CVE-2024-35815 fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion

2024-05-1713:23:20

Linux

www.cve.org

linux kernel vulnerability

fs/aio

iocb_aio_rw

struct aio_kiocb conversion

6.3 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

13.0%

JSON

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

fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion

The first kiocb_set_cancel_fn() argument may point at a struct kiocb
that is not embedded inside struct aio_kiocb. With the current code,
depending on the compiler, the req->ki_ctx read happens either before
the IOCB_AIO_RW test or after that test. Move the req->ki_ctx read such
that it is guaranteed that the IOCB_AIO_RW test happens first.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/aio.c"
    ],
    "versions": [
      {
        "version": "337b543e274f",
        "lessThan": "10ca82aff584",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b4eea7a05ee0",
        "lessThan": "396dbbc18963",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ea1cd64d59f2",
        "lessThan": "94eb0293703c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d7b6fa97ec89",
        "lessThan": "a71cba07783a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "18f614369def",
        "lessThan": "18d5fc3c16cc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e7e23fc5d5fe",
        "lessThan": "c01ed748847f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1dc7d74fe456",
        "lessThan": "5c43d0041e3a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b820de741ae4",
        "lessThan": "961ebd120565",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/aio.c"
    ],
    "versions": [
      {
        "version": "4.19.308",
        "lessThan": "4.19.312",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "5.4.270",
        "lessThan": "5.4.274",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "5.10.211",
        "lessThan": "5.10.215",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "5.15.150",
        "lessThan": "5.15.154",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "6.1.80",
        "lessThan": "6.1.84",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "6.6.19",
        "lessThan": "6.6.24",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "6.7.7",
        "lessThan": "6.7.12",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]