ghsa-xgvm-jcp3-352m
Vulnerability from github
Published
2024-11-09 12:30
Modified
2024-11-13 18:31
Details

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

drm/connector: hdmi: Fix memory leak in drm_display_mode_from_cea_vic()

modprobe drm_connector_test and then rmmod drm_connector_test, 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 0xffffff80cb0ee400 (size 128):
  comm "kunit_try_catch", pid 1948, jiffies 4294950339
  hex dump (first 32 bytes):
    14 44 02 00 80 07 d8 07 04 08 98 08 00 00 38 04  .D............8.
    3c 04 41 04 65 04 00 00 05 00 00 00 00 00 00 00  <.A.e...........
  backtrace (crc 90e9585c):
    [<00000000ec42e3d7>] kmemleak_alloc+0x34/0x40
    [<00000000d0ef055a>] __kmalloc_cache_noprof+0x26c/0x2f4
    [<00000000c2062161>] drm_mode_duplicate+0x44/0x19c
    [<00000000f96c74aa>] drm_display_mode_from_cea_vic+0x88/0x98
    [<00000000d8f2c8b4>] 0xffffffdc982a4868
    [<000000005d164dbc>] kunit_try_run_case+0x13c/0x3ac
    [<000000006fb23398>] kunit_generic_run_threadfn_adapter+0x80/0xec
    [<000000006ea56ca0>] kthread+0x2e8/0x374
    [<000000000676063f>] ret_from_fork+0x10/0x20
......

Free mode by using drm_kunit_display_mode_from_cea_vic() to fix it.

Show details on source website


{
   affected: [],
   aliases: [
      "CVE-2024-50214",
   ],
   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/connector: hdmi: Fix memory leak in drm_display_mode_from_cea_vic()\n\nmodprobe drm_connector_test and then rmmod drm_connector_test,\nthe following memory 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 0xffffff80cb0ee400 (size 128):\n\t  comm \"kunit_try_catch\", pid 1948, jiffies 4294950339\n\t  hex dump (first 32 bytes):\n\t    14 44 02 00 80 07 d8 07 04 08 98 08 00 00 38 04  .D............8.\n\t    3c 04 41 04 65 04 00 00 05 00 00 00 00 00 00 00  <.A.e...........\n\t  backtrace (crc 90e9585c):\n\t    [<00000000ec42e3d7>] kmemleak_alloc+0x34/0x40\n\t    [<00000000d0ef055a>] __kmalloc_cache_noprof+0x26c/0x2f4\n\t    [<00000000c2062161>] drm_mode_duplicate+0x44/0x19c\n\t    [<00000000f96c74aa>] drm_display_mode_from_cea_vic+0x88/0x98\n\t    [<00000000d8f2c8b4>] 0xffffffdc982a4868\n\t    [<000000005d164dbc>] kunit_try_run_case+0x13c/0x3ac\n\t    [<000000006fb23398>] kunit_generic_run_threadfn_adapter+0x80/0xec\n\t    [<000000006ea56ca0>] kthread+0x2e8/0x374\n\t    [<000000000676063f>] ret_from_fork+0x10/0x20\n\t......\n\nFree `mode` by using drm_kunit_display_mode_from_cea_vic()\nto fix it.",
   id: "GHSA-xgvm-jcp3-352m",
   modified: "2024-11-13T18:31:53Z",
   published: "2024-11-09T12:30:47Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-50214",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/926163342a2e7595d950e84c17c693b1272bd491",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/df2b00685cd33cd85be8910c7d6d22c4ebbf18bb",
      },
   ],
   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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