CVE-2023-52493 bus: mhi: host: Drop chan lock before queuing buffers

2024-02-2915:52:11

Linux

www.cve.org

vulnerability resolution

linux kernel

channel locks

7.6 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

10.4%

JSON

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

bus: mhi: host: Drop chan lock before queuing buffers

Ensure read and write locks for the channel are not taken in succession by
dropping the read lock from parse_xfer_event() such that a callback given
to client can potentially queue buffers and acquire the write lock in that
process. Any queueing of buffers should be done without channel read lock
acquired as it can result in multiple locks and a soft lockup.

[mani: added fixes tag and cc’ed stable]

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/bus/mhi/host/main.c"
    ],
    "versions": [
      {
        "version": "1d3173a3bae7",
        "lessThan": "20a6dea2d1c6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1d3173a3bae7",
        "lessThan": "6e4c84316e2b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1d3173a3bae7",
        "lessThan": "3c5ec66b4b3f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1d3173a3bae7",
        "lessThan": "eaefb9464031",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1d3173a3bae7",
        "lessThan": "b8eff20d8709",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1d3173a3bae7",
        "lessThan": "01bd694ac2f6",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/bus/mhi/host/main.c"
    ],
    "versions": [
      {
        "version": "5.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.7",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.210",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.149",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.76",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.15",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.3",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]