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CVE-2022-50564— s390/netiucv: Fix return type of netiucv_tx()

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netiucv_tx函数返回类型不匹配，可能导致内核恐慌或线程终止。

AI Predicted 3.3 Difficulty: Trivial EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux dc1f8bf68b311b1537cb65893430b6796118498a< f13d870fce90f01cf930bfaffecc8185ae0be21c affected
dc1f8bf68b311b1537cb65893430b6796118498a< eccc88c0efe407e579291792ad07a7dedc0f63f0 affected
dc1f8bf68b311b1537cb65893430b6796118498a< 85d392710275355425df8618ccbebbc336f5acc5 affected
dc1f8bf68b311b1537cb65893430b6796118498a< 4bee3c75d5bf7c2b5dc0b520410eb40449e5da31 affected
dc1f8bf68b311b1537cb65893430b6796118498a< 3ac0217ca9186c2f9af9a0113a331a42aa847894 affected
dc1f8bf68b311b1537cb65893430b6796118498a< dfbf0122ea1b9b3e73fa22c8ff6bd888935c54fc affected
dc1f8bf68b311b1537cb65893430b6796118498a< e7a849f740e3576e79cba403697e916f4c3a6f12 affected
dc1f8bf68b311b1537cb65893430b6796118498a< d034fa43af92fc46a81d882f46d9cc3e4ffdbbcc affected
… +12 more rows
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I. Basic Information for CVE-2022-50564

Vulnerability Information
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Vulnerability Title
s390/netiucv: Fix return type of netiucv_tx()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: s390/netiucv: Fix return type of netiucv_tx() With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. A proposed warning in clang aims to catch these at compile time, which reveals: drivers/s390/net/netiucv.c:1854:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict] .ndo_start_xmit = netiucv_tx, ^~~~~~~~~~ ->ndo_start_xmit() in 'struct net_device_ops' expects a return type of 'netdev_tx_t', not 'int'. Adjust the return type of netiucv_tx() to match the prototype's to resolve the warning and potential CFI failure, should s390 select ARCH_SUPPORTS_CFI_CLANG in the future. Additionally, while in the area, remove a comment block that is no longer relevant.
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netiucv_tx函数返回类型不匹配，可能导致内核恐慌或线程终止。
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 dc1f8bf68b311b1537cb65893430b6796118498a ~ f13d870fce90f01cf930bfaffecc8185ae0be21c -
Linux Linux 2.6.32 -

II. Public POCs for CVE-2022-50564

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III. Intelligence Information for CVE-2022-50564

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Patches & Fixes for CVE-2022-50564 (9)

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

CVE-2023-53711 8.2 HIGH NFS: Fix a potential data corruption
CVE-2023-53705 8.2 HIGH ipv6: Fix out-of-bounds access in ipv6_find_tlv()
CVE-2023-53698 7.8 HIGH xsk: fix refcount underflow in error path
CVE-2023-53692 7.8 HIGH ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline
CVE-2023-53718 7.8 HIGH ring-buffer: Do not swap cpu_buffer during resize process
CVE-2022-50569 7.8 HIGH xfrm: Update ipcomp_scratches with NULL when freed
CVE-2022-50570 7.8 HIGH platform/chrome: fix memory corruption in ioctl
CVE-2022-50567 7.8 HIGH fs: jfs: fix shift-out-of-bounds in dbAllocAG
CVE-2023-53695 7.8 HIGH udf: Detect system inodes linked into directory hierarchy
CVE-2023-53707 7.8 HIGH drm/amdgpu: Fix integer overflow in amdgpu_cs_pass1
CVE-2022-50581 7.8 HIGH hfs: fix OOB Read in __hfs_brec_find
CVE-2023-53729 7.8 HIGH soc: qcom: qmi_encdec: Restrict string length in decode
CVE-2023-53713 7.8 HIGH arm64: sme: Use STR P to clear FFR context field in streaming SVE mode
CVE-2023-53726 7.1 HIGH arm64: csum: Fix OoB access in IP checksum code for negative lengths
CVE-2023-53704 clk: imx: clk-imx8mp: improve error handling in imx8mp_clocks_probe()
CVE-2023-53706 mm/vmemmap/devdax: fix kernel crash when probing devdax devices
CVE-2023-53714 drm/stm: ltdc: fix late dereference check
CVE-2023-53708 ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects
CVE-2023-53712 ARM: 9317/1: kexec: Make smp stop calls asynchronous
CVE-2023-53719 serial: arc_uart: fix of_iomap leak in `arc_serial_probe`

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50564

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