{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89794","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.766Z","datePublished":"2026-09-16T10:30:25.592Z","dateUpdated":"2026-09-16T10:30:25.592Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-16T10:30:25.592Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: zero pipe read compound padding\n\nCompound response handling extends the last response iov to an eight-byte\nboundary.\n\nsmb2_read_pipe() allocates only the payload size, so the alignment padding\ncan expose up to seven bytes of uninitialized kernel heap memory.\n\nAllocate the aligned size and clear the unused tail before pinning the\nresponse buffer."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/server/smb2pdu.c"],"versions":[{"version":"e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d","lessThan":"f188a400dd5285fec5a84548fe8dca49eee01155","status":"affected","versionType":"git"},{"version":"e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d","lessThan":"d83a9de7cecd401c3d3e00ed6371194dcd7313e4","status":"affected","versionType":"git"},{"version":"e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d","lessThan":"be15b8da4a82cf1e1f9880b2661b90770606eec1","status":"affected","versionType":"git"},{"version":"e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d","lessThan":"73f860489e3be2245598d1819226304fc5b87291","status":"affected","versionType":"git"},{"version":"f2283680a80571ca82d710bc6ecd8f8beac67d63","status":"affected","versionType":"git"},{"version":"9f297df20d93411c0b4ddad7f88ba04a7cd36e77","status":"affected","versionType":"git"},{"version":"5.15.145","lessThan":"5.16","status":"affected","versionType":"semver"},{"version":"6.1.71","lessThan":"6.2","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/server/smb2pdu.c"],"versions":[{"version":"6.6","status":"affected"},{"version":"0","lessThan":"6.6","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.51","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.5","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.3-rc2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.71"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/f188a400dd5285fec5a84548fe8dca49eee01155"},{"url":"https://git.kernel.org/stable/c/d83a9de7cecd401c3d3e00ed6371194dcd7313e4"},{"url":"https://git.kernel.org/stable/c/be15b8da4a82cf1e1f9880b2661b90770606eec1"},{"url":"https://git.kernel.org/stable/c/73f860489e3be2245598d1819226304fc5b87291"}],"title":"ksmbd: zero pipe read compound padding","x_generator":{"engine":"bippy-1.2.0"}}}}