CVE-2022-49277 - Vulnerability Details

- jffs2: fix memory leak in jffs2_do_mount_fs

Description

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

jffs2: fix memory leak in jffs2_do_mount_fs

If jffs2_build_filesystem() in jffs2_do_mount_fs() returns an error,
we can observe the following kmemleak report:

--------------------------------------------
unreferenced object 0xffff88811b25a640 (size 64):
comm "mount", pid 691, jiffies 4294957728 (age 71.952s)
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:
[<ffffffffa493be24>] kmem_cache_alloc_trace+0x584/0x880
[<ffffffffa5423a06>] jffs2_sum_init+0x86/0x130
[<ffffffffa5400e58>] jffs2_do_mount_fs+0x798/0xac0
[<ffffffffa540acf3>] jffs2_do_fill_super+0x383/0xc30
[<ffffffffa540c00a>] jffs2_fill_super+0x2ea/0x4c0
[...]
unreferenced object 0xffff88812c760000 (size 65536):
comm "mount", pid 691, jiffies 4294957728 (age 71.952s)
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:
[<ffffffffa493a449>] __kmalloc+0x6b9/0x910
[<ffffffffa5423a57>] jffs2_sum_init+0xd7/0x130
[<ffffffffa5400e58>] jffs2_do_mount_fs+0x798/0xac0
[<ffffffffa540acf3>] jffs2_do_fill_super+0x383/0xc30
[<ffffffffa540c00a>] jffs2_fill_super+0x2ea/0x4c0
[...]
--------------------------------------------

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.

Published: 2025-02-26

Score: 5.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`e631ddba588783edd521c5a89f7b2902772fb691`	affected	< 2a9d8184458562e6bf2f40d0e677fc85e2dd3834
`e631ddba588783edd521c5a89f7b2902772fb691`	affected	< 9a0f6610c7daedd2eace430beeb08a8b7ac80699
`e631ddba588783edd521c5a89f7b2902772fb691`	affected	< dbe0d0521eaa6a3d235517319266c539bb5c5112
`e631ddba588783edd521c5a89f7b2902772fb691`	affected	< 0978e9af4559a171ac7a74a1b3ef21804b0a0fa9
`e631ddba588783edd521c5a89f7b2902772fb691`	affected	< 607d3aab7349f18e0d9dba4100d09d16fe27caca
`e631ddba588783edd521c5a89f7b2902772fb691`	affected	< 4392e8aeebc5a4f8073620bccba7de1b1f6d7c88
`e631ddba588783edd521c5a89f7b2902772fb691`	affected	< 5f34310d1376ca5b2ed798258def2c2ab3cc6699
`e631ddba588783edd521c5a89f7b2902772fb691`	affected	< c94128470e6fe53d9bd9d16d2d3271813f9d37af
`e631ddba588783edd521c5a89f7b2902772fb691`	affected	< d051cef784de4d54835f6b6836d98a8f6935772c

Linux

affected

Version	Status	Constraints
`2.6.15`	affected	—
`0`	unaffected	< 2.6.15
`4.9.311`	unaffected	≤ 4.9.*
`4.14.276`	unaffected	≤ 4.14.*
`4.19.238`	unaffected	≤ 4.19.*
`5.4.189`	unaffected	≤ 5.4.*
`5.10.110`	unaffected	≤ 5.10.*
`5.15.33`	unaffected	≤ 5.15.*
`5.16.19`	unaffected	≤ 5.16.*
`5.17.2`	unaffected	≤ 5.17.*
`5.18`	unaffected	≤ *

Configuration 1 [-]

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2022-54949	In the Linux kernel, the following vulnerability has been resolved: jffs2: fix memory leak in jffs2_do_mount_fs If jffs2_build_filesystem() in jffs2_do_mount_fs() returns an error, we can observe the following kmemleak report: -------------------------------------------- unreferenced object 0xffff88811b25a640 (size 64): comm "mount", pid 691, jiffies 4294957728 (age 71.952s) 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: [<ffffffffa493be24>] kmem_cache_alloc_trace+0x584/0x880 [<ffffffffa5423a06>] jffs2_sum_init+0x86/0x130 [<ffffffffa5400e58>] jffs2_do_mount_fs+0x798/0xac0 [<ffffffffa540acf3>] jffs2_do_fill_super+0x383/0xc30 [<ffffffffa540c00a>] jffs2_fill_super+0x2ea/0x4c0 [...] unreferenced object 0xffff88812c760000 (size 65536): comm "mount", pid 691, jiffies 4294957728 (age 71.952s) 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: [<ffffffffa493a449>] __kmalloc+0x6b9/0x910 [<ffffffffa5423a57>] jffs2_sum_init+0xd7/0x130 [<ffffffffa5400e58>] jffs2_do_mount_fs+0x798/0xac0 [<ffffffffa540acf3>] jffs2_do_fill_super+0x383/0xc30 [<ffffffffa540c00a>] jffs2_fill_super+0x2ea/0x4c0 [...] -------------------------------------------- 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.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00009.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://git.kernel.org/stable/c/0978e9af4559a171ac7a74a1b3ef21804b0a0fa9
https://git.kernel.org/stable/c/2a9d8184458562e6bf2f40d0e677fc85e2dd3834
https://git.kernel.org/stable/c/4392e8aeebc5a4f8073620bccba7de1b1f6d7c88
https://git.kernel.org/stable/c/5f34310d1376ca5b2ed798258def2c2ab3cc6699
https://git.kernel.org/stable/c/607d3aab7349f18e0d9dba4100d09d16fe27caca
https://git.kernel.org/stable/c/9a0f6610c7daedd2eace430beeb08a8b7ac80699
https://git.kernel.org/stable/c/c94128470e6fe53d9bd9d16d2d3271813f9d37af
https://git.kernel.org/stable/c/d051cef784de4d54835f6b6836d98a8f6935772c
https://git.kernel.org/stable/c/dbe0d0521eaa6a3d235517319266c539bb5c5112
https://lore.kernel.org/linux-cve-announce/2025022631-CVE-2022-49277-ff2c@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49277
https://www.cve.org/CVERecord?id=CVE-2022-49277

