CVE-2026-23055

UNRATEDCVSS · not yet scored

Also known asEUVD-2026-5491 (ENISA EUVD) · GHSA-9pxj-wr74-v9rh (GitHub Security Advisories)Source: ENISA EUVD

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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS v2: —Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

i2c: riic: Move suspend handling to NOIRQ phase

Commit 53326135d0e0 ("i2c: riic: Add suspend/resume support") added suspend support for the Renesas I2C driver and following this change on RZ/G3E the following WARNING is seen on entering suspend ...

[ 134.275704] Freezing remaining freezable tasks completed (elapsed 0.001 seconds) [ 134.285536] ------------[ cut here ]------------ [ 134.290298] i2c i2c-2: Transfer while suspended [ 134.295174] WARNING: drivers/i2c/i2c-core.h:56 at __i2c_smbus_xfer+0x1e4/0x214, CPU#0: systemd-sleep/388 [ 134.365507] Tainted: [W]=WARN [ 134.368485] Hardware name: Renesas SMARC EVK version 2 based on r9a09g047e57 (DT) [ 134.375961] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 134.382935] pc : __i2c_smbus_xfer+0x1e4/0x214 [ 134.387329] lr : __i2c_smbus_xfer+0x1e4/0x214 [ 134.391717] sp : ffff800083f23860 [ 134.395040] x29: ffff800083f23860 x28: 0000000000000000 x27: ffff800082ed5d60 [ 134.402226] x26: 0000001f4395fd74 x25: 0000000000000007 x24: 0000000000000001 [ 134.409408] x23: 0000000000000000 x22: 000000000000006f x21: ffff800083f23936 [ 134.416589] x20: ffff0000c090e140 x19: ffff0000c090e0d0 x18: 0000000000000006 [ 134.423771] x17: 6f63657320313030 x16: 2e30206465737061 x15: ffff800083f23280 [ 134.430953] x14: 0000000000000000 x13: ffff800082b16ce8 x12: 0000000000000f09 [ 134.438134] x11: 0000000000000503 x10: ffff800082b6ece8 x9 : ffff800082b16ce8 [ 134.445315] x8 : 00000000ffffefff x7 : ffff800082b6ece8 x6 : 80000000fffff000 [ 134.452495] x5 : 0000000000000504 x4 : 0000000000000000 x3 : 0000000000000000 [ 134.459672] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000c9ee9e80 [ 134.466851] Call trace: [ 134.469311] __i2c_smbus_xfer+0x1e4/0x214 (P) [ 134.473715] i2c_smbus_xfer+0xbc/0x120 [ 134.477507] i2c_smbus_read_byte_data+0x4c/0x84 [ 134.482077] isl1208_i2c_read_time+0x44/0x178 [rtc_isl1208] [ 134.487703] isl1208_rtc_read_time+0x14/0x20 [rtc_isl1208] [ 134.493226] __rtc_read_time+0x44/0x88 [ 134.497012] rtc_read_time+0x3c/0x68 [ 134.500622] rtc_suspend+0x9c/0x170

The warning is triggered because I2C transfers can still be attempted while the controller is already suspended, due to inappropriate ordering of the system sleep callbacks.

If the controller is autosuspended, there is no way to wake it up once runtime PM disabled (in suspend_late()). During system resume, the I2C controller will be available only after runtime PM is re-enabled (in resume_early()). However, this may be too late for some devices.

Wake up the controller in the suspend() callback while runtime PM is still enabled. The I2C controller will remain available until the suspend_noirq() callback (pm_runtime_force_suspend()) is called. During resume, the I2C controller can be restored by the resume_noirq() callback (pm_runtime_force_resume()). Finally, the resume() callback re-enables autosuspend. As a result, the I2C controller can remain available until the system enters suspend_noirq() and from resume_noirq().

CVSS v3
—
EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0.2%
EPSS %ILE
9th
KEV
Not listed

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

EG Severity
Not assessed: no CVSS publishedA missing CVSS is not a severity of zero.
EG Likelihood
0.2% 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
No SSVC decision: EchelonGraph has not assessed this CVECISA 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, and whom BOD 26-04 binds: the BOD 26-04 block below.

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.

