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CVE-2022-49832— pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map

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pinctrl_dt_to_map中未处理kasprintf失败情况，可能导致空指针取消引用。

AI Predicted 4.4 Difficulty: Hard EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 57291ce295c0aca738dd284c4a9c591c09ebee71< aaf552c5d53abe4659176e099575fe870d2e4768 affected
57291ce295c0aca738dd284c4a9c591c09ebee71< b4d9f55cd38435358bc16d580612bc0d798d7b4c affected
57291ce295c0aca738dd284c4a9c591c09ebee71< a988dcd3dd9e691c5ccc3324b209688f3b5453e9 affected
57291ce295c0aca738dd284c4a9c591c09ebee71< 040f726fecd88121f3b95e70369785ad452dddf9 affected
57291ce295c0aca738dd284c4a9c591c09ebee71< 777430aa4ddccaa5accec6db90ffc1d47f00d471 affected
57291ce295c0aca738dd284c4a9c591c09ebee71< 97e5b508e96176f1a73888ed89df396d7041bfcb affected
57291ce295c0aca738dd284c4a9c591c09ebee71< 5834a3a98cd266ad35a229923c0adbd0addc8d68 affected
57291ce295c0aca738dd284c4a9c591c09ebee71< 91d5c5060ee24fe8da88cd585bb43b843d2f0dce affected
… +10 more rows
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I. Basic Information for CVE-2022-49832

Vulnerability Information
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Vulnerability Title
pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map Here is the BUG report by KASAN about null pointer dereference: BUG: KASAN: null-ptr-deref in strcmp+0x2e/0x50 Read of size 1 at addr 0000000000000000 by task python3/2640 Call Trace: strcmp __of_find_property of_find_property pinctrl_dt_to_map kasprintf() would return NULL pointer when kmalloc() fail to allocate. So directly return ENOMEM, if kasprintf() return NULL pointer.
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pinctrl_dt_to_map中未处理kasprintf失败情况，可能导致空指针取消引用。
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 57291ce295c0aca738dd284c4a9c591c09ebee71 ~ aaf552c5d53abe4659176e099575fe870d2e4768 -
Linux Linux 3.5 -

II. Public POCs for CVE-2022-49832

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III. Intelligence Information for CVE-2022-49832

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Patches & Fixes for CVE-2022-49832 (8)

Same Patch Batch · Linux · 2025-05-01 · 245 CVEs total

CVE-2025-37750 9.8 CRITICAL smb: client: fix UAF in decryption with multichannel
CVE-2025-37778 9.8 CRITICAL ksmbd: Fix dangling pointer in krb_authenticate
CVE-2022-49770 9.8 CRITICAL ceph: avoid putting the realm twice when decoding snaps fails
CVE-2022-49931 8.8 HIGH IB/hfi1: Correctly move list in sc_disable()
CVE-2025-37776 8.8 HIGH ksmbd: fix use-after-free in smb_break_all_levII_oplock()
CVE-2025-37777 8.8 HIGH ksmbd: fix use-after-free in __smb2_lease_break_noti()
CVE-2025-37790 8.8 HIGH net: mctp: Set SOCK_RCU_FREE
CVE-2022-49910 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu
CVE-2022-49886 8.4 HIGH x86/tdx: Panic on bad configs that #VE on "private" memory access
CVE-2025-23159 8.4 HIGH media: venus: hfi: add a check to handle OOB in sfr region
CVE-2025-37749 8.2 HIGH net: ppp: Add bound checking for skb data on ppp_sync_txmung
CVE-2025-37774 7.8 HIGH slab: ensure slab->obj_exts is clear in a newly allocated slab page
CVE-2025-37789 7.8 HIGH net: openvswitch: fix nested key length validation in the set() action
CVE-2025-37779 7.8 HIGH lib/iov_iter: fix to increase non slab folio refcount
CVE-2022-49920 7.8 HIGH netfilter: nf_tables: netlink notifier might race to release objects
CVE-2022-49919 7.8 HIGH netfilter: nf_tables: release flow rule object from commit path
CVE-2025-37756 7.8 HIGH net: tls: explicitly disallow disconnect
CVE-2025-37761 7.8 HIGH drm/xe: Fix an out-of-bounds shift when invalidating TLB
CVE-2025-37763 7.8 HIGH drm/imagination: take paired job reference
CVE-2025-23141 7.8 HIGH KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses

Showing top 20 of 245 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux