CVE-2026-23237

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

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

platform/x86: classmate-laptop: Add missing NULL pointer checks

In a few places in the Classmate laptop driver, code using the accel object may run before that object's address is stored in the driver data of the input device using it.

For example, cmpc_accel_sensitivity_store_v4() is the "show" method of cmpc_accel_sensitivity_attr_v4 which is added in cmpc_accel_add_v4(), before calling dev_set_drvdata() for inputdev->dev. If the sysfs attribute is accessed prematurely, the dev_get_drvdata(&inputdev->dev) call in in cmpc_accel_sensitivity_store_v4() returns NULL which leads to a NULL pointer dereference going forward.

Moreover, sysfs attributes using the input device are added before initializing that device by cmpc_add_acpi_notify_device() and if one of them is accessed before running that function, a NULL pointer dereference will occur.

For example, cmpc_accel_sensitivity_attr_v4 is added before calling cmpc_add_acpi_notify_device() and if it is read prematurely, the dev_get_drvdata(&acpi->dev) call in cmpc_accel_sensitivity_show_v4() returns NULL which leads to a NULL pointer dereference going forward.

Fix this by adding NULL pointer checks in all of the relevant places.

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
9%
KEV
Not listed

Published

March 4, 2026

Last Modified

June 17, 2026

Advisory Details (7)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

platform/x86: classmate-laptop: Add missing NULL pointer checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fe747d7112283f47169e9c16e751179a9b38611e
generic

platform/x86: classmate-laptop: Add missing NULL pointer checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eb214804f03c829decf10998e9b7dd26f4c8ab9e
generic

platform/x86: classmate-laptop: Add missing NULL pointer checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/da6e06a5fdbabea3870d18c227734b5dea5b3be6
generic

platform/x86: classmate-laptop: Add missing NULL pointer checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/af673209d43b46257540997aba042b90ef3258c0
generic

platform/x86: classmate-laptop: Add missing NULL pointer checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9cf4b9b8ad09d6e05307abc4e951cabdff4be652
generic

platform/x86: classmate-laptop: Add missing NULL pointer checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/993708fc18d0d0919db438361b4e8c1f980a8d1b
generic

platform/x86: classmate-laptop: Add missing NULL pointer checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/97528b1622b8f129574d29a571c32a3c85eafa3c

Vendor Advisories for CVE-2026-23237(1)

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

Patch Availability(19)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-07-27ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1058.61.1) @ noble2026-07-27ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-134.134.1~22.04.1) @ jammy2026-07-27ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-07-27ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-07-27ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-07-27ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-07-27ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-07-27ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.186.196~20.04.1) @ focal2026-07-27ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-07-27ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-07-27ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-07-27ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-07-27ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-07-27ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-07-27ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-07-27ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-07-27ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-07-27ubuntu
linuxKernel @ 5.10.251—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 (49 versions)5.10.251-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.162-1~deb11u1 (15 versions)6.1.164-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (47 versions)6.1.164-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.74-2~bpo12+1 (15 versions)6.12.74-2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (102 versions)6.18.13-1—

