CVE-2026-23242

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-03-18. the CNA's CVSS baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

RDMA/siw: Fix potential NULL pointer dereference in header processing

If siw_get_hdr() returns -EINVAL before set_rx_fpdu_context(), qp->rx_fpdu can be NULL. The error path in siw_tcp_rx_data() dereferences qp->rx_fpdu->more_ddp_segs without checking, which may lead to a NULL pointer deref. Only check more_ddp_segs when rx_fpdu is present.

KASAN splat: [ 101.384271] KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7] [ 101.385869] RIP: 0010:siw_tcp_rx_data+0x13ad/0x1e50

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

March 18, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jun 10, 2026
No patch confirmed yet.
generic

RDMA/siw: Fix potential NULL pointer dereference in header processing - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ffba40b67663567481fa8a1ed5d2da36897c175d
generic

RDMA/siw: Fix potential NULL pointer dereference in header processing - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ce025f7f5d070596194315eb2e4e89d568b8a755
generic

RDMA/siw: Fix potential NULL pointer dereference in header processing - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ab957056192d6bd068b3759cb2077d859cca01f0
generic

RDMA/siw: Fix potential NULL pointer dereference in header processing - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ab61841633d10e56a58c1493a262f0d02dba2f5e
generic

RDMA/siw: Fix potential NULL pointer dereference in header processing - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/87b7a036d2c73d5bb3ae2d47dee23de465db3355
generic

RDMA/siw: Fix potential NULL pointer dereference in header processing - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8564dcc12fbb372d984ab45768cae9335777b274
generic

RDMA/siw: Fix potential NULL pointer dereference in header processing - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/714c99e1dc8f85f446e05be02ba83972e981a817
generic

RDMA/siw: Fix potential NULL pointer dereference in header processing - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/14ab3da122bd18920ad57428f6cf4fade8385142

Vendor Advisories for CVE-2026-23242(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 5.10.252—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 (53 versions)5.10.257-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.164-1~deb11u1 (16 versions)6.1.170-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
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 ... 6.18~rc7-1~exp1 (100 versions)6.18.14-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(23)

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 7× in last 7d / 60× 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 220 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-23242?
CVE-2026-23242 is a high vulnerability published on March 18, 2026. In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix potential NULL pointer dereference in header processing If siwgethdr() returns -EINVAL before setrxfpdu_context(), qp->rxfpdu can be NULL. The error path in siwtcprxdata() dereferences qp->rxfpdu->moreddp_segs without…
When was CVE-2026-23242 disclosed?
CVE-2026-23242 was first published in the National Vulnerability Database on March 18, 2026, 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-2026-23242 actively exploited?
CVE-2026-23242 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 62.4% of all scored CVEs.
What is the CVSS score of CVE-2026-23242?
CVE-2026-23242 has a CVSS v4.0 base score of 7.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-23242?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23242, 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-2026-23242

Explore →

Is Your Infrastructure Affected by CVE-2026-23242?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs