CVE-2022-48780

2024-07-1612:15:03

Linux

web.nvd.nist.gov

linux kernel

net/smc

vulnerability

callback functions

overwrite

loop call

fix

cve-2022-48780

AI Score

6.6

Confidence

Low

EPSS

Percentile

16.0%

JSON

In the Linux kernel, the following vulnerability has been resolved:

net/smc: Avoid overwriting the copies of clcsock callback functions

The callback functions of clcsock will be saved and replaced during
the fallback. But if the fallback happens more than once, then the
copies of these callback functions will be overwritten incorrectly,
resulting in a loop call issue:

clcsk->sk_error_report
|- smc_fback_error_report() <------------------------------|
|- smc_fback_forward_wakeup() | (loop)
|- clcsock_callback() (incorrectly overwritten) |
|- smc->clcsk_error_report() ------------------|

So this patch fixes the issue by saving these function pointers only
once in the fallback and avoiding overwriting.

Affected configurations

Vulners

Node

linuxlinux_kernelRange5.15.22–5.15.25

linuxlinux_kernelRange5.16.8–5.16.11

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/smc/af_smc.c"
    ],
    "versions": [
      {
        "version": "0ef6049f6649",
        "lessThan": "7de7ba7a8bd4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "504078fbe9dd",
        "lessThan": "f00b6c976ae0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "341adeec9ada",
        "lessThan": "1de9770d121e",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/smc/af_smc.c"
    ],
    "versions": [
      {
        "version": "5.15.22",
        "lessThan": "5.15.25",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "5.16.8",
        "lessThan": "5.16.11",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]