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CVE-2022-50078— tracing/eprobes: Do not allow eprobes to use $stack, or % for regs

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eprobes允许使用无效寄存器名称导致空指针取消引用。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.24% · P15 Updated May 13, 2026

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 8

Vendor	Product	Version Range	Status
Linux	Linux	`7491e2c442781a1860181adb5ab472a52075f393< ba53c21ce9773743b8e0a8ada048c96ff2d55c67`	affected
		`7491e2c442781a1860181adb5ab472a52075f393< 7c262114a576d94c0ced80e232bbb17391a55908`	affected
		`7491e2c442781a1860181adb5ab472a52075f393< 2673c60ee67e71f2ebe34386e62d348f71edee47`	affected
		`5.15`	affected
		`< 5.15`	unaffected
		`5.15.63≤ 5.15.*`	unaffected
		`5.19.4≤ 5.19.*`	unaffected
		`6.0≤ *`	unaffected

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I. Basic Information for CVE-2022-50078

Vulnerability Information

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Vulnerability Title

tracing/eprobes: Do not allow eprobes to use $stack, or % for regs

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: tracing/eprobes: Do not allow eprobes to use $stack, or % for regs While playing with event probes (eprobes), I tried to see what would happen if I attempted to retrieve the instruction pointer (%rip) knowing that event probes do not use pt_regs. The result was: BUG: kernel NULL pointer dereference, address: 0000000000000024 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 1 PID: 1847 Comm: trace-cmd Not tainted 5.19.0-rc5-test+ #309 Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01 v03.03 07/14/2016 RIP: 0010:get_event_field.isra.0+0x0/0x50 Code: ff 48 c7 c7 c0 8f 74 a1 e8 3d 8b f5 ff e8 88 09 f6 ff 4c 89 e7 e8 50 6a 13 00 48 89 ef 5b 5d 41 5c 41 5d e9 42 6a 13 00 66 90 <48> 63 47 24 8b 57 2c 48 01 c6 8b 47 28 83 f8 02 74 0e 83 f8 04 74 RSP: 0018:ffff916c394bbaf0 EFLAGS: 00010086 RAX: ffff916c854041d8 RBX: ffff916c8d9fbf50 RCX: ffff916c255d2000 RDX: 0000000000000000 RSI: ffff916c255d2008 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff916c3a2a0c08 R09: ffff916c394bbda8 R10: 0000000000000000 R11: 0000000000000000 R12: ffff916c854041d8 R13: ffff916c854041b0 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff916c9ea40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000024 CR3: 000000011b60a002 CR4: 00000000001706e0 Call Trace: <TASK> get_eprobe_size+0xb4/0x640 ? __mod_node_page_state+0x72/0xc0 __eprobe_trace_func+0x59/0x1a0 ? __mod_lruvec_page_state+0xaa/0x1b0 ? page_remove_file_rmap+0x14/0x230 ? page_remove_rmap+0xda/0x170 event_triggers_call+0x52/0xe0 trace_event_buffer_commit+0x18f/0x240 trace_event_raw_event_sched_wakeup_template+0x7a/0xb0 try_to_wake_up+0x260/0x4c0 __wake_up_common+0x80/0x180 __wake_up_common_lock+0x7c/0xc0 do_notify_parent+0x1c9/0x2a0 exit_notify+0x1a9/0x220 do_exit+0x2ba/0x450 do_group_exit+0x2d/0x90 __x64_sys_exit_group+0x14/0x20 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Obviously this is not the desired result. Move the testing for TPARG_FL_TPOINT which is only used for event probes to the top of the "$" variable check, as all the other variables are not used for event probes. Also add a check in the register parsing "%" to fail if an event probe is used.

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

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	7491e2c442781a1860181adb5ab472a52075f393 ~ ba53c21ce9773743b8e0a8ada048c96ff2d55c67	-
Linux	Linux	5.15	-

II. Public POCs for CVE-2022-50078

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2022-50078

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https://www.cve.org/CVERecord?id=CVE-2022-50078

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-2022-49939	7.8 HIGH	binder: fix UAF of ref->proc caused by race condition
CVE-2022-50022	7.8 HIGH	drivers:md:fix a potential use-after-free bug
CVE-2022-50028	7.8 HIGH	gadgetfs: ep_io - wait until IRQ finishes
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-2022-50078

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

CVE-2022-50078— tracing/eprobes: Do not allow eprobes to use $stack, or % for regs

Quick assessment

Possible ATT&CK Techniques 1 AI

Affected Version Matrix 8

I. Basic Information for CVE-2022-50078

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-2022-50078

III. Intelligence Information for CVE-2022-50078

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

IV. Related Vulnerabilities

V. Comments for CVE-2022-50078

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