{"id":"CVE-2026-89618","state":"PUBLISHED","title":"eventfs: Initialize ei->children and ei->list in init_ei()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\neventfs: Initialize ei->children and ei->list in init_ei()\n\neventfs_create_dir() allocates the eventfs_inode and initializes it with\ninit_ei(). But this does not initialize the eventfs_inode list_heads. If\nthe eventfs_create_dir() fails due to memory pressure, it will call\nfree_ei() before it initialized the lists, and that checks to make sure\nthe eventfs_inode has no children. But because the list wasn't\ninitialized, it will give a false warning.\n\nFix it by moving the list initialization into init_ei().\n\n[ Rewrote change log ]","publishedAt":"2026-09-11T19:45:17.397Z","updatedAt":"2026-10-19T08:49:50.770Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"35ee34c0f6d578c9d245438ca29bf2e7024a5a65","status":"affected","lessThan":"069729282fbecfaa8a54062266c338ed23f08005","versionType":"git"},{"version":"5790b1fb3d672d9a1fe3881a7181dfdbe741568f","status":"affected","lessThan":"c480f8af173d5b19c6d9c4311df6bbe352face9e","versionType":"git"},{"version":"5790b1fb3d672d9a1fe3881a7181dfdbe741568f","status":"affected","lessThan":"5333e18e6b425fcc39c7fea89e3949a2a98bc5e4","versionType":"git"},{"version":"5790b1fb3d672d9a1fe3881a7181dfdbe741568f","status":"affected","lessThan":"76e0f85f650738d768449dbccbc7c55d05f5b609","versionType":"git"},{"version":"5790b1fb3d672d9a1fe3881a7181dfdbe741568f","status":"affected","lessThan":"1704aaaf5d22bc765c168402350d191e24e245bc","versionType":"git"},{"version":"6.6.18","status":"affected","lessThan":"6.6.157","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/tracefs/event_inode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/tracefs/event_inode.c"]}],"references":["https://git.kernel.org/stable/c/069729282fbecfaa8a54062266c338ed23f08005","https://git.kernel.org/stable/c/c480f8af173d5b19c6d9c4311df6bbe352face9e","https://git.kernel.org/stable/c/5333e18e6b425fcc39c7fea89e3949a2a98bc5e4","https://git.kernel.org/stable/c/76e0f85f650738d768449dbccbc7c55d05f5b609","https://git.kernel.org/stable/c/1704aaaf5d22bc765c168402350d191e24e245bc"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89618.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89618","state":"PUBLISHED","datePublished":"2026-09-11T19:45:17.397Z","dateUpdated":"2026-10-19T08:49:50.770Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.736Z"},"containers":{"cna":{"title":"eventfs: Initialize ei->children and ei->list in init_ei()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\neventfs: Initialize ei->children and ei->list in init_ei()\n\neventfs_create_dir() allocates the eventfs_inode and initializes it with\ninit_ei(). But this does not initialize the eventfs_inode list_heads. If\nthe eventfs_create_dir() fails due to memory pressure, it will call\nfree_ei() before it initialized the lists, and that checks to make sure\nthe eventfs_inode has no children. But because the list wasn't\ninitialized, it will give a false warning.\n\nFix it by moving the list initialization into init_ei().\n\n[ Rewrote change log ]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"35ee34c0f6d578c9d245438ca29bf2e7024a5a65","status":"affected","lessThan":"069729282fbecfaa8a54062266c338ed23f08005","versionType":"git"},{"version":"5790b1fb3d672d9a1fe3881a7181dfdbe741568f","status":"affected","lessThan":"c480f8af173d5b19c6d9c4311df6bbe352face9e","versionType":"git"},{"version":"5790b1fb3d672d9a1fe3881a7181dfdbe741568f","status":"affected","lessThan":"5333e18e6b425fcc39c7fea89e3949a2a98bc5e4","versionType":"git"},{"version":"5790b1fb3d672d9a1fe3881a7181dfdbe741568f","status":"affected","lessThan":"76e0f85f650738d768449dbccbc7c55d05f5b609","versionType":"git"},{"version":"5790b1fb3d672d9a1fe3881a7181dfdbe741568f","status":"affected","lessThan":"1704aaaf5d22bc765c168402350d191e24e245bc","versionType":"git"},{"version":"6.6.18","status":"affected","lessThan":"6.6.157","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/tracefs/event_inode.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.109","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/tracefs/event_inode.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/069729282fbecfaa8a54062266c338ed23f08005"},{"url":"https://git.kernel.org/stable/c/c480f8af173d5b19c6d9c4311df6bbe352face9e"},{"url":"https://git.kernel.org/stable/c/5333e18e6b425fcc39c7fea89e3949a2a98bc5e4"},{"url":"https://git.kernel.org/stable/c/76e0f85f650738d768449dbccbc7c55d05f5b609"},{"url":"https://git.kernel.org/stable/c/1704aaaf5d22bc765c168402350d191e24e245bc"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:49:50.770Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.18","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.109"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}