ghsa-p299-525g-4h76
Vulnerability from github
Published
2024-11-09 12:30
Modified
2024-11-13 18:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

drm/tests: hdmi: Fix memory leaks in drm_display_mode_from_cea_vic()

modprobe drm_hdmi_state_helper_test and then rmmod it, the following memory leak occurs.

The mode allocated in drm_mode_duplicate() called by drm_display_mode_from_cea_vic() is not freed, which cause the memory leak:

unreferenced object 0xffffff80ccd18100 (size 128):
  comm "kunit_try_catch", pid 1851, jiffies 4295059695
  hex dump (first 32 bytes):
    57 62 00 00 80 02 90 02 f0 02 20 03 00 00 e0 01  Wb........ .....
    ea 01 ec 01 0d 02 00 00 0a 00 00 00 00 00 00 00  ................
  backtrace (crc c2f1aa95):
    [<000000000f10b11b>] kmemleak_alloc+0x34/0x40
    [<000000001cd4cf73>] __kmalloc_cache_noprof+0x26c/0x2f4
    [<00000000f1f3cffa>] drm_mode_duplicate+0x44/0x19c
    [<000000008cbeef13>] drm_display_mode_from_cea_vic+0x88/0x98
    [<0000000019daaacf>] 0xffffffedc11ae69c
    [<000000000aad0f85>] kunit_try_run_case+0x13c/0x3ac
    [<00000000a9210bac>] kunit_generic_run_threadfn_adapter+0x80/0xec
    [<000000000a0b2e9e>] kthread+0x2e8/0x374
    [<00000000bd668858>] ret_from_fork+0x10/0x20
......

Free mode by using drm_kunit_display_mode_from_cea_vic() to fix it.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-50213"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-09T11:15:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/tests: hdmi: Fix memory leaks in drm_display_mode_from_cea_vic()\n\nmodprobe drm_hdmi_state_helper_test and then rmmod it, the following\nmemory leak occurs.\n\nThe `mode` allocated in drm_mode_duplicate() called by\ndrm_display_mode_from_cea_vic() is not freed, which cause the memory leak:\n\n\tunreferenced object 0xffffff80ccd18100 (size 128):\n\t  comm \"kunit_try_catch\", pid 1851, jiffies 4295059695\n\t  hex dump (first 32 bytes):\n\t    57 62 00 00 80 02 90 02 f0 02 20 03 00 00 e0 01  Wb........ .....\n\t    ea 01 ec 01 0d 02 00 00 0a 00 00 00 00 00 00 00  ................\n\t  backtrace (crc c2f1aa95):\n\t    [\u003c000000000f10b11b\u003e] kmemleak_alloc+0x34/0x40\n\t    [\u003c000000001cd4cf73\u003e] __kmalloc_cache_noprof+0x26c/0x2f4\n\t    [\u003c00000000f1f3cffa\u003e] drm_mode_duplicate+0x44/0x19c\n\t    [\u003c000000008cbeef13\u003e] drm_display_mode_from_cea_vic+0x88/0x98\n\t    [\u003c0000000019daaacf\u003e] 0xffffffedc11ae69c\n\t    [\u003c000000000aad0f85\u003e] kunit_try_run_case+0x13c/0x3ac\n\t    [\u003c00000000a9210bac\u003e] kunit_generic_run_threadfn_adapter+0x80/0xec\n\t    [\u003c000000000a0b2e9e\u003e] kthread+0x2e8/0x374\n\t    [\u003c00000000bd668858\u003e] ret_from_fork+0x10/0x20\n\t......\n\nFree `mode` by using drm_kunit_display_mode_from_cea_vic()\nto fix it.",
  "id": "GHSA-p299-525g-4h76",
  "modified": "2024-11-13T18:31:53Z",
  "published": "2024-11-09T12:30:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50213"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bc3fae8a0f22e0e713729b50e2111f6a8c64724"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/add4163aca0d4a86e9fe4aa513865e4237db8aef"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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