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CVE-2023-53278

ubifs: Fix memory leak in ubifs_sysfs_init()

MEDIUM
5.5
CVSS Score
Published: September 16, 2025 at 08:11 AM UTC
Updated: June 17, 2026 at 06:44 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix memory leak in ubifs_sysfs_init() When insmod ubifs.ko, a kmemleak reported as below: unreferenced object 0xffff88817fb1a780 (size 8): comm "insmod", pid 25265, jiffies 4295239702 (age 100.130s) hex dump (first 8 bytes): 75 62 69 66 73 00 ff ff ubifs... backtrace: [<ffffffff81b3fc4c>] slab_post_alloc_hook+0x9c/0x3c0 [<ffffffff81b44bf3>] __kmalloc_track_caller+0x183/0x410 [<ffffffff8198d3da>] kstrdup+0x3a/0x80 [<ffffffff8198d486>] kstrdup_const+0x66/0x80 [<ffffffff83989325>] kvasprintf_const+0x155/0x190 [<ffffffff83bf55bb>] kobject_set_name_vargs+0x5b/0x150 [<ffffffff83bf576b>] kobject_set_name+0xbb/0xf0 [<ffffffff8100204c>] do_one_initcall+0x14c/0x5a0 [<ffffffff8157e380>] do_init_module+0x1f0/0x660 [<ffffffff815857be>] load_module+0x6d7e/0x7590 [<ffffffff8158644f>] __do_sys_finit_module+0x19f/0x230 [<ffffffff815866b3>] __x64_sys_finit_module+0x73/0xb0 [<ffffffff88c98e85>] do_syscall_64+0x35/0x80 [<ffffffff88e00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd When kset_register() failed, we should call kset_put to cleanup it.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.17 ≤ v < 6.1.185.17 ≤ v < 6.2.55.17 ≤ v < 6.36.2 ≤ v < 6.2.52e3cbf425804fb44a005e252f88f93dff108c9115.17
Vendor states this is fixed in 1c5fdf2d4647219d2267ccb08c7f2c7095bf3450 (fixed)
Vendor states this is fixed in 203a55f04f66eea1a1ca7e5a302a7f5c99c62327 (fixed)
Vendor states this is fixed in d42c2b18c42da7378e67b6414aafe93b65de89d1 (fixed)
Vendor states this is fixed in 5.17 (unaffected)
Vendor states this is fixed in 6.1.18 (unaffected)
Vendor states this is fixed in 6.2.5 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/1c5fdf2d4647219d2267ccb08c7f2c7095bf3450
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/203a55f04f66eea1a1ca7e5a302a7f5c99c62327
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d42c2b18c42da7378e67b6414aafe93b65de89d1

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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