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    <lastBuildDate>Fri, 02 Oct 2026 14:10:24 +0000</lastBuildDate>
    <item>
      <title>CVE-2022-50751 — configfs: fix possible memory leak in configfs_create_dir()</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2022-50751</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;configfs: fix possible memory leak in configfs_create_dir()&lt;/p&gt;
&lt;p&gt;kmemleak reported memory leaks in configfs_create_dir():&lt;/p&gt;
&lt;p&gt;unreferenced object 0xffff888009f6af00 (size 192):
  comm &amp;#34;modprobe&amp;#34;, pid 3777, jiffies 4295537735 (age 233.784s)
  backtrace:
    kmem_cache_alloc (mm/slub.c:3250 mm/slub.c:3256 mm/slub.c:3263 mm/slub.c:3273)
    new_fragment (./include/linux/slab.h:600 fs/configfs/dir.c:163)
    configfs_register_subsystem (fs/configfs/dir.c:1857)
    basic_write (drivers/hwtracing/stm/p_basic.c:14) stm_p_basic
    do_one_initcall (init/main.c:1296)
    do_init_module (kernel/module/main.c:2455)
    ...&lt;/p&gt;
&lt;p&gt;unreferenced object 0xffff888003ba7180 (size 96):
  comm &amp;#34;modprobe&amp;#34;, pid 3777, jiffies 4295537735 (age 233.784s)
  backtrace:
    kmem_cache_alloc (mm/slub.c:3250 mm/slub.c:3256 mm/slub.c:3263 mm/slub.c:3273)
    configfs_new_dirent (./include/linux/slab.h:723 fs/configfs/dir.c:194)
    configfs_make_dirent (fs/configfs/dir.c:248)
    configfs_create_dir (fs/configfs/dir.c:296)
    configfs_attach_group.isra.28 (fs/configfs/dir.c:816 fs/configfs/dir.c:852)
    configfs_register_subsystem (fs/configfs/dir.c:1881)
    basic_write (drivers/hwtracing/stm/p_basic.c:14) stm_p_basic
    do_one_initcall (init/main.c:1296)
    do_init_module (kernel/module/main.c:2455)
    ...&lt;/p&gt;
&lt;p&gt;This is because the refcount is not correct in configfs_make_dirent().
For normal stage, the refcount is changing as:&lt;/p&gt;
&lt;p&gt;configfs_register_s…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Linux&lt;/p&gt;
&lt;p&gt;In the Linux kernel, the following vulnerability has been resolved:&lt;/p&gt;
&lt;p&gt;configfs: fix possible memory leak in configfs_create_dir()&lt;/p&gt;
&lt;p&gt;kmemleak reported memory leaks in configfs_create_dir():&lt;/p&gt;
&lt;p&gt;unreferenced object 0xffff888009f6af00 (size 192):
  comm &amp;#34;modprobe&amp;#34;, pid 3777, jiffies 4295537735 (age 233.784s)
  backtrace:
    kmem_cache_alloc (mm/slub.c:3250 mm/slub.c:3256 mm/slub.c:3263 mm/slub.c:3273)
    new_fragment (./include/linux/slab.h:600 fs/configfs/dir.c:163)
    configfs_register_subsystem (fs/configfs/dir.c:1857)
    basic_write (drivers/hwtracing/stm/p_basic.c:14) stm_p_basic
    do_one_initcall (init/main.c:1296)
    do_init_module (kernel/module/main.c:2455)
    ...&lt;/p&gt;
&lt;p&gt;unreferenced object 0xffff888003ba7180 (size 96):
  comm &amp;#34;modprobe&amp;#34;, pid 3777, jiffies 4295537735 (age 233.784s)
  backtrace:
    kmem_cache_alloc (mm/slub.c:3250 mm/slub.c:3256 mm/slub.c:3263 mm/slub.c:3273)
    configfs_new_dirent (./include/linux/slab.h:723 fs/configfs/dir.c:194)
    configfs_make_dirent (fs/configfs/dir.c:248)
    configfs_create_dir (fs/configfs/dir.c:296)
    configfs_attach_group.isra.28 (fs/configfs/dir.c:816 fs/configfs/dir.c:852)
    configfs_register_subsystem (fs/configfs/dir.c:1881)
    basic_write (drivers/hwtracing/stm/p_basic.c:14) stm_p_basic
    do_one_initcall (init/main.c:1296)
    do_init_module (kernel/module/main.c:2455)
    ...&lt;/p&gt;
&lt;p&gt;This is because the refcount is not correct in configfs_make_dirent().
For normal stage, the refcount is changing as:&lt;/p&gt;
&lt;p&gt;configfs_register_s…&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://vulnerability.circl.lu/vuln/cve-2022-50751</guid>
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