CVE-2024-46713 perf/aux: Fix AUX buffer serialization

2024-09-1314:49:13

Linux

www.cve.org

linux kernel

vulnerability

fix

perf/aux buffer

serialization

cve-2024-46713

EPSS

Percentile

10.9%

JSON

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

perf/aux: Fix AUX buffer serialization

Ole reported that event->mmap_mutex is strictly insufficient to
serialize the AUX buffer, add a per RB mutex to fully serialize it.

Note that in the lock order comment the perf_event::mmap_mutex order
was already wrong, that is, it nesting under mmap_lock is not new with
this patch.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/events/core.c",
      "kernel/events/internal.h",
      "kernel/events/ring_buffer.c"
    ],
    "versions": [
      {
        "version": "45bfb2e50471",
        "lessThan": "7882923f1cb8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "45bfb2e50471",
        "lessThan": "52d13d224fdf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "45bfb2e50471",
        "lessThan": "9dc7ad2b6777",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "45bfb2e50471",
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        "versionType": "git"
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      {
        "version": "45bfb2e50471",
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    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/events/core.c",
      "kernel/events/internal.h",
      "kernel/events/ring_buffer.c"
    ],
    "versions": [
      {
        "version": "4.1",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.1",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.226",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.167",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.110",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.51",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.10",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]