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CVE-2026-64383

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_flush() replay SMB2_flush() keeps its response buffer bookkeeping across replay attempts. If a replayable flush response is received and the retry then fails before cifs_send_recv() stores a replacement response, flush_exit will free the stale response pointer a second time. Reinitialize resp_buftype and rsp_iov at the top of the replay loop so cleanup only acts on response state produced
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2e2a989cfa37c4d08c749ba10a7c5fcc32cc5728e43eb4c90d9a8e0de4494be5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/client/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6e27f40b682a5e42a2daae3ce6d96f0e0e16dedb","status":"affected","version":"433042a91f9373241307725b52de573933ffedbf","versionType":"git"},{"lessThan":"878757163eea684750107a31ea134c103863515d","status":"affected","version":"4f1fffa2376922f3d1d506e49c0fd445b023a28e","versionType":"git"},{"lessThan":"3407240cde132a4b72d6429a2625a09a2f78adaf","status":"affected","version":"4f1fffa2376922f3d1d506…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e387f5e21e8638cd4b04dce435cba3531a97ab7c7076b655f629bf3fa67eb1ac · sha256:55366e5dfc2ec1e0… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/client/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.8"},{"lessThan":"6.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanO…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e387f5e21e8638cd4b04dce435cba3531a97ab7c7076b655f629bf3fa67eb1ac · sha256:55366e5dfc2ec1e0… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/client/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6e27f40b682a5e42a2daae3ce6d96f0e0e16dedb","status":"affected","version":"433042a91f9373241307725b52de573933ffedbf","versionType":"git"},{"lessThan":"878757163eea684750107a31ea134c103863515d","status":"affected","version":"4f1fffa2376922f3d1d506e49c0fd445b023a28e","versionType":"git"},{"lessThan":"3407240cde132a4b72d6429a2625a09a2f78adaf","status":"affected","version":"4f1fffa2376922f3d1d506…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e387f5e21e8638cd4b04dce435cba3531a97ab7c7076b655f629bf3fa67eb1ac · sha256:55366e5dfc2ec1e0… · /containers/cna/affected/0
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/client/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.8"},{"lessThan":"6.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanO…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e387f5e21e8638cd4b04dce435cba3531a97ab7c7076b655f629bf3fa67eb1ac · sha256:55366e5dfc2ec1e0… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e387f5e21e8638cd4b04dce435cba3531a97ab7c7076b655f629bf3fa67eb1ac · sha256:55366e5dfc2ec1e0… · /containers/cna/metrics/0/cvssV3_1

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/013a9a3da46c5dabcf18f65ea6a47874ba12a15d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e387f5e21e8638cd4b04dce435cba3531a97ab7c7076b655f629bf3fa67eb1ac · sha256:55366e5dfc2ec1e0… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/3407240cde132a4b72d6429a2625a09a2f78adaf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e387f5e21e8638cd4b04dce435cba3531a97ab7c7076b655f629bf3fa67eb1ac · sha256:55366e5dfc2ec1e0… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/4be31c943a3a27a5a0251dbb8f5cb89059ec3d5a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e387f5e21e8638cd4b04dce435cba3531a97ab7c7076b655f629bf3fa67eb1ac · sha256:55366e5dfc2ec1e0… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/6e27f40b682a5e42a2daae3ce6d96f0e0e16dedb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e387f5e21e8638cd4b04dce435cba3531a97ab7c7076b655f629bf3fa67eb1ac · sha256:55366e5dfc2ec1e0… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/878757163eea684750107a31ea134c103863515d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e387f5e21e8638cd4b04dce435cba3531a97ab7c7076b655f629bf3fa67eb1ac · sha256:55366e5dfc2ec1e0… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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