Linux Kernel up to 6.12.1 ocfs2_file_read_iter uninitialized pointer

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6.2	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 6.12.1. This issue affects the function ocfs2_file_read_iter. This manipulation causes uninitialized pointer. The identification of this vulnerability is CVE-2024-53155. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.1. It has been declared as problematic. Affected by this vulnerability is the function ocfs2_file_read_iter. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. The CWE definition for the vulnerability is CWE-824. The product accesses or uses a pointer that has not been initialized. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix uninitialized value in ocfs2_file_read_iter() Syzbot has reported the following KMSAN splat: BUG: KMSAN: uninit-value in ocfs2_file_read_iter+0x9a4/0xf80 ocfs2_file_read_iter+0x9a4/0xf80 __io_read+0x8d4/0x20f0 io_read+0x3e/0xf0 io_issue_sqe+0x42b/0x22c0 io_wq_submit_work+0xaf9/0xdc0 io_worker_handle_work+0xd13/0x2110 io_wq_worker+0x447/0x1410 ret_from_fork+0x6f/0x90 ret_from_fork_asm+0x1a/0x30 Uninit was created at: __alloc_pages_noprof+0x9a7/0xe00 alloc_pages_mpol_noprof+0x299/0x990 alloc_pages_noprof+0x1bf/0x1e0 allocate_slab+0x33a/0x1250 ___slab_alloc+0x12ef/0x35e0 kmem_cache_alloc_bulk_noprof+0x486/0x1330 __io_alloc_req_refill+0x84/0x560 io_submit_sqes+0x172f/0x2f30 __se_sys_io_uring_enter+0x406/0x41c0 __x64_sys_io_uring_enter+0x11f/0x1a0 x64_sys_call+0x2b54/0x3ba0 do_syscall_64+0xcd/0x1e0 entry_SYSCALL_64_after_hwframe+0x77/0x7f Since an instance of 'struct kiocb' may be passed from the block layer with 'private' field uninitialized, introduce 'ocfs2_iocb_init_rw_locked()' and use it from where 'ocfs2_dio_end_io()' might take care, i.e. in 'ocfs2_file_read_iter()' and 'ocfs2_file_write_iter()'.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2024-53155 since 11/19/2024. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 216224 (Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2025-20100)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.325, 5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.64, 6.11.11 or 6.12.2 eliminates this vulnerability. Applying the patch 6c8f8d1e595dabd5389817f6d798cc8bd95c40ab/f4078ef38d3163e6be47403a619558b19c4bfccd/66b7ddd1804e2c4216dd7ead8eeb746cdbb3b62f/8c966150d5abff58c3c2bdb9a6e63fd773782905/83f8713a0ef1d55d6a287bcfadcaab8245ac5098/8e0de82ed18ba0e71f817adbd81317fd1032ca5a/366c933c2ab34dd6551acc03b4872726b7605143/dc78efe556fed162d48736ef24066f42e463e27c/adc77b19f62d7e80f98400b2fca9d700d2afdd6f is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (216224) and CERT Bund (WID-SEC-2024-3756). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

• Debian Linux
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• RESF Rocky Linux
• Dell NetWorker
• Dell Avamar
• Red Hat OpenShift
• Dell PowerProtect Data Domain
• Open Source Linux Kernel
• Dell PowerScale OneFS

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.19.324
• 5.4.286
• 5.10.230
• 5.15.173
• 6.1.119
• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4
• 6.6.5
• 6.6.6
• 6.6.7
• 6.6.8
• 6.6.9
• 6.6.10
• 6.6.11
• 6.6.12
• 6.6.13
• 6.6.14
• 6.6.15
• 6.6.16
• 6.6.17
• 6.6.18
• 6.6.19
• 6.6.20
• 6.6.21
• 6.6.22
• 6.6.23
• 6.6.24
• 6.6.25
• 6.6.26
• 6.6.27
• 6.6.28
• 6.6.29
• 6.6.30
• 6.6.31
• 6.6.32
• 6.6.33
• 6.6.34
• 6.6.35
• 6.6.36
• 6.6.37
• 6.6.38
• 6.6.39
• 6.6.40
• 6.6.41
• 6.6.42
• 6.6.43
• 6.6.44
• 6.6.45
• 6.6.46
• 6.6.47
• 6.6.48
• 6.6.49
• 6.6.50
• 6.6.51
• 6.6.52
• 6.6.53
• 6.6.54
• 6.6.55
• 6.6.56
• 6.6.57
• 6.6.58
• 6.6.59
• 6.6.60
• 6.6.61
• 6.6.62
• 6.6.63
• 6.11.0
• 6.11.1
• 6.11.2
• 6.11.3
• 6.11.4
• 6.11.5
• 6.11.6
• 6.11.7
• 6.11.8
• 6.11.9
• 6.11.10
• 6.12.0
• 6.12.1

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Uninitialized pointer
CWE: CWE-824 / CWE-908
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 216224
Nessus Name: Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2025-20100)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.19.325/5.4.287/5.10.231/5.15.174/6.1.120/6.6.64/6.11.11/6.12.2
Patch: 6c8f8d1e595dabd5389817f6d798cc8bd95c40ab/f4078ef38d3163e6be47403a619558b19c4bfccd/66b7ddd1804e2c4216dd7ead8eeb746cdbb3b62f/8c966150d5abff58c3c2bdb9a6e63fd773782905/83f8713a0ef1d55d6a287bcfadcaab8245ac5098/8e0de82ed18ba0e71f817adbd81317fd1032ca5a/366c933c2ab34dd6551acc03b4872726b7605143/dc78efe556fed162d48736ef24066f42e463e27c/adc77b19f62d7e80f98400b2fca9d700d2afdd6f

Timelineinfo

11/19/2024 🔍
12/24/2024 +35 days 🔍
12/24/2024 +0 days 🔍
01/18/2026 +390 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-53155 (🔍)
GCVE (CVE): GCVE-0-2024-53155
GCVE (VulDB): GCVE-100-289249
CERT Bund: WID-SEC-2024-3756 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 12/24/2024 14:19
Updated: 01/18/2026 20:49
Changes: 12/24/2024 14:19 (57), 02/13/2025 13:36 (2), 07/22/2025 02:14 (7), 10/02/2025 10:54 (12), 10/22/2025 07:56 (1), 01/18/2026 20:49 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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