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CVE-2022-50008— kprobes: don't call disarm_kprobe() for disabled kprobes

Quick assessment

Affected

Linux Linux

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于禁用kprobes时错误调用disarm_kprobe。

AI Predicted 5.9 Difficulty: Moderate EPSS 0.25% · P16 Updated May 13, 2026

Possible ATT&CK Techniques 2 AI

T1055 · Process Injection T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

Vendor	Product	Version Range	Status
Linux	Linux	`69d54b916d83872a0a327778a01af2a096923f59< 19cd630712e7c13a3dedfc6986a9b983fed6fd98`	affected
		`69d54b916d83872a0a327778a01af2a096923f59< 6f3c1bc22fc2165461883f506b4d2c3594bd7137`	affected
		`69d54b916d83872a0a327778a01af2a096923f59< fc91d2db55acdaf0c0075b624e572d3520ca3bc3`	affected
		`69d54b916d83872a0a327778a01af2a096923f59< b474ff1b20951f1eac75d100a93861e6da2b522b`	affected
		`69d54b916d83872a0a327778a01af2a096923f59< 744b0d3080709a172f0408aedabd1cedd24c2ee6`	affected
		`69d54b916d83872a0a327778a01af2a096923f59< 55c7a91527343d2e0b5647cc308c6e04ddd2aa52`	affected
		`69d54b916d83872a0a327778a01af2a096923f59< bc3188d8a3b8c08c306a4c851ddb2c92ba4599ca`	affected
		`69d54b916d83872a0a327778a01af2a096923f59< 9c80e79906b4ca440d09e7f116609262bb747909`	affected
… +10 more rows

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I. Basic Information for CVE-2022-50008

Vulnerability Information

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Vulnerability Title

kprobes: don't call disarm_kprobe() for disabled kprobes

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: kprobes: don't call disarm_kprobe() for disabled kprobes The assumption in __disable_kprobe() is wrong, and it could try to disarm an already disarmed kprobe and fire the WARN_ONCE() below. [0] We can easily reproduce this issue. 1. Write 0 to /sys/kernel/debug/kprobes/enabled. # echo 0 > /sys/kernel/debug/kprobes/enabled 2. Run execsnoop. At this time, one kprobe is disabled. # /usr/share/bcc/tools/execsnoop & [1] 2460 PCOMM PID PPID RET ARGS # cat /sys/kernel/debug/kprobes/list ffffffff91345650 r __x64_sys_execve+0x0 [FTRACE] ffffffff91345650 k __x64_sys_execve+0x0 [DISABLED][FTRACE] 3. Write 1 to /sys/kernel/debug/kprobes/enabled, which changes kprobes_all_disarmed to false but does not arm the disabled kprobe. # echo 1 > /sys/kernel/debug/kprobes/enabled # cat /sys/kernel/debug/kprobes/list ffffffff91345650 r __x64_sys_execve+0x0 [FTRACE] ffffffff91345650 k __x64_sys_execve+0x0 [DISABLED][FTRACE] 4. Kill execsnoop, when __disable_kprobe() calls disarm_kprobe() for the disabled kprobe and hits the WARN_ONCE() in __disarm_kprobe_ftrace(). # fg /usr/share/bcc/tools/execsnoop ^C Actually, WARN_ONCE() is fired twice, and __unregister_kprobe_top() misses some cleanups and leaves the aggregated kprobe in the hash table. Then, __unregister_trace_kprobe() initialises tk->rp.kp.list and creates an infinite loop like this. aggregated kprobe.list -> kprobe.list -. ^ | '.__.' In this situation, these commands fall into the infinite loop and result in RCU stall or soft lockup. cat /sys/kernel/debug/kprobes/list : show_kprobe_addr() enters into the infinite loop with RCU. /usr/share/bcc/tools/execsnoop : warn_kprobe_rereg() holds kprobe_mutex, and __get_valid_kprobe() is stuck in the loop. To avoid the issue, make sure we don't call disarm_kprobe() for disabled kprobes. [0] Failed to disarm kprobe-ftrace at __x64_sys_execve+0x0/0x40 (error -2) WARNING: CPU: 6 PID: 2460 at kernel/kprobes.c:1130 __disarm_kprobe_ftrace.isra.19 (kernel/kprobes.c:1129) Modules linked in: ena CPU: 6 PID: 2460 Comm: execsnoop Not tainted 5.19.0+ #28 Hardware name: Amazon EC2 c5.2xlarge/, BIOS 1.0 10/16/2017 RIP: 0010:__disarm_kprobe_ftrace.isra.19 (kernel/kprobes.c:1129) Code: 24 8b 02 eb c1 80 3d c4 83 f2 01 00 75 d4 48 8b 75 00 89 c2 48 c7 c7 90 fa 0f 92 89 04 24 c6 05 ab 83 01 e8 e4 94 f0 ff <0f> 0b 8b 04 24 eb b1 89 c6 48 c7 c7 60 fa 0f 92 89 04 24 e8 cc 94 RSP: 0018:ffff9e6ec154bd98 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffffff930f7b00 RCX: 0000000000000001 RDX: 0000000080000001 RSI: ffffffff921461c5 RDI: 00000000ffffffff RBP: ffff89c504286da8 R08: 0000000000000000 R09: c0000000fffeffff R10: 0000000000000000 R11: ffff9e6ec154bc28 R12: ffff89c502394e40 R13: ffff89c502394c00 R14: ffff9e6ec154bc00 R15: 0000000000000000 FS: 00007fe800398740(0000) GS:ffff89c812d80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00057f010 CR3: 0000000103b54006 CR4: 00000000007706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <TASK> __disable_kprobe (kernel/kprobes.c:1716) disable_kprobe (kernel/kprobes.c:2392) __disable_trace_kprobe (kernel/trace/trace_kprobe.c:340) disable_trace_kprobe (kernel/trace/trace_kprobe.c:429) perf_trace_event_unreg.isra.2 (./include/linux/tracepoint.h:93 kernel/trace/trace_event_perf.c:168) perf_kprobe_destroy (kernel/trace/trace_event_perf.c:295) _free_event (kernel/events/core.c:4971) perf_event_release_kernel (kernel/events/core.c:5176) perf_release (kernel/events/core.c:5186) __fput (fs/file_table.c:321) task_work_run (./include/linux/ ---truncated---

