CVE-2022-50771— rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()
Possible ATT&CK Techniques 1AI
T1496 · Resource HijackingAffected Version Matrix 14
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | d860d40327dde251d508a234fa00bd0d90fbb656< 3d92527a919edd1aa381bdd6c299dd75a8167396 | affected |
d860d40327dde251d508a234fa00bd0d90fbb656< 5a52380b8193cf8be6c4a6b94b86ef64ed80c0dc | affected | ||
d860d40327dde251d508a234fa00bd0d90fbb656< 98a5b1265a36e9d843a51ddd6c9fa02da50d2c57 | affected | ||
d860d40327dde251d508a234fa00bd0d90fbb656< a74af9b937707b42c3fd041aae1ed4ce2f337307 | affected | ||
d860d40327dde251d508a234fa00bd0d90fbb656< 80a3e7ab477b3655615fc1627c88c248d4ad28d9 | affected | ||
d860d40327dde251d508a234fa00bd0d90fbb656< ceb1c8c9b8aa9199da46a0f29d2d5f08d9b44c15 | affected | ||
3.17 | affected | ||
< 3.17 | unaffected | ||
| … +6 more rows | |||
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I. Basic Information for CVE-2022-50771
Vulnerability Information
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Vulnerability Title
rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state() Running rcutorture with non-zero fqs_duration module parameter in a kernel built with CONFIG_PREEMPTION=y results in the following splat: BUG: using __this_cpu_read() in preemptible [00000000] code: rcu_torture_fqs/398 caller is __this_cpu_preempt_check+0x13/0x20 CPU: 3 PID: 398 Comm: rcu_torture_fqs Not tainted 6.0.0-rc1-yoctodev-standard+ Call Trace: <TASK> dump_stack_lvl+0x5b/0x86 dump_stack+0x10/0x16 check_preemption_disabled+0xe5/0xf0 __this_cpu_preempt_check+0x13/0x20 rcu_force_quiescent_state.part.0+0x1c/0x170 rcu_force_quiescent_state+0x1e/0x30 rcu_torture_fqs+0xca/0x160 ? rcu_torture_boost+0x430/0x430 kthread+0x192/0x1d0 ? kthread_complete_and_exit+0x30/0x30 ret_from_fork+0x22/0x30 </TASK> The problem is that rcu_force_quiescent_state() uses __this_cpu_read() in preemptible code instead of the proper raw_cpu_read(). This commit therefore changes __this_cpu_read() to raw_cpu_read().
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，该漏洞源于在可抢占代码中使用__this_cpu_read，可能导致数据竞争。
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
II. Public POCs for CVE-2022-50771
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|---|
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Other References for CVE-2022-50771 (3)
Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total
| CVE-2025-68741 | 9.8 CRITICAL | scsi: qla2xxx: Fix improper freeing of purex item |
| CVE-2023-53867 | 9.8 CRITICAL | ceph: fix potential use-after-free bug when trimming caps |
| CVE-2025-68726 | 9.8 CRITICAL | crypto: aead - Fix reqsize handling |
| CVE-2025-68745 | 9.8 CRITICAL | scsi: qla2xxx: Clear cmds after chip reset |
| CVE-2023-54094 | 9.8 CRITICAL | net: prevent skb corruption on frag list segmentation |
| CVE-2023-54090 | 9.8 CRITICAL | ixgbe: Fix panic during XDP_TX with > 64 CPUs |
| CVE-2023-54076 | 9.8 CRITICAL | smb: client: fix missed ses refcounting |
| CVE-2022-50717 | 9.8 CRITICAL | nvmet-tcp: add bounds check on Transfer Tag |
| CVE-2025-68359 | 9.8 CRITICAL | btrfs: fix double free of qgroup record after failure to add delayed ref head |
| CVE-2023-53996 | 9.3 CRITICAL | x86/sev: Make enc_dec_hypercall() accept a size instead of npages |
| CVE-2023-54071 | 8.8 HIGH | wifi: rtw88: use work to update rate to avoid RCU warning |
| CVE-2023-54120 | 8.8 HIGH | Bluetooth: Fix race condition in hidp_session_thread |
| CVE-2023-54043 | 8.8 HIGH | iommufd: Do not add the same hwpt to the ioas->hwpt_list twice |
| CVE-2022-50732 | 8.8 HIGH | staging: rtl8192u: Fix use after free in ieee80211_rx() |
| CVE-2023-54092 | 8.8 HIGH | KVM: s390: pv: fix index value of replaced ASCE |
| CVE-2023-54060 | 8.8 HIGH | iommufd: Set end correctly when doing batch carry |
| CVE-2025-68736 | 8.8 HIGH | landlock: Fix handling of disconnected directories |
| CVE-2023-54040 | 8.8 HIGH | ice: fix wrong fallback logic for FDIR |
| CVE-2023-53986 | 8.6 HIGH | mips: bmips: BCM6358: disable RAC flush for TP1 |
| CVE-2022-50746 | 8.4 HIGH | erofs: validate the extent length for uncompressed pclusters |
Showing top 20 of 322 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
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