-07-26ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-07-26ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-07-26ubuntu
linuxKernel @ 5.10.258—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.

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (122 versions)6.19.10-1—

Weakness Classification(1)

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

All Vendor Advisories

(24)

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 5× in last 7d / 25× 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 209 total refreshes for this CVE.

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

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

Frequently asked(5)

What is CVE-2026-23442?
CVE-2026-23442 is a medium vulnerability published on April 3, 2026. In the Linux kernel, the following vulnerability has been resolved: ipv6: add NULL checks for idev in SRv6 paths in6devget() can return NULL when the device has no IPv6 configuration (e.g. MTU < IPV6MINMTU or after NETDEV_UNREGISTER). Add NULL checks for idev returned by in6devget() in both…
When was CVE-2026-23442 disclosed?
CVE-2026-23442 was first published in the National Vulnerability Database on April 3, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23442 actively exploited?
CVE-2026-23442 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 97.7% of all scored CVEs.
What is the CVSS score of CVE-2026-23442?
CVE-2026-23442 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-23442?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23442, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-23442

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