smb: client: fix double-free in SMB2_close() replay

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64597
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-06 08:16:35 UTC
Updated2026-08-06 08:16:35 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_close() replay A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_close_init() fails before the next send, cleanup retains the previous buffer type and frees that response again. Reset response bookkeeping before each attempt to prevent the stale free.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 433042a91f9373241307725b52de573933ffedbf 037511726228aaf165c7067ff2bfc88eaecdf1f3 git Not specified
CNA Linux Linux affected 4f1fffa2376922f3d1d506e49c0fd445b023a28e 0aa97edf7c347c0f54e7e60c4740574b8120c66a git Not specified
CNA Linux Linux affected 4f1fffa2376922f3d1d506e49c0fd445b023a28e d15d83125007f673aec4323e1bbbaaffbe87ea13 git Not specified
CNA Linux Linux affected 4f1fffa2376922f3d1d506e49c0fd445b023a28e b18ed621dbfceecea5539848cddcb9272c9a61e1 git Not specified
CNA Linux Linux affected 4f1fffa2376922f3d1d506e49c0fd445b023a28e f96e1cdcb63ed3321142ff2fcdf784e32cda8fee git Not specified
CNA Linux Linux affected 6.6.32 6.6.145 semver Not specified
CNA Linux Linux affected 6.8 Not specified
CNA Linux Linux unaffected 6.8 semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.96 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.39 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.4 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f96e1cdcb63ed3321142ff2fcdf784e32cda8fee 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d15d83125007f673aec4323e1bbbaaffbe87ea13 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/037511726228aaf165c7067ff2bfc88eaecdf1f3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b18ed621dbfceecea5539848cddcb9272c9a61e1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0aa97edf7c347c0f54e7e60c4740574b8120c66a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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