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CVE-2022-50094— spmi: trace: fix stack-out-of-bound access in SPMI tracing functions

AI Predicted 5.5 Difficulty: Hard EPSS 0.22% · P13

Possible ATT&CK Techniques 1AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 20

VendorProductVersion RangeStatus
LinuxLinuxa9fce374815d8ab94a3e6259802a944e2cc21408< 80f7c93e573ea9f524924bb529c2af8cb28b1c43affected
a9fce374815d8ab94a3e6259802a944e2cc21408< dc6033a7761254e5a5ba7df36b64db787a53313caffected
a9fce374815d8ab94a3e6259802a944e2cc21408< ac730c72bddc889f5610d51d8a7abf425e08da1aaffected
a9fce374815d8ab94a3e6259802a944e2cc21408< 37690cb8662cec672cacda19e6e4fd2ca7b13f0baffected
a9fce374815d8ab94a3e6259802a944e2cc21408< dd02510fb43168310abfd0b9ccf49993a722fb91affected
a9fce374815d8ab94a3e6259802a944e2cc21408< 1e0ca3d809c36ad3d1f542917718fc22ec6316e7affected
a9fce374815d8ab94a3e6259802a944e2cc21408< bcc1b6b1ed3f42ed25858c1f1eb24a2f741db93faffected
a9fce374815d8ab94a3e6259802a944e2cc21408< 504090815c1ad3fd3fa34618b54d706727f8911caffected
… +12 more rows
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I. Basic Information for CVE-2022-50094

Vulnerability Information
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Vulnerability Title
spmi: trace: fix stack-out-of-bound access in SPMI tracing functions
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: spmi: trace: fix stack-out-of-bound access in SPMI tracing functions trace_spmi_write_begin() and trace_spmi_read_end() both call memcpy() with a length of "len + 1". This leads to one extra byte being read beyond the end of the specified buffer. Fix this out-of-bound memory access by using a length of "len" instead. Here is a KASAN log showing the issue: BUG: KASAN: stack-out-of-bounds in trace_event_raw_event_spmi_read_end+0x1d0/0x234 Read of size 2 at addr ffffffc0265b7540 by task thermal@2.0-ser/1314 ... Call trace: dump_backtrace+0x0/0x3e8 show_stack+0x2c/0x3c dump_stack_lvl+0xdc/0x11c print_address_description+0x74/0x384 kasan_report+0x188/0x268 kasan_check_range+0x270/0x2b0 memcpy+0x90/0xe8 trace_event_raw_event_spmi_read_end+0x1d0/0x234 spmi_read_cmd+0x294/0x3ac spmi_ext_register_readl+0x84/0x9c regmap_spmi_ext_read+0x144/0x1b0 [regmap_spmi] _regmap_raw_read+0x40c/0x754 regmap_raw_read+0x3a0/0x514 regmap_bulk_read+0x418/0x494 adc5_gen3_poll_wait_hs+0xe8/0x1e0 [qcom_spmi_adc5_gen3] ... __arm64_sys_read+0x4c/0x60 invoke_syscall+0x80/0x218 el0_svc_common+0xec/0x1c8 ... addr ffffffc0265b7540 is located in stack of task thermal@2.0-ser/1314 at offset 32 in frame: adc5_gen3_poll_wait_hs+0x0/0x1e0 [qcom_spmi_adc5_gen3] this frame has 1 object: [32, 33) 'status' Memory state around the buggy address: ffffffc0265b7400: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 ffffffc0265b7480: 04 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 >ffffffc0265b7500: 00 00 00 00 f1 f1 f1 f1 01 f3 f3 f3 00 00 00 00 ^ ffffffc0265b7580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffffc0265b7600: f1 f1 f1 f1 01 f2 07 f2 f2 f2 01 f3 00 00 00 00 ==================================================================
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spmi跟踪函数中memcpy长度参数错误，可能导致栈溢出。
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 a9fce374815d8ab94a3e6259802a944e2cc21408 ~ 80f7c93e573ea9f524924bb529c2af8cb28b1c43 -
LinuxLinux 4.3 -

II. Public POCs for CVE-2022-50094

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III. Intelligence Information for CVE-2022-50094

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

CVE-2025-380759.8 CRITICALscsi: target: iscsi: Fix timeout on deleted connection
CVE-2022-500988.8 HIGHscsi: qla2xxx: Fix crash due to stale SRB access around I/O timeouts
CVE-2025-380528.8 HIGHnet/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done
CVE-2022-499348.8 HIGHwifi: mac80211: Fix UAF in ieee80211_scan_rx()
CVE-2022-501648.8 HIGHwifi: iwlwifi: mvm: fix double list_add at iwl_mvm_mac_wake_tx_queue
CVE-2025-380168.8 HIGHHID: bpf: abort dispatch if device destroyed
CVE-2025-380748.8 HIGHvhost-scsi: protect vq->log_used with vq->mutex
CVE-2022-499748.8 HIGHHID: nintendo: fix rumble worker null pointer deref
CVE-2022-499688.0 HIGHieee802154/adf7242: defer destroy_workqueue call
CVE-2022-499397.8 HIGHbinder: fix UAF of ref->proc caused by race condition
CVE-2022-500227.8 HIGHdrivers:md:fix a potential use-after-free bug
CVE-2022-500287.8 HIGHgadgetfs: ep_io - wait until IRQ finishes
CVE-2022-499357.8 HIGHdma-buf/dma-resv: check if the new fence is really later
CVE-2025-380827.8 HIGHgpio: virtuser: fix potential out-of-bound write
CVE-2022-501827.8 HIGHmedia: imx-jpeg: Align upwards buffer size
CVE-2025-380807.8 HIGHdrm/amd/display: Increase block_sequence array size
CVE-2025-380797.8 HIGHcrypto: algif_hash - fix double free in hash_accept
CVE-2025-380607.8 HIGHbpf: copy_verifier_state() should copy 'loop_entry' field
CVE-2025-380627.8 HIGHgenirq/msi: Store the IOMMU IOVA directly in msi_desc instead of iommu_cookie
CVE-2022-501017.8 HIGHvideo: fbdev: vt8623fb: Check the size of screen before memset_io()

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50094

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