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CVE-2022-49709— cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle

AI Predicted 5.5 Difficulty: Hard EPSS 0.25% · P17

Affected Version Matrix 8

VendorProductVersion RangeStatus
LinuxLinuxcf68fffb66d60d96209446bfc4a15291dc5a5d41< 75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5edaffected
cf68fffb66d60d96209446bfc4a15291dc5a5d41< ca3897f2ac02ceae5e6fa794f83c36f9885b93daaffected
cf68fffb66d60d96209446bfc4a15291dc5a5d41< 57cd6d157eb479f0a8e820fd36b7240845c8a937affected
5.13affected
< 5.13unaffected
5.15.49≤ 5.15.*unaffected
5.18.6≤ 5.18.*unaffected
5.19≤ *unaffected
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I. Basic Information for CVE-2022-49709

Vulnerability Information
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Vulnerability Title
cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle RCU_NONIDLE usage during __cfi_slowpath_diag can result in an invalid RCU state in the cpuidle code path: WARNING: CPU: 1 PID: 0 at kernel/rcu/tree.c:613 rcu_eqs_enter+0xe4/0x138 ... Call trace: rcu_eqs_enter+0xe4/0x138 rcu_idle_enter+0xa8/0x100 cpuidle_enter_state+0x154/0x3a8 cpuidle_enter+0x3c/0x58 do_idle.llvm.6590768638138871020+0x1f4/0x2ec cpu_startup_entry+0x28/0x2c secondary_start_kernel+0x1b8/0x220 __secondary_switched+0x94/0x98 Instead, call rcu_irq_enter/exit to wake up RCU only when needed and disable interrupts for the entire CFI shadow/module check when we do.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于CFI在cpuidle路径中未正确处理RCU状态。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux cf68fffb66d60d96209446bfc4a15291dc5a5d41 ~ 75f3a5fa2ad049c85ab5d5ee1ed9cfaa7e62c5ed -
LinuxLinux 5.13 -

II. Public POCs for CVE-2022-49709

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III. Intelligence Information for CVE-2022-49709

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Patches & Fixes for CVE-2022-49709 (3)

Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total

CVE-2022-491499.8 CRITICALrxrpc: Fix call timer start racing with call destruction
CVE-2022-495619.8 CRITICALnetfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-493629.8 CRITICALNFSD: Fix potential use-after-free in nfsd_file_put()
CVE-2022-492019.8 CRITICALibmvnic: fix race between xmit and reset
CVE-2022-491949.8 CRITICALnet: bcmgenet: Use stronger register read/writes to assure ordering
CVE-2022-490939.8 CRITICALskbuff: fix coalescing for page_pool fragment recycling
CVE-2022-492609.8 CRITICALcrypto: hisilicon/sec - fix the aead software fallback for engine
CVE-2022-494189.8 CRITICALNFSv4: Fix free of uninitialized nfs4_label on referral lookup.
CVE-2022-490949.8 CRITICALnet/tls: fix slab-out-of-bounds bug in decrypt_internal
CVE-2022-494079.8 CRITICALdlm: fix plock invalid read
CVE-2022-492809.8 CRITICALNFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-493569.8 CRITICALSUNRPC: Trap RDMA segment overflows
CVE-2022-490589.1 CRITICALcifs: potential buffer overflow in handling symlinks
CVE-2022-495008.8 HIGHwl1251: dynamically allocate memory used for DMA
CVE-2022-495358.8 HIGHscsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI
CVE-2022-491148.8 HIGHscsi: libfc: Fix use after free in fc_exch_abts_resp()
CVE-2022-494708.8 HIGHBluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
CVE-2022-491118.8 HIGHBluetooth: Fix use after free in hci_send_acl
CVE-2022-492388.8 HIGHath11k: free peer for station when disconnect from AP for QCA6390/WCN6855
CVE-2022-495198.8 HIGHath10k: skip ath10k_halt during suspend for driver state RESTARTING

Showing top 20 of 706 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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