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CVE-2022-50558— regmap-irq: Use the new num_config_regs property in regmap_add_irq_chip_fwnode

EPSS 0.02% · P7
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I. Basic Information for CVE-2022-50558

Vulnerability Information
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Vulnerability Title
regmap-irq: Use the new num_config_regs property in regmap_add_irq_chip_fwnode
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: regmap-irq: Use the new num_config_regs property in regmap_add_irq_chip_fwnode Commit faa87ce9196d ("regmap-irq: Introduce config registers for irq types") added the num_config_regs, then commit 9edd4f5aee84 ("regmap-irq: Deprecate type registers and virtual registers") suggested to replace num_type_reg with it. However, regmap_add_irq_chip_fwnode wasn't modified to use the new property. Later on, commit 255a03bb1bb3 ("ASoC: wcd9335: Convert irq chip to config regs") removed the old num_type_reg property from the WCD9335 driver's struct regmap_irq_chip, causing a null pointer dereference in regmap_irq_set_type when it tried to index d->type_buf as it was never allocated in regmap_add_irq_chip_fwnode: [ 39.199374] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 39.200006] Call trace: [ 39.200014] regmap_irq_set_type+0x84/0x1c0 [ 39.200026] __irq_set_trigger+0x60/0x1c0 [ 39.200040] __setup_irq+0x2f4/0x78c [ 39.200051] request_threaded_irq+0xe8/0x1a0 Use num_config_regs in regmap_add_irq_chip_fwnode instead of num_type_reg, and fall back to it if num_config_regs isn't defined to maintain backward compatibility.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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regmap_add_irq_chip_fwnode未使用num_config_regs属性，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

VendorProductAffected VersionsCPESubscribe
LinuxLinux faa87ce9196dbb074d75bd4aecb8bacf18f19b4e ~ 57bb34330c0fc70bb4ab96399a3c1b80e73e9d49 -
LinuxLinux 6.0 -

II. Public POCs for CVE-2022-50558

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III. Intelligence Information for CVE-2022-50558

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Same Patch Batch · Linux · 2025-10-22 · 67 CVEs total

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CVE-2023-53728posix-timers: Ensure timer ID search-loop limit is valid
CVE-2023-53717wifi: ath9k: Fix potential stack-out-of-bounds write in ath9k_wmi_rsp_callback()
CVE-2023-53715wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex
CVE-2023-53714drm/stm: ltdc: fix late dereference check
CVE-2023-53713arm64: sme: Use STR P to clear FFR context field in streaming SVE mode
CVE-2023-53712ARM: 9317/1: kexec: Make smp stop calls asynchronous
CVE-2023-53711NFS: Fix a potential data corruption
CVE-2023-53716net: fix skb leak in __skb_tstamp_tx()
CVE-2023-53709ring-buffer: Handle race between rb_move_tail and rb_check_pages
CVE-2023-53707drm/amdgpu: Fix integer overflow in amdgpu_cs_pass1
CVE-2023-53708ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects
CVE-2023-53705ipv6: Fix out-of-bounds access in ipv6_find_tlv()
CVE-2023-53706mm/vmemmap/devdax: fix kernel crash when probing devdax devices
CVE-2023-53704clk: imx: clk-imx8mp: improve error handling in imx8mp_clocks_probe()
CVE-2023-53702s390/crypto: use vector instructions only if available for ChaCha20
CVE-2023-53703HID: amd_sfh: Fix for shift-out-of-bounds
CVE-2023-53700media: max9286: Fix memleak in max9286_v4l2_register()

Showing top 20 of 67 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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