History

Thu, 02 Oct 2025 21:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Mon, 21 Apr 2025 02:45:00 +0000

Type	Values Removed	Values Added
Metrics	threat_severity `Low`	threat_severity `Moderate`

Mon, 14 Apr 2025 17:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
Weaknesses		CWE-401
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel

Wed, 26 Feb 2025 13:45:00 +0000

Type	Values Removed	Values Added
References		https://lore.kernel.org/linux-cve-announce/2025022631-CVE-2022-49277-ff2c@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2022-49277 https://www.cve.org/CVERecord?id=CVE-2022-49277
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Low`

Wed, 26 Feb 2025 02:15:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: jffs2: fix memory leak in jffs2_do_mount_fs If jffs2_build_filesystem() in jffs2_do_mount_fs() returns an error, we can observe the following kmemleak report: -------------------------------------------- unreferenced object 0xffff88811b25a640 (size 64): comm "mount", pid 691, jiffies 4294957728 (age 71.952s) 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: [<ffffffffa493be24>] kmem_cache_alloc_trace+0x584/0x880 [<ffffffffa5423a06>] jffs2_sum_init+0x86/0x130 [<ffffffffa5400e58>] jffs2_do_mount_fs+0x798/0xac0 [<ffffffffa540acf3>] jffs2_do_fill_super+0x383/0xc30 [<ffffffffa540c00a>] jffs2_fill_super+0x2ea/0x4c0 [...] unreferenced object 0xffff88812c760000 (size 65536): comm "mount", pid 691, jiffies 4294957728 (age 71.952s) 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: [<ffffffffa493a449>] __kmalloc+0x6b9/0x910 [<ffffffffa5423a57>] jffs2_sum_init+0xd7/0x130 [<ffffffffa5400e58>] jffs2_do_mount_fs+0x798/0xac0 [<ffffffffa540acf3>] jffs2_do_fill_super+0x383/0xc30 [<ffffffffa540c00a>] jffs2_fill_super+0x2ea/0x4c0 [...] -------------------------------------------- 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.
Title		jffs2: fix memory leak in jffs2_do_mount_fs
References		https://git.kernel.org/stable/c/0978e9af4559a171ac7a74a1b3ef21804b0a0fa9 https://git.kernel.org/stable/c/2a9d8184458562e6bf2f40d0e677fc85e2dd3834 https://git.kernel.org/stable/c/4392e8aeebc5a4f8073620bccba7de1b1f6d7c88 https://git.kernel.org/stable/c/5f34310d1376ca5b2ed798258def2c2ab3cc6699 https://git.kernel.org/stable/c/607d3aab7349f18e0d9dba4100d09d16fe27caca https://git.kernel.org/stable/c/9a0f6610c7daedd2eace430beeb08a8b7ac80699 https://git.kernel.org/stable/c/c94128470e6fe53d9bd9d16d2d3271813f9d37af https://git.kernel.org/stable/c/d051cef784de4d54835f6b6836d98a8f6935772c https://git.kernel.org/stable/c/dbe0d0521eaa6a3d235517319266c539bb5c5112

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-02-26T01:56:21.037Z

Updated: 2026-05-11T18:56:34.860Z

Reserved: 2025-02-26T01:49:39.298Z

Link: CVE-2022-49277

Vulnrichment

Updated: 2025-10-01T16:12:09.740Z

NVD

Status : Modified

Published: 2025-02-26T07:01:04.567

Modified: 2025-10-01T20:16:00.553

Link: CVE-2022-49277

Redhat

Severity : Moderate

Publid Date: 2025-02-26T00:00:00Z

Links: CVE-2022-49277 - Bugzilla

OpenCVE Enrichment

No data.

Weaknesses

CWE-401

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

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