Vulnerability-Lookup

FKIE_CVE-2026-43239

Vulnerability from fkie_nvd - Published: 2026-05-06 12:16 - Updated: 2026-05-12 18:53

Severity ?

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: client: prevent races in ->query_interfaces() It was possible for two query interface works to be concurrently trying to update the interfaces. Prevent this by checking and updating iface_last_update under iface_lock.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6287eefaf21ec805d42f941bd368018cf397a7f5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/76cc4faba0343c6db945b8dc75425b33d633e1b8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/93e8e3ee165ae4609a1222b516b573837103d2c3	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ab6564f416a6eaf1199200b6100952407b438f7d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c3c06e42e1527716c54f3ad2ced6a034b5f3a489	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	5.19
linux	linux_kernel	5.19
linux	linux_kernel	5.19
linux	linux_kernel	5.19
linux	linux_kernel	5.19
linux	linux_kernel	5.19

JSON

To clipboard

{
  "configurations": [
    {
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        {
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: prevent races in -\u003equery_interfaces()\n\nIt was possible for two query interface works to be concurrently trying\nto update the interfaces.\n\nPrevent this by checking and updating iface_last_update under\niface_lock."
    }
  ],
  "id": "CVE-2026-43239",
  "lastModified": "2026-05-12T18:53:28.560",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
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        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
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  "published": "2026-05-06T12:16:44.217",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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        {
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          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2026-43239 (GCVE-0-2026-43239)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-11 22:20

Title

smb: client: prevent races in ->query_interfaces()

Summary

Severity ?

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/93e8e3ee165ae4609…
https://git.kernel.org/stable/c/ab6564f416a6eaf11…
https://git.kernel.org/stable/c/6287eefaf21ec805d…
https://git.kernel.org/stable/c/76cc4faba0343c6db…
https://git.kernel.org/stable/c/c3c06e42e1527716c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: aa45dadd34e44fcd6a9df4b395bee5b5633b4cec , < 93e8e3ee165ae4609a1222b516b573837103d2c3 (git) Affected: aa45dadd34e44fcd6a9df4b395bee5b5633b4cec , < ab6564f416a6eaf1199200b6100952407b438f7d (git) Affected: aa45dadd34e44fcd6a9df4b395bee5b5633b4cec , < 6287eefaf21ec805d42f941bd368018cf397a7f5 (git) Affected: aa45dadd34e44fcd6a9df4b395bee5b5633b4cec , < 76cc4faba0343c6db945b8dc75425b33d633e1b8 (git) Affected: aa45dadd34e44fcd6a9df4b395bee5b5633b4cec , < c3c06e42e1527716c54f3ad2ced6a034b5f3a489 (git)
Linux	Linux	Affected: 5.19 Unaffected: 0 , < 5.19 (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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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/client/smb2ops.c"
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      "title": "smb: client: prevent races in -\u003equery_interfaces()",
      "x_generator": {
        "engine": "bippy-1.2.0"
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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-2026-43239

CVE-2026-43239 (GCVE-0-2026-43239)

Tags

Sightings

Nomenclature