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，该漏洞源于禁用kprobes时错误调用disarm_kprobe。

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

Vendor	Product	Affected Versions	CPE	Subscribe
Linux	Linux	69d54b916d83872a0a327778a01af2a096923f59 ~ 19cd630712e7c13a3dedfc6986a9b983fed6fd98	-
Linux	Linux	4.0	-

II. Public POCs for CVE-2022-50008

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2022-50008

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https://www.cve.org/CVERecord?id=CVE-2022-50008

Same Patch Batch · Linux · 2025-06-18 · 362 CVEs total

CVE-2025-38075	9.8 CRITICAL	scsi: target: iscsi: Fix timeout on deleted connection
CVE-2022-50098	8.8 HIGH	scsi: qla2xxx: Fix crash due to stale SRB access around I/O timeouts
CVE-2025-38052	8.8 HIGH	net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done
CVE-2022-49934	8.8 HIGH	wifi: mac80211: Fix UAF in ieee80211_scan_rx()
CVE-2022-50164	8.8 HIGH	wifi: iwlwifi: mvm: fix double list_add at iwl_mvm_mac_wake_tx_queue
CVE-2025-38016	8.8 HIGH	HID: bpf: abort dispatch if device destroyed
CVE-2025-38074	8.8 HIGH	vhost-scsi: protect vq->log_used with vq->mutex
CVE-2022-49974	8.8 HIGH	HID: nintendo: fix rumble worker null pointer deref
CVE-2022-49968	8.0 HIGH	ieee802154/adf7242: defer destroy_workqueue call
CVE-2022-50028	7.8 HIGH	gadgetfs: ep_io - wait until IRQ finishes
CVE-2022-49950	7.8 HIGH	misc: fastrpc: fix memory corruption on open
CVE-2022-49939	7.8 HIGH	binder: fix UAF of ref->proc caused by race condition
CVE-2022-49935	7.8 HIGH	dma-buf/dma-resv: check if the new fence is really later
CVE-2025-38082	7.8 HIGH	gpio: virtuser: fix potential out-of-bound write
CVE-2022-50182	7.8 HIGH	media: imx-jpeg: Align upwards buffer size
CVE-2025-38080	7.8 HIGH	drm/amd/display: Increase block_sequence array size
CVE-2025-38079	7.8 HIGH	crypto: algif_hash - fix double free in hash_accept
CVE-2025-38060	7.8 HIGH	bpf: copy_verifier_state() should copy 'loop_entry' field
CVE-2025-38062	7.8 HIGH	genirq/msi: Store the IOMMU IOVA directly in msi_desc instead of iommu_cookie
CVE-2022-50101	7.8 HIGH	video: fbdev: vt8623fb: Check the size of screen before memset_io()

Showing top 20 of 362 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux

V. Comments for CVE-2022-50008

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2022-50008— kprobes: don't call disarm_kprobe() for disabled kprobes

Quick assessment

Possible ATT&CK Techniques 2 AI

Affected Version Matrix 18

I. Basic Information for CVE-2022-50008

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2022-50008

III. Intelligence Information for CVE-2022-50008

Same Patch Batch · Linux · 2025-06-18 · 362 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2022-50008

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