CVE-2026-31608 (GCVE-0-2026-31608)

Vulnerability from cvelistv5 – Published: 2026-04-24 14:42 – Updated: 2026-04-27 14:04
VLAI?
Title
smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()
Summary
In the Linux kernel, the following vulnerability has been resolved: smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list() smb_direct_flush_send_list() already calls smb_direct_free_sendmsg(), so we should not call it again after post_sendmsg() moved it to the batch list.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5ef18a2e66f2f33fdac64437bddfb9fe6389fdc7 , < 6968c91fab05b8fc4d6700e0cf34472bb422df25 (git)
Affected: 79242e7b6bc63efec28b7c235bc320806afce6c0 , < 2ba03f46132b0d1a7bafb86e1ef61951a2254023 (git)
Affected: 34abd408c8ba24d7c97bd02ba874d8c714f49db1 , < 830de6eeb9db4cb7e758201fb99328ef4ca4b032 (git)
Affected: 34abd408c8ba24d7c97bd02ba874d8c714f49db1 , < 84ff995ae826aa6bbcc6c7b9ea569ff67c021d72 (git)
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    Linux Linux Affected: 7.0
Unaffected: 0 , < 7.0 (semver)
Unaffected: 6.18.24 , ≤ 6.18.* (semver)
Unaffected: 6.19.14 , ≤ 6.19.* (semver)
Unaffected: 7.0.1 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)
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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

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.



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