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 5× in last 7d / 23× 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.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-18 18:36 UTCOSV refresh
  3. 2026-09-16 14:07 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-13 16:47 UTCEPSS rescore
  6. 2026-09-12 15:01 UTCEPSS rescore
  7. 2026-09-11 14:52 UTCEPSS rescore
  8. 2026-09-10 09:34 UTCEPSS rescore
  9. 2026-09-08 22:00 UTCEPSS rescore
  10. 2026-09-07 16:01 UTCEPSS rescore
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-06 13:47 UTCEPSS rescore
  13. 2026-09-04 05:06 UTCEPSS rescore
  14. 2026-09-02 14:11 UTCEPSS rescore
  15. 2026-09-01 13:53 UTCEPSS rescore
  16. 2026-08-30 22:04 UTCOSV refresh
  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. 2026-08-23 00:19 UTCEPSS rescore
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-20 22:55 UTCEPSS rescore
  25. 2026-08-19 17:03 UTCEPSS rescore
Show 50 more
  1. 2026-08-18 13:48 UTCEPSS rescore
  2. 2026-08-16 14:56 UTCEPSS rescore
  3. 2026-08-16 02:14 UTCEPSS rescore
  4. 2026-08-15 01:30 UTCEPSS rescore
  5. 2026-08-14 08:37 UTCEG score recompute
  6. 2026-08-14 08:37 UTCVendor advisory
  7. 2026-08-14 08:37 UTCGHSA enrichment
  8. 2026-08-13 22:00 UTCEPSS rescore
  9. 2026-08-13 01:20 UTCEG score recompute
  10. 2026-08-13 01:20 UTCVendor advisory
  11. 2026-08-13 01:20 UTCGHSA enrichment
  12. 2026-08-12 13:50 UTCEPSS rescore
  13. 2026-08-11 23:18 UTCEG score recompute
  14. 2026-08-11 23:18 UTCVendor advisory
  15. 2026-08-11 23:18 UTCGHSA enrichment
  16. 2026-08-11 13:42 UTCEPSS rescore
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 10:17 UTCEG score recompute
  19. 2026-08-10 10:17 UTCVendor advisory
  20. 2026-08-10 10:17 UTCGHSA enrichment
  21. 2026-08-09 13:46 UTCEPSS rescore
  22. 2026-08-09 08:14 UTCEG score recompute
  23. 2026-08-09 08:14 UTCVendor advisory
  24. 2026-08-09 08:14 UTCGHSA enrichment
  25. 2026-08-08 16:37 UTCEPSS rescore
  26. 2026-08-07 20:07 UTCEG score recompute
  27. 2026-08-07 20:07 UTCVendor advisory
  28. 2026-08-07 20:07 UTCGHSA enrichment
  29. 2026-08-06 13:46 UTCEPSS rescore
  30. 2026-08-06 02:42 UTCEG score recompute
  31. 2026-08-06 02:42 UTCVendor advisory
  32. 2026-08-06 02:42 UTCGHSA enrichment
  33. 2026-08-05 19:17 UTCEPSS rescore
  34. 2026-08-04 15:10 UTCEPSS rescore
  35. 2026-08-04 10:38 UTCEPSS rescore
  36. 2026-08-04 04:11 UTCEG score recompute
  37. 2026-08-04 04:11 UTCVendor advisory
  38. 2026-08-04 04:11 UTCGHSA enrichment
  39. 2026-08-03 10:35 UTCEPSS rescore
  40. 2026-08-02 19:01 UTCEG score recompute
  41. 2026-08-02 19:01 UTCVendor advisory
  42. 2026-08-02 19:01 UTCGHSA enrichment
  43. 2026-08-02 02:26 UTCEPSS rescore
  44. 2026-08-01 04:15 UTCEPSS rescore
  45. 2026-07-30 01:30 UTCEPSS rescore
  46. 2026-07-27 14:13 UTCEPSS rescore
  47. 2026-07-27 12:56 UTCEG score recompute
  48. 2026-07-27 12:56 UTCVendor advisory
  49. 2026-07-27 12:56 UTCGHSA enrichment
  50. 2026-07-27 12:50 UTCOSV refresh

Frequently asked(5)

What is CVE-2026-23237?
CVE-2026-23237 is a medium vulnerability published on March 4, 2026. In the Linux kernel, the following vulnerability has been resolved: platform/x86: classmate-laptop: Add missing NULL pointer checks In a few places in the Classmate laptop driver, code using the accel object may run before that object's address is stored in the driver data of the input device using…
When was CVE-2026-23237 disclosed?
CVE-2026-23237 was first published in the National Vulnerability Database on March 4, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23237 actively exploited?
CVE-2026-23237 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 90.7% of all scored CVEs.
What is the CVSS score of CVE-2026-23237?
CVE-2026-23237 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-23237?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23237, 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-2026-23237

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