ghsa-hvr9-mmhm-xx2r
Vulnerability from github
Published
2025-04-14 21:32
Modified
2025-04-14 21:32
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:

jffs2: fix memory leak in jffs2_do_fill_super

If jffs2_iget() or d_make_root() in jffs2_do_fill_super() returns an error, we can observe the following kmemleak report:

unreferenced object 0xffff888105a65340 (size 64): comm "mount", pid 710, jiffies 4302851558 (age 58.239s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [] kmem_cache_alloc_trace+0x475/0x8a0 [] jffs2_sum_init+0x96/0x1a0 [] jffs2_do_mount_fs+0x745/0x2120 [] jffs2_do_fill_super+0x35c/0x810 [] jffs2_fill_super+0x2b9/0x3b0 [...] unreferenced object 0xffff8881bd7f0000 (size 65536): comm "mount", pid 710, jiffies 4302851558 (age 58.239s) hex dump (first 32 bytes): bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................ bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................ backtrace: [] kmalloc_order+0xda/0x110 [] kmalloc_order_trace+0x21/0x130 [] __kmalloc+0x711/0x8a0 [] jffs2_sum_init+0xd9/0x1a0 [] jffs2_do_mount_fs+0x745/0x2120 [] jffs2_do_fill_super+0x35c/0x810 [] jffs2_fill_super+0x2b9/0x3b0 [...]

This is because the resources allocated in jffs2_sum_init() are not released. Call jffs2_sum_exit() to release these resources to solve the problem.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49381"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:14Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\njffs2: fix memory leak in jffs2_do_fill_super\n\nIf jffs2_iget() or d_make_root() in jffs2_do_fill_super() returns\nan error, we can observe the following kmemleak report:\n\n--------------------------------------------\nunreferenced object 0xffff888105a65340 (size 64):\n  comm \"mount\", pid 710, jiffies 4302851558 (age 58.239s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003cffffffff859c45e5\u003e] kmem_cache_alloc_trace+0x475/0x8a0\n    [\u003cffffffff86160146\u003e] jffs2_sum_init+0x96/0x1a0\n    [\u003cffffffff86140e25\u003e] jffs2_do_mount_fs+0x745/0x2120\n    [\u003cffffffff86149fec\u003e] jffs2_do_fill_super+0x35c/0x810\n    [\u003cffffffff8614aae9\u003e] jffs2_fill_super+0x2b9/0x3b0\n    [...]\nunreferenced object 0xffff8881bd7f0000 (size 65536):\n  comm \"mount\", pid 710, jiffies 4302851558 (age 58.239s)\n  hex dump (first 32 bytes):\n    bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................\n    bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................\n  backtrace:\n    [\u003cffffffff858579ba\u003e] kmalloc_order+0xda/0x110\n    [\u003cffffffff85857a11\u003e] kmalloc_order_trace+0x21/0x130\n    [\u003cffffffff859c2ed1\u003e] __kmalloc+0x711/0x8a0\n    [\u003cffffffff86160189\u003e] jffs2_sum_init+0xd9/0x1a0\n    [\u003cffffffff86140e25\u003e] jffs2_do_mount_fs+0x745/0x2120\n    [\u003cffffffff86149fec\u003e] jffs2_do_fill_super+0x35c/0x810\n    [\u003cffffffff8614aae9\u003e] jffs2_fill_super+0x2b9/0x3b0\n    [...]\n--------------------------------------------\n\nThis is because the resources allocated in jffs2_sum_init() are not\nreleased. Call jffs2_sum_exit() to release these resources to solve\nthe problem.",
  "id": "GHSA-hvr9-mmhm-xx2r",
  "modified": "2025-04-14T21:32:23Z",
  "published": "2025-04-14T21:32:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49381"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/28048a4cf3813b7cf5cc8cce629dfdc7951cb1c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3252d327f977b14663a10967f3b0930d6c325687"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4ba7bbeab8009faf3a726e565d98816593ddd5b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4da8763a3d2b684c773b72ed80fad40bc264bc40"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/69295267c481545f636b69ff341b8db75aa136b9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c14adb1cf70a984ed081c67e9d27bc3caad9537c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf9db013e167bc8fc2ecd7a13ed97a37df0c9dab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d3a4fff1e7e408c32649030daa7c2c42a7e19a95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ecc53e58596542791e82eff00702f8af7a313f70"
    }
  ],
  "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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