{"id":"CVE-2022-49709","state":"PUBLISHED","title":"cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncfi: Fix __cfi_slowpath_diag RCU usage with cpuidle\n\nRCU_NONIDLE usage during __cfi_slowpath_diag can result in an invalid\nRCU state in the cpuidle code path:\n\n  WARNING: CPU: 1 PID: 0 at kernel/rcu/tree.c:613 rcu_eqs_enter+0xe4/0x138\n  ...\n  Call trace:\n    rcu_eqs_enter+0xe4/0x138\n    rcu_idle_enter+0xa8/0x100\n    cpuidle_enter_state+0x154/0x3a8\n    cpuidle_enter+0x3c/0x58\n    do_idle.llvm.6590768638138871020+0x1f4/0x2ec\n    cpu_startup_entry+0x28/0x2c\n    secondary_start_kernel+0x1b8/0x220\n    __secondary_switched+0x94/0x98\n\nInstead, call rcu_irq_enter/exit to wake up RCU only when needed and\ndisable interrupts for the entire CFI shadow/module check when we do.","publishedAt":"2025-02-26T02:24:26.817Z","updatedAt":"2026-05-11T19:05:13.734Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cf68fffb66d60d96209446bfc4a15291dc5a5d41","status":"affected","lessThan":"75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5ed","versionType":"git"},{"version":"cf68fffb66d60d96209446bfc4a15291dc5a5d41","status":"affected","lessThan":"ca3897f2ac02ceae5e6fa794f83c36f9885b93da","versionType":"git"},{"version":"cf68fffb66d60d96209446bfc4a15291dc5a5d41","status":"affected","lessThan":"57cd6d157eb479f0a8e820fd36b7240845c8a937","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/cfi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"5.15.49","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.6","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/cfi.c"]}],"references":["https://git.kernel.org/stable/c/75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5ed","https://git.kernel.org/stable/c/ca3897f2ac02ceae5e6fa794f83c36f9885b93da","https://git.kernel.org/stable/c/57cd6d157eb479f0a8e820fd36b7240845c8a937"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49709.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49709","state":"PUBLISHED","datePublished":"2025-02-26T02:24:26.817Z","dateUpdated":"2026-05-11T19:05:13.734Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:21:30.444Z"},"containers":{"cna":{"title":"cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncfi: Fix __cfi_slowpath_diag RCU usage with cpuidle\n\nRCU_NONIDLE usage during __cfi_slowpath_diag can result in an invalid\nRCU state in the cpuidle code path:\n\n  WARNING: CPU: 1 PID: 0 at kernel/rcu/tree.c:613 rcu_eqs_enter+0xe4/0x138\n  ...\n  Call trace:\n    rcu_eqs_enter+0xe4/0x138\n    rcu_idle_enter+0xa8/0x100\n    cpuidle_enter_state+0x154/0x3a8\n    cpuidle_enter+0x3c/0x58\n    do_idle.llvm.6590768638138871020+0x1f4/0x2ec\n    cpu_startup_entry+0x28/0x2c\n    secondary_start_kernel+0x1b8/0x220\n    __secondary_switched+0x94/0x98\n\nInstead, call rcu_irq_enter/exit to wake up RCU only when needed and\ndisable interrupts for the entire CFI shadow/module check when we do."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"cf68fffb66d60d96209446bfc4a15291dc5a5d41","status":"affected","lessThan":"75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5ed","versionType":"git"},{"version":"cf68fffb66d60d96209446bfc4a15291dc5a5d41","status":"affected","lessThan":"ca3897f2ac02ceae5e6fa794f83c36f9885b93da","versionType":"git"},{"version":"cf68fffb66d60d96209446bfc4a15291dc5a5d41","status":"affected","lessThan":"57cd6d157eb479f0a8e820fd36b7240845c8a937","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/cfi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"5.15.49","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.18.6","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/cfi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5ed"},{"url":"https://git.kernel.org/stable/c/ca3897f2ac02ceae5e6fa794f83c36f9885b93da"},{"url":"https://git.kernel.org/stable/c/57cd6d157eb479f0a8e820fd36b7240845c8a937"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:05:13.734Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.15.49"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.18.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}