CVE-2022-49381

MEDIUM EPSS 15.7%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
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Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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: [<ffffffff859c45e5>] kmem_cache_alloc_trace+0x475/0x8a0 [<ffffffff86160146>] jffs2_sum_init+0x96/0x1a0 [<ffffffff86140e25>] jffs2_do_mount_fs+0x745/0x2120 [<ffffffff86149fec>] jffs2_do_fill_super+0x35c/0x810 [<ffffffff8614aae9>] 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: [<ffffffff858579ba>] kmalloc_order+0xda/0x110 [<ffffffff85857a11>] kmalloc_order_trace+0x21/0x130 [<ffffffff859c2ed1>] __kmalloc+0x711/0x8a0 [<ffffffff86160189>] jffs2_sum_init+0xd9/0x1a0 [<ffffffff86140e25>] jffs2_do_mount_fs+0x745/0x2120 [<ffffffff86149fec>] jffs2_do_fill_super+0x35c/0x810 [<ffffffff8614aae9>] 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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
15.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥2.6.15  –  <4.9.318
linuxlinux_kernel*≥4.10  –  <4.14.283
linuxlinux_kernel*≥4.15  –  <4.19.247
linuxlinux_kernel*≥4.20  –  <5.4.198
linuxlinux_kernel*≥5.5  –  <5.10.122
linuxlinux_kernel*≥5.11  –  <5.15.47
linuxlinux_kernel*≥5.16  –  <5.17.15
linuxlinux_kernel*≥5.18  –  <5.18.4

References 9

  • git.kernel.org https://git.kernel.org/stable/c/28048a4cf3813b7cf5cc8cce629dfdc7951cb1c2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3252d327f977b14663a10967f3b0930d6c325687
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4ba7bbeab8009faf3a726e565d98816593ddd5b0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4da8763a3d2b684c773b72ed80fad40bc264bc40
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/69295267c481545f636b69ff341b8db75aa136b9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c14adb1cf70a984ed081c67e9d27bc3caad9537c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cf9db013e167bc8fc2ecd7a13ed97a37df0c9dab
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d3a4fff1e7e408c32649030daa7c2c42a7e19a95
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ecc53e58596542791e82eff00702f8af7a313f70
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/28048a4cf3813b7cf5cc8cce629dfdc7951cb1c2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3252d327f977b14663a10967f3b0930d6c325687
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4ba7bbeab8009faf3a726e565d98816593ddd5b0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4da8763a3d2b684c773b72ed80fad40bc264bc40
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/69295267c481545f636b69ff341b8db75aa136b9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c14adb1cf70a984ed081c67e9d27bc3caad9537c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cf9db013e167bc8fc2ecd7a13ed97a37df0c9dab
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d3a4fff1e7e408c32649030daa7c2c42a7e19a95
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ecc53e58596542791e82eff00702f8af7a313f70
    Patch