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

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-08 12:41
VLAI?
Title
smb: client: prevent races in ->query_interfaces()
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.
Severity ?
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Assigner
References
Impacted 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)
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    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)
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{
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          "programFiles": [
            "fs/smb/client/smb2ops.c"
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.