CVE-2026-31436

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-22. NVD baseline CVSS 9.8; sources differ by 0.0.

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

Also known asEUVD-2026-24760 (ENISA EUVD) · GHSA-j9j9-688w-mvpv (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()

At the end of this function, d is the traversal cursor of flist, but the code completes found instead. This can lead to issues such as NULL pointer dereferences, double completion, or descriptor leaks.

Fix this by completing d instead of found in the final list_for_each_entry_safe() loop.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

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)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
40th
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 (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). 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; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (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)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). 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

April 22, 2026

Last Modified

November 11, 2026

Advisory Details (4)

Auto-updated Nov 7, 2026
Patch available.
Web page

dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e21da2ad8844585040fe4b82be1ad2fe99d40074
Web page

dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e1c9866173c5f8521f2d0768547a01508cb9ff27
Web page

dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/82656e8daf8de00935ae91b91bed43f4d6e0d644
Web page

dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0e4f43779d550e559be13a5cdb763bad92c4cc99

Vendor Advisories for CVE-2026-31436(1)

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 / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.17.0-40.40) @ questing2026-11-11ubuntu
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-11-11ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1058.61.1) @ noble2026-11-11ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-11-11ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-134.134.1) @ noble2026-11-11ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-11-11ubuntu
ubuntulinux-tools-nvidia-hwe-24.04 (6.17.0-1026.26) @ noble2026-11-11ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.17.0-1017.19) @ questing2026-11-11ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-11-11ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-11-11ubuntu
ubuntulinux-virtual-hwe-24.04 (6.17.0-40.40~24.04.1) @ noble2026-11-11ubuntu
ubuntulinux-tools-azure-fde-6.17 (6.17.0-1018.18~24.04.1) @ noble2026-11-11ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-11-11ubuntu
ubuntulinux (7.0.0-1) @ resolute2026-11-11ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-11-11ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-11-11ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-11-11ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1028.28) @ noble2026-11-11ubuntu
ubuntulinux-tools-azure-6.17 (6.17.0-1021.21~24.04.1) @ noble2026-11-11ubuntu
ubuntulinux-tools-raspi-6.17 (6.17.0-1021.21) @ questing2026-11-11ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-11-11ubuntu
linuxKernel @ 6.12.80 (fixes >=6.8.0)—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

(2 across 2 ecosystems)
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 (126 versions)
  • every version up to 6.19.11-1: fixed in 6.19.11-1
—

Weakness Classification(2)

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

All Vendor Advisories

(21)

Data Freshness Timeline

(refreshed 15× in last 7d / 73× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 476 rows 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 376 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:52 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-11-13 01:35 UTCEchelonGraph re-scored
  3. 2026-11-13 01:35 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-11-11 23:29 UTCEchelonGraph re-scored
  6. 2026-11-11 23:29 UTCVendor advisory
  7. 2026-11-11 23:28 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-11-11 16:39 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-11-11 15:40 UTCEchelonGraph re-scored
  10. 2026-11-11 15:40 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-11-10 16:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-11-10 13:34 UTCEchelonGraph re-scored
  13. 2026-11-10 13:34 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-11-09 11:26 UTCEchelonGraph re-scored
  16. 2026-11-09 11:26 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-11-08 09:21 UTCEchelonGraph re-scored
  19. 2026-11-08 09:21 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-11-07 16:38 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-11-07 07:15 UTCEchelonGraph re-scored
  22. 2026-11-07 07:15 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-11-06 16:37 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-11-06 05:25 UTCOSV refresh
  25. 2026-11-06 05:08 UTCEchelonGraph re-scored
Show 75 more
  1. 2026-11-06 05:08 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  2. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  3. 2026-11-05 03:03 UTCEchelonGraph re-scored
  4. 2026-11-05 03:03 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  5. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  6. 2026-11-04 00:57 UTCEchelonGraph re-scored
  7. 2026-11-04 00:57 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-11-03 16:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  9. 2026-11-02 22:52 UTCEchelonGraph re-scored
  10. 2026-11-02 22:52 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-11-01 20:46 UTCEchelonGraph re-scored
  13. 2026-11-01 20:46 UTCVendor advisory
  14. 2026-11-01 20:45 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-10-31 18:40 UTCEchelonGraph re-scored
  17. 2026-10-31 18:40 UTCVendor advisory
  18. 2026-10-31 18:40 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  19. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-10-30 16:34 UTCEchelonGraph re-scored
  21. 2026-10-30 16:34 UTCVendor advisory
  22. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-10-30 16:34 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-10-29 14:28 UTCEchelonGraph re-scored
  26. 2026-10-29 14:28 UTCVendor advisory
  27. 2026-10-29 14:27 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  28. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  29. 2026-10-28 12:21 UTCEchelonGraph re-scored
  30. 2026-10-28 12:21 UTCVendor advisory
  31. 2026-10-28 12:20 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  32. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  33. 2026-10-27 10:14 UTCEchelonGraph re-scored
  34. 2026-10-27 10:14 UTCVendor advisory
  35. 2026-10-27 10:14 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  36. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  37. 2026-10-26 08:07 UTCEchelonGraph re-scored
  38. 2026-10-26 08:07 UTCVendor advisory
  39. 2026-10-26 08:07 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  40. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  41. 2026-10-25 14:36 UTCEchelonGraph re-scored
  42. 2026-10-25 06:02 UTCEchelonGraph re-scored
  43. 2026-10-25 06:02 UTCVendor advisory
  44. 2026-10-25 06:01 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  45. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  46. 2026-10-24 03:55 UTCEchelonGraph re-scored
  47. 2026-10-24 03:55 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  48. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  49. 2026-10-23 01:47 UTCEchelonGraph re-scored
  50. 2026-10-23 01:47 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  51. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  52. 2026-10-21 23:40 UTCEchelonGraph re-scored
  53. 2026-10-21 23:40 UTCVendor advisory
  54. 2026-10-21 23:40 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  55. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  56. 2026-10-20 21:32 UTCEchelonGraph re-scored
  57. 2026-10-20 21:32 UTCVendor advisory
  58. 2026-10-20 21:32 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  59. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  60. 2026-10-19 19:26 UTCVendor advisory
  61. 2026-10-19 19:26 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  62. 2026-10-19 18:48 UTCEchelonGraph re-scored
  63. 2026-10-19 18:48 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  64. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  65. 2026-10-18 19:35 UTCEchelonGraph re-scored
  66. 2026-10-18 19:35 UTCVendor advisory
  67. 2026-10-18 19:35 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  68. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  69. 2026-10-18 03:48 UTCEchelonGraph re-scored
  70. 2026-10-17 17:29 UTCEchelonGraph re-scored
  71. 2026-10-17 17:29 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8
  72. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  73. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  74. 2026-10-16 15:20 UTCEchelonGraph re-scored
  75. 2026-10-16 15:20 UTCGHSA enrichmentGHSA-j9j9-688w-mvpv · GitHub severity CRITICAL · GitHub CVSS 9.8

Frequently asked(5)

What is CVE-2026-31436?
CVE-2026-31436 is a critical-severity vulnerability; its CVE record was published on April 22, 2026. In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc() At the end of this function, d is the traversal cursor of flist, but the code completes found instead. This can lead to issues such as NULL pointer…
When was the CVE record for CVE-2026-31436 published?
The CVE record for CVE-2026-31436 was published on April 22, 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 November 11, 2026; the record at its source may have been updated since.
Is CVE-2026-31436 actively exploited?
CVE-2026-31436 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-31436?
CVE-2026-31436 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-31436?
A fix for CVE-2026-31436 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-31436 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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