CVE-2023-52450 perf/x86/intel/uncore: Fix NULL pointer dereference issue in upi_fill_topology()

2024-02-2216:21:41

Linux

www.cve.org

linux kernel

vulnerability

null pointer dereference

upi_fill_topology

uncore

AI Score

6.2

Confidence

High

EPSS

Percentile

5.1%

JSON

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

perf/x86/intel/uncore: Fix NULL pointer dereference issue in upi_fill_topology()

Get logical socket id instead of physical id in discover_upi_topology()
to avoid out-of-bound access on ‘upi = &type->topology[nid][idx];’ line
that leads to NULL pointer dereference in upi_fill_topology()

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/x86/events/intel/uncore_snbep.c"
    ],
    "versions": [
      {
        "version": "f680b6e6062e",
        "lessThan": "bf1bf09e6b59",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f680b6e6062e",
        "lessThan": "3d6f4a78b104",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f680b6e6062e",
        "lessThan": "1692cf434ba1",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/x86/events/intel/uncore_snbep.c"
    ],
    "versions": [
      {
        "version": "6.2",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.2",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.14",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.2",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]