{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90107","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.787Z","datePublished":"2026-09-17T16:06:16.157Z","dateUpdated":"2026-09-17T16:06:16.157Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:06:16.157Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: free pending qentry in smc_llc_flow_stop() before memset\n\nsmc_llc_flow_stop() resets a flow struct with a blind memset:\n\n\tspin_lock_bh(&lgr->llc_flow_lock);\n\tmemset(flow, 0, sizeof(*flow));\n\tflow->type = SMC_LLC_FLOW_NONE;\n\tspin_unlock_bh(&lgr->llc_flow_lock);\n\nIf flow->qentry is non-NULL at this point the pointer is overwritten without the\nallocation being freed, leaking one kmalloc object.\n\nA late-arriving duplicate CONFIRM_LINK or ADD_LINK_CONT message can set\nflow->qentry after the legitimate message has been consumed by the waiter via\nsmc_llc_flow_qentry_clr() (which NULLs the pointer but leaves flow->type\nnon-zero) but before the flow completes and smc_llc_flow_stop() runs.  In that\nwindow the duplicate is stashed into flow->qentry, and then lost when\nsmc_llc_flow_stop() zeros the struct.\n\nCall smc_llc_flow_qentry_del() inside the lock before the memset.\nsmc_llc_flow_qentry_del() already checks flow->qentry before freeing, so the\nnormal case where no entry is pending is a no-op."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/smc/smc_llc.c"],"versions":[{"version":"555da9af827d95134656fa459c8f3ece04dd867a","lessThan":"8e3deb150a5237b672c4579e69a6deb02027dbed","status":"affected","versionType":"git"},{"version":"555da9af827d95134656fa459c8f3ece04dd867a","lessThan":"11bc373ee6630709f0c2da2e7860c23d503c9e9d","status":"affected","versionType":"git"},{"version":"555da9af827d95134656fa459c8f3ece04dd867a","lessThan":"032aec7d03c9102616b98fea74f8f7145e7f867c","status":"affected","versionType":"git"},{"version":"555da9af827d95134656fa459c8f3ece04dd867a","lessThan":"957dba2b8b5aebfe09caa6a6b22b958079082eab","status":"affected","versionType":"git"},{"version":"555da9af827d95134656fa459c8f3ece04dd867a","lessThan":"f03aa5d36ae3c4068a1c3885146be99aa7fd9307","status":"affected","versionType":"git"},{"version":"555da9af827d95134656fa459c8f3ece04dd867a","lessThan":"0879ea157acc1ac6752f6fcb755d1f91a2359238","status":"affected","versionType":"git"},{"version":"555da9af827d95134656fa459c8f3ece04dd867a","lessThan":"5ff429dd6725fa6c1e17a4ed0be8ab675f67a98b","status":"affected","versionType":"git"},{"version":"555da9af827d95134656fa459c8f3ece04dd867a","lessThan":"5ee0ceddc7785c6dcf4a8107fef01f0414a354f4","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/smc/smc_llc.c"],"versions":[{"version":"5.8","status":"affected"},{"version":"0","lessThan":"5.8","status":"unaffected","versionType":"semver"},{"version":"5.10.270","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.221","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.188","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"5.8","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/8e3deb150a5237b672c4579e69a6deb02027dbed"},{"url":"https://git.kernel.org/stable/c/11bc373ee6630709f0c2da2e7860c23d503c9e9d"},{"url":"https://git.kernel.org/stable/c/032aec7d03c9102616b98fea74f8f7145e7f867c"},{"url":"https://git.kernel.org/stable/c/957dba2b8b5aebfe09caa6a6b22b958079082eab"},{"url":"https://git.kernel.org/stable/c/f03aa5d36ae3c4068a1c3885146be99aa7fd9307"},{"url":"https://git.kernel.org/stable/c/0879ea157acc1ac6752f6fcb755d1f91a2359238"},{"url":"https://git.kernel.org/stable/c/5ff429dd6725fa6c1e17a4ed0be8ab675f67a98b"},{"url":"https://git.kernel.org/stable/c/5ee0ceddc7785c6dcf4a8107fef01f0414a354f4"}],"title":"net/smc: free pending qentry in smc_llc_flow_stop() before memset","x_generator":{"engine":"bippy-1.2.0"}}}}