The score's inputs: 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

February 4, 2026

Last Modified

June 17, 2026

References (3)

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-azure-6.17 (6.17.0-1021.21~24.04.1) @ noble2026-10-27ubuntu
ubuntulinux-tools-realtime-hwe-24.04 (6.17.0-1018.20~24.04.1) @ noble2026-10-27ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1030.30) @ noble2026-10-27ubuntu
ubuntulinux-tools-azure-fde-6.17 (6.17.0-1018.18~24.04.1) @ noble2026-10-27ubuntu
ubuntulinux-tools-nvidia-hwe-24.04 (6.17.0-1031.31) @ noble2026-10-27ubuntu
ubuntulinux-tools-oracle-64k-6.17 (6.17.0-1019.19~24.04.3+1) @ noble2026-10-27ubuntu
linuxKernel @ 6.12.67 (fixes >=6.12.0)—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 ... 6.12.69-1~bpo12+1 (10 versions)
  • every version up to 6.12.69-1: fixed in 6.12.69-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (97 versions)
  • every version up to 6.18.8-1: fixed in 6.18.8-1
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All Vendor Advisories

(6)

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 7× in last 7d / 40× 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 99 of 233 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 134 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-06 16:37 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  2. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  4. 2026-11-03 16:47 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  5. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  6. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  7. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  8. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  9. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  10. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  11. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  12. 2026-10-27 10:50 UTCEG score recompute
  13. 2026-10-27 10:50 UTCVendor advisory
  14. 2026-10-27 10:50 UTCGHSA enrichmentGHSA-9pxj-wr74-v9rh
  15. 2026-10-27 03:55 UTCOSV refresh
  16. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  17. 2026-10-25 14:41 UTCEG score recompute
  18. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  19. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  20. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  21. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  22. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  23. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  24. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  25. 2026-10-18 03:55 UTCEG score recompute
Show 74 more
  1. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  2. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  3. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  4. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  5. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  6. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  7. 2026-10-12 16:21 UTCEG score recompute
  8. 2026-10-11 20:03 UTCEG score recompute
  9. 2026-10-11 17:16 UTCEG score recompute
  10. 2026-10-11 14:48 UTCEG score recompute
  11. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  12. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  14. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  15. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  16. 2026-10-07 09:54 UTCOSV refresh
  17. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  18. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  19. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  20. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  21. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  22. 2026-09-29 15:21 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  23. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  24. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  26. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  27. 2026-09-24 14:03 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  28. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  29. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  30. 2026-09-17 15:36 UTCOSV refresh
  31. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  32. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  33. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  34. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  35. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  36. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  37. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  38. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  39. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  40. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  41. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  42. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  43. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  44. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  45. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  46. 2026-08-29 16:13 UTCOSV refresh
  47. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  48. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  49. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  50. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  51. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  52. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  53. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  54. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  55. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  56. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  57. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  58. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  59. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  60. 2026-08-13 03:34 UTCVendor advisory
  61. 2026-08-13 03:34 UTCGHSA enrichmentGHSA-9pxj-wr74-v9rh
  62. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  63. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  64. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  65. 2026-08-09 15:53 UTCVendor advisory
  66. 2026-08-09 15:53 UTCGHSA enrichmentGHSA-9pxj-wr74-v9rh
  67. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  68. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  69. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  70. 2026-08-06 04:23 UTCVendor advisory
  71. 2026-08-06 04:23 UTCGHSA enrichmentGHSA-9pxj-wr74-v9rh
  72. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  73. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  74. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.2% · 6th percentile

Related CVEs(same vendor)

Frequently asked(4)

What is CVE-2026-23055?
CVE-2026-23055 is a vulnerability whose severity is not yet rated; its CVE record was published on February 4, 2026. In the Linux kernel, the following vulnerability has been resolved: i2c: riic: Move suspend handling to NOIRQ phase Commit 53326135d0e0 ("i2c: riic: Add suspend/resume support") added suspend support for the Renesas I2C driver and following this change on RZ/G3E the following WARNING is seen on…
When was the CVE record for CVE-2026-23055 published?
The CVE record for CVE-2026-23055 was published on February 4, 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 June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-23055 actively exploited?
CVE-2026-23055 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
How do I remediate CVE-2026-23055?
A fix for CVE-2026-23055 is available: update to the fixed version the vendor names in its advisory.

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