Vulnerability-Lookup

FKIE_CVE-2026-43123

Vulnerability from fkie_nvd - Published: 2026-05-06 12:16 - Updated: 2026-05-12 21:17

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: fbcon: check return value of con2fb_acquire_newinfo() If fbcon_open() fails when called from con2fb_acquire_newinfo() then info->fbcon_par pointer remains NULL which is later dereferenced. Add check for return value of the function con2fb_acquire_newinfo() to avoid it. Found by Linux Verification Center (linuxtesting.org) with SVACE.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/011a0502801c8536f64141a2b61362c14f456544	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0b038c0be6827dd2dbb1ce4f8d92d97c80cbe9cc	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/11a93180a70bb3095a9bd80d113d9277e30d9959	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3b5a754ec86bc6064af9aca76eb191c2405e6b0c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a785c4e2a999c2d51dfcf40d317cfb30cc735d2c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d3e535533767c85788529e626478718b7e95a59f	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f57b61624c86ef8f87f6e6b7dd0755de03d90e89	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "versionEndExcluding": "5.15.203",
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              "vulnerable": true
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    }
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  "id": "CVE-2026-43123",
  "lastModified": "2026-05-12T21:17:55.990",
  "metrics": {
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2026-05-06T12:16:29.180",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "value": "CWE-476"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}

CVE-2026-43123 (GCVE-0-2026-43123)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-05-11 22:18

Title

fbcon: check return value of con2fb_acquire_newinfo()

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/d3e535533767c8578…
https://git.kernel.org/stable/c/3b5a754ec86bc6064…
https://git.kernel.org/stable/c/a785c4e2a999c2d51…
https://git.kernel.org/stable/c/0b038c0be6827dd2d…
https://git.kernel.org/stable/c/11a93180a70bb3095…
https://git.kernel.org/stable/c/f57b61624c86ef8f8…
https://git.kernel.org/stable/c/011a0502801c8536f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e , < d3e535533767c85788529e626478718b7e95a59f (git) Affected: d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e , < 3b5a754ec86bc6064af9aca76eb191c2405e6b0c (git) Affected: d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e , < a785c4e2a999c2d51dfcf40d317cfb30cc735d2c (git) Affected: d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e , < 0b038c0be6827dd2dbb1ce4f8d92d97c80cbe9cc (git) Affected: d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e , < 11a93180a70bb3095a9bd80d113d9277e30d9959 (git) Affected: d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e , < f57b61624c86ef8f87f6e6b7dd0755de03d90e89 (git) Affected: d1baa4ffa677bf6986c460fcfd4cdaf8bfe66f0e , < 011a0502801c8536f64141a2b61362c14f456544 (git)
Linux	Linux	Affected: 2.6.23 Unaffected: 0 , < 2.6.23 (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.165 , ≤ 6.1.* (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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          "programFiles": [
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-43123

CVE-2026-43123 (GCVE-0-2026-43123)

Tags

Sightings

Nomenclature