CVE-2026-43473

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 5.5 from GitHub Security Advisory published 2026-05-08. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2026-28779 (ENISA EUVD) · GHSA-4rpc-8842-rq53 (GitHub Security Advisories)Source: ENISA EUVD

5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

scsi: mpi3mr: Add NULL checks when resetting request and reply queues

The driver encountered a crash during resource cleanup when the reply and request queues were NULL due to freed memory. This issue occurred when the creation of reply or request queues failed, and the driver freed the memory first, but attempted to mem set the content of the freed memory, leading to a system crash.

Add NULL pointer checks for reply and request queues before accessing the reply/request memory during cleanup

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
25
EG Risk 25/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
Impact severity (EG Severity): CVSS 5.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (5.5): severity, escalated by confirmed exploitation. This CVE's 5.5 is its impact severity (EG Severity), not escalated.

EG Severity
5.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 8, 2026

Last Modified

May 21, 2026

Advisory Details (6)

Auto-updated Jun 16, 2026
Patch available.
Web page

scsi: mpi3mr: Add NULL checks when resetting request and reply queues - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fa96392ebebc8fade2b878acb14cce0f71016503
Web page

scsi: mpi3mr: Add NULL checks when resetting request and reply queues - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e978a36f332ede78eb4de037b517db16265d420d
Web page

scsi: mpi3mr: Add NULL checks when resetting request and reply queues - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7df0296ad4e9253d12c6dbe7f120044dddc95600
Web page

scsi: mpi3mr: Add NULL checks when resetting request and reply queues - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7da755e0d02e9ca035065127e108d1fed8950dc8
Web page

scsi: mpi3mr: Add NULL checks when resetting request and reply queues - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/78d3f201f8b609928eade53cf03a52df5415aaf7
Web page

scsi: mpi3mr: Add NULL checks when resetting request and reply queues - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/220d7ca70611a73d50ef8e9edac630ed1ececb7c

Vendor Advisories for CVE-2026-43473(1)

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

Patch Availability(27)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1056.57~22.04.2) @ jammy2026-08-23ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-23ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-23ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-23ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-23ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-23ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-23ubuntu
linuxKernel @ 6.1.167 (fixes >=5.17.0)—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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)
  • every version up to 6.1.170-1: fixed in 6.1.170-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)
  • every version up to 6.12.85-1: fixed in 6.12.85-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (123 versions)
  • every version up to 6.19.10-1: fixed in 6.19.10-1
—

Weakness Classification(1)

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

All Vendor Advisories

(25)

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 8× in last 7d / 37× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 238 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 138 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  4. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  5. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  6. 2026-10-25 14:28 UTCEG score recompute
  7. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  8. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-10-23 01:40 UTCEG score recompute
  10. 2026-10-23 01:40 UTCGHSA enrichmentGHSA-4rpc-8842-rq53 · GitHub CVSS 5.5
  11. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  16. 2026-10-18 03:40 UTCEG score recompute
  17. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  23. 2026-10-12 16:06 UTCEG score recompute
  24. 2026-10-11 19:48 UTCEG score recompute
  25. 2026-10-11 17:02 UTCEG score recompute
Show 75 more
  1. 2026-10-11 14:28 UTCEG score recompute
  2. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  3. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  4. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  5. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  6. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  7. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  8. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  9. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  10. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  11. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  12. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  13. 2026-09-30 07:58 UTCOSV refresh
  14. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  15. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  16. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  17. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  18. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  19. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  20. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  21. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  22. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  23. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  24. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-09-11 14:23 UTCOSV refresh
  26. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  27. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  28. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  29. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  30. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  31. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  32. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  33. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  34. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  35. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  36. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  37. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  38. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  39. 2026-08-23 19:01 UTCEG score recompute
  40. 2026-08-23 19:01 UTCVendor advisory
  41. 2026-08-23 19:00 UTCGHSA enrichmentGHSA-4rpc-8842-rq53 · GitHub CVSS 5.5
  42. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  43. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  44. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  45. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  46. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  47. 2026-08-17 11:30 UTCEG score recompute
  48. 2026-08-17 11:30 UTCVendor advisory
  49. 2026-08-17 11:30 UTCGHSA enrichmentGHSA-4rpc-8842-rq53 · GitHub CVSS 5.5
  50. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  51. 2026-08-16 04:34 UTCEG score recompute
  52. 2026-08-16 04:34 UTCVendor advisory
  53. 2026-08-16 04:34 UTCGHSA enrichmentGHSA-4rpc-8842-rq53 · GitHub CVSS 5.5
  54. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  55. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  56. 2026-08-15 00:53 UTCVendor advisory
  57. 2026-08-15 00:53 UTCGHSA enrichmentGHSA-4rpc-8842-rq53 · GitHub CVSS 5.5
  58. 2026-08-14 03:07 UTCEG score recompute
  59. 2026-08-14 03:07 UTCVendor advisory
  60. 2026-08-14 03:07 UTCGHSA enrichmentGHSA-4rpc-8842-rq53 · GitHub CVSS 5.5
  61. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  62. 2026-08-12 20:46 UTCEG score recompute
  63. 2026-08-12 20:46 UTCVendor advisory
  64. 2026-08-12 20:46 UTCGHSA enrichmentGHSA-4rpc-8842-rq53 · GitHub CVSS 5.5
  65. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  66. 2026-08-11 23:01 UTCEG score recompute
  67. 2026-08-11 23:01 UTCVendor advisory
  68. 2026-08-11 23:01 UTCGHSA enrichmentGHSA-4rpc-8842-rq53 · GitHub CVSS 5.5
  69. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  70. 2026-08-11 01:16 UTCEG score recompute
  71. 2026-08-11 01:16 UTCVendor advisory
  72. 2026-08-11 01:16 UTCGHSA enrichmentGHSA-4rpc-8842-rq53 · GitHub CVSS 5.5
  73. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  74. 2026-08-10 00:09 UTCEG score recompute
  75. 2026-08-10 00:09 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-43473?
CVE-2026-43473 is a medium-severity vulnerability; its CVE record was published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: scsi: mpi3mr: Add NULL checks when resetting request and reply queues The driver encountered a crash during resource cleanup when the reply and request queues were NULL due to freed memory. This issue occurred when the creation of…
When was the CVE record for CVE-2026-43473 published?
The CVE record for CVE-2026-43473 was published on May 8, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 21, 2026; the record at its source may have been updated since.
Is CVE-2026-43473 actively exploited?
CVE-2026-43473 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-43473?
CVE-2026-43473 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43473?
A fix for CVE-2026-43473 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-43473 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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