CVE-2024-36887 e1000e: change usleep_range to udelay in PHY mdic access

2024-05-3015:28:55

Linux

www.cve.org

linux kernel

vulnerability

e1000e

usleep_range

udelay

phy mdic access

kernel panic

vpro systems

6.1 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.5%

JSON

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

e1000e: change usleep_range to udelay in PHY mdic access

This is a partial revert of commit 6dbdd4de0362 (“e1000e: Workaround
for sporadic MDI error on Meteor Lake systems”). The referenced commit
used usleep_range inside the PHY access routines, which are sometimes
called from an atomic context. This can lead to a kernel panic in some
scenarios, such as cable disconnection and reconnection on vPro systems.

Solve this by changing the usleep_range calls back to udelay.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/intel/e1000e/phy.c"
    ],
    "versions": [
      {
        "version": "1d16cd91cd31",
        "lessThan": "f8a139656c95",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0a4e3c2d976a",
        "lessThan": "950d5226cd6b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6dbdd4de0362",
        "lessThan": "387f295cb215",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/ethernet/intel/e1000e/phy.c"
    ],
    "versions": [
      {
        "version": "6.6.26",
        "lessThan": "6.6.31",
        "status": "affected",
        "versionType": "custom"
      },
      {
        "version": "6.8.5",
        "lessThan": "6.8.10",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]