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CVE-2022-50728— s390/lcs: Fix return type of lcs_start_xmit()

AI Predicted 7.5 Difficulty: Easy EPSS 0.24% · P15

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 20

VendorProductVersion RangeStatus
LinuxLinuxdc1f8bf68b311b1537cb65893430b6796118498a< 7b4da3fcd513b8e67823eb80da37aad99b3339c1affected
dc1f8bf68b311b1537cb65893430b6796118498a< d49cc2b705711fb8fb849e7c660929b2100360b7affected
dc1f8bf68b311b1537cb65893430b6796118498a< e684215d8a903752e2b0cc946517fb61e57a880aaffected
dc1f8bf68b311b1537cb65893430b6796118498a< 20022d551f2064a194d8e0acb6cd7a85094a17b2affected
dc1f8bf68b311b1537cb65893430b6796118498a< ebc3c77785dc8b5b626309c0032a38fbb139287aaffected
dc1f8bf68b311b1537cb65893430b6796118498a< 5ad774fb823c24bbeb21a15a67103ea7a6f5b928affected
dc1f8bf68b311b1537cb65893430b6796118498a< 69669820844f81a77b6db24b86581320ae4d17afaffected
dc1f8bf68b311b1537cb65893430b6796118498a< cda74cdc280ba35c8993e7517bac5c257ff36f18affected
… +12 more rows
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I. Basic Information for CVE-2022-50728

Vulnerability Information
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Vulnerability Title
s390/lcs: Fix return type of lcs_start_xmit()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: s390/lcs: Fix return type of lcs_start_xmit() 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/lcs.c:2090:21: 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 = lcs_start_xmit, ^~~~~~~~~~~~~~ drivers/s390/net/lcs.c:2097:21: 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 = lcs_start_xmit, ^~~~~~~~~~~~~~ ->ndo_start_xmit() in 'struct net_device_ops' expects a return type of 'netdev_tx_t', not 'int'. Adjust the return type of lcs_start_xmit() to match the prototype's to resolve the warning and potential CFI failure, should s390 select ARCH_SUPPORTS_CFI_CLANG in the future.
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lcs_start_xmit函数返回类型不匹配。
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 dc1f8bf68b311b1537cb65893430b6796118498a ~ 7b4da3fcd513b8e67823eb80da37aad99b3339c1 -
LinuxLinux 2.6.32 -

II. Public POCs for CVE-2022-50728

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III. Intelligence Information for CVE-2022-50728

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Other References for CVE-2022-50728 (5)

Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total

CVE-2022-50755udf: Avoid double brelse() in udf_rename()
CVE-2022-50765RISC-V: kexec: Fix memory leak of elf header buffer
CVE-2022-50764ipv6/sit: use DEV_STATS_INC() to avoid data-races
CVE-2022-50763crypto: marvell/octeontx - prevent integer overflows
CVE-2022-50762fs/ntfs3: Avoid UBSAN error on true_sectors_per_clst()
CVE-2022-50760drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios()
CVE-2022-50761x86/xen: Fix memory leak in xen_init_lock_cpu()
CVE-2022-50759media: i2c: ov5648: Free V4L2 fwnode data on unbind
CVE-2022-50758staging: vt6655: fix potential memory leak
CVE-2022-50756nvme-pci: fix mempool alloc size
CVE-2022-50757media: camss: Clean up received buffers on failed start of streaming
CVE-2022-50749acct: fix potential integer overflow in encode_comp_t()
CVE-2022-50746erofs: validate the extent length for uncompressed pclusters
CVE-2022-50747hfs: Fix OOB Write in hfs_asc2mac
CVE-2022-50748ipc: mqueue: fix possible memory leak in init_mqueue_fs()
CVE-2022-50750drm/panel/panel-sitronix-st7701: Remove panel on DSI attach failure
CVE-2022-50752md/raid5: Remove unnecessary bio_put() in raid5_read_one_chunk()
CVE-2022-50753f2fs: fix to do sanity check on summary info
CVE-2022-50754apparmor: fix a memleak in multi_transaction_new()
CVE-2022-50766btrfs: set generation before calling btrfs_clean_tree_block in btrfs_init_new_buffer

Showing top 20 of 322 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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