{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98775","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.369Z","datePublished":"2026-10-18T15:48:11.317Z","dateUpdated":"2026-10-30T12:39:42.932Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:39:42.932Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnitro_enclaves: fix use-after-free on SLOT_ALLOC failure\n\nWhen ne_create_vm_ioctl() fails the SLOT_ALLOC request after\nanon_inode_getfile() has succeeded, the error path calls\nfput(enclave_file) and then frees ne_enclave.\n\nIn normal userspace context, fput() defers the final __fput() via\ntask_work. ne_enclave_release() therefore runs after ne_enclave has\nalready been freed and dereferences ne_enclave->slot_uid, causing a\nuse-after-free: KASAN: slab-use-after-free in ne_enclave_release.\n\nThe enclave has no slot allocated and is not yet linked into the\nenclaves list on this error path, so ne_enclave_release() is expected\nto return early when slot_uid is zero. However, reading slot_uid\nalready accesses the freed object.\n\nClear enclave_file->private_data before fput() on the error path.\nne_enclave_release() then returns immediately when private_data is\nNULL, leaving the ioctl error path as the sole owner of ne_enclave.\nThis is safe because the file has not been fd_install()'d yet.\n\nTested on an AWS EC2 m5.2xlarge with CONFIG_KASAN=y. Without the\npatch, the reproducer triggers a KASAN slab-use-after-free on every\nSLOT_ALLOC failure. With the patch, no KASAN report is produced and\nthe SLOT_ALLOC error is still returned. Normal enclave creation and\nteardown are unaffected."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/virt/nitro_enclaves/ne_misc_dev.c"],"versions":[{"version":"9c8eb50fe9e2bb8a2e725979e052fbf592b6b799","lessThan":"718965a5fcea47f7ec6accff55306317aadc3af3","status":"affected","versionType":"git"},{"version":"9c8eb50fe9e2bb8a2e725979e052fbf592b6b799","lessThan":"dac89ed976d9826eae4703281d0d51b062b58eef","status":"affected","versionType":"git"},{"version":"9c8eb50fe9e2bb8a2e725979e052fbf592b6b799","lessThan":"8024c50b8763add7912b6d9830327ba73f994204","status":"affected","versionType":"git"},{"version":"9c8eb50fe9e2bb8a2e725979e052fbf592b6b799","lessThan":"8bde6f643ab6fe5e3e3f4c312f84ce327ecf39b2","status":"affected","versionType":"git"},{"version":"9c8eb50fe9e2bb8a2e725979e052fbf592b6b799","lessThan":"466041d14f26dc2babd606a2e85dce08774112a6","status":"affected","versionType":"git"},{"version":"9c8eb50fe9e2bb8a2e725979e052fbf592b6b799","lessThan":"f7fb6c2835ede1b8ad84cf7e78a528a9d0159b84","status":"affected","versionType":"git"},{"version":"9c8eb50fe9e2bb8a2e725979e052fbf592b6b799","lessThan":"43f78b328f3907ca2f7424e15b7e45ffbf9fe21c","status":"affected","versionType":"git"},{"version":"9c8eb50fe9e2bb8a2e725979e052fbf592b6b799","lessThan":"9bc184a2eda8b773c88ecbff934001ad649b9cc1","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/virt/nitro_enclaves/ne_misc_dev.c"],"versions":[{"version":"5.10","status":"affected"},{"version":"0","lessThan":"5.10","status":"unaffected","versionType":"semver"},{"version":"5.10.273","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.224","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.191","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","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":"5.10","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/718965a5fcea47f7ec6accff55306317aadc3af3"},{"url":"https://git.kernel.org/stable/c/dac89ed976d9826eae4703281d0d51b062b58eef"},{"url":"https://git.kernel.org/stable/c/8024c50b8763add7912b6d9830327ba73f994204"},{"url":"https://git.kernel.org/stable/c/8bde6f643ab6fe5e3e3f4c312f84ce327ecf39b2"},{"url":"https://git.kernel.org/stable/c/466041d14f26dc2babd606a2e85dce08774112a6"},{"url":"https://git.kernel.org/stable/c/f7fb6c2835ede1b8ad84cf7e78a528a9d0159b84"},{"url":"https://git.kernel.org/stable/c/43f78b328f3907ca2f7424e15b7e45ffbf9fe21c"},{"url":"https://git.kernel.org/stable/c/9bc184a2eda8b773c88ecbff934001ad649b9cc1"}],"title":"nitro_enclaves: fix use-after-free on SLOT_ALLOC failure","x_generator":{"engine":"bippy-1.2.0"}}}}