Linux Kernel up to 6.16-rc5 raid1_reshape denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.16-rc5. This affects the function raid1_reshape. Executing a manipulation can lead to denial of service. The identification of this vulnerability is CVE-2025-38445. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.16-rc5 and classified as critical. This vulnerability affects the function raid1_reshape. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: md/raid1: Fix stack memory use after return in raid1_reshape In the raid1_reshape function, newpool is allocated on the stack and assigned to conf->r1bio_pool. This results in conf->r1bio_pool.wait.head pointing to a stack address. Accessing this address later can lead to a kernel panic. Example access path: raid1_reshape() { // newpool is on the stack mempool_t newpool, oldpool; // initialize newpool.wait.head to stack address mempool_init(&newpool, ...); conf->r1bio_pool = newpool; } raid1_read_request() or raid1_write_request() { alloc_r1bio() { mempool_alloc() { // if pool->alloc fails remove_element() { --pool->curr_nr; } } } } mempool_free() { if (pool->curr_nr < pool->min_nr) { // pool->wait.head is a stack address // wake_up() will try to access this invalid address // which leads to a kernel panic return; wake_up(&pool->wait); } } Fix: reinit conf->r1bio_pool.wait after assigning newpool.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2025-38445 since 04/16/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 265749 (SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2025:03290-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.296, 5.10.240, 5.15.189, 6.1.146, 6.6.99, 6.12.39, 6.15.7 or 6.16-rc6 eliminates this vulnerability. Applying the patch d8a6853d00fbaa810765c8ed2f452a5832273968/12b00ec99624f8da8c325f2dd6e807df26df0025/48da050b4f54ed639b66278d0ae6f4107b2c4e2d/5f35e48b76655e45522df338876dfef88dafcc71/df5894014a92ff0196dbc212a7764e97366fd2b7/776e6186dc9ecbdb8a1b706e989166c8a99bbf64/61fd5e93006cf82ec8ee5c115ab5cf4bbd104bdb/d67ed2ccd2d1dcfda9292c0ea8697a9d0f2f0d98 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 (265749), EUVD (EUVD-2025-22696) and CERT Bund (WID-SEC-2025-1653). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 265749
Nessus Name: SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2025:03290-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.4.296/5.10.240/5.15.189/6.1.146/6.6.99/6.12.39/6.15.7/6.16-rc6
Patch: d8a6853d00fbaa810765c8ed2f452a5832273968/12b00ec99624f8da8c325f2dd6e807df26df0025/48da050b4f54ed639b66278d0ae6f4107b2c4e2d/5f35e48b76655e45522df338876dfef88dafcc71/df5894014a92ff0196dbc212a7764e97366fd2b7/776e6186dc9ecbdb8a1b706e989166c8a99bbf64/61fd5e93006cf82ec8ee5c115ab5cf4bbd104bdb/d67ed2ccd2d1dcfda9292c0ea8697a9d0f2f0d98

Timelineinfo

04/16/2025 CVE reserved
07/25/2025 +100 days Advisory disclosed
07/25/2025 +0 days VulDB entry created
01/03/2026 +162 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38445 (🔒)
GCVE (CVE): GCVE-0-2025-38445
GCVE (VulDB): GCVE-100-317704
EUVD: 🔒
CERT Bund: WID-SEC-2025-1653 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 07/25/2025 19:09
Updated: 01/03/2026 23:09
Changes: 07/25/2025 19:09 (58), 07/30/2025 02:00 (1), 08/22/2025 19:43 (7), 09/15/2025 05:23 (1), 09/24/2025 00:50 (2), 09/29/2025 02:13 (1), 11/02/2025 13:58 (1), 11/17/2025 06:19 (1), 12/23/2025 00:48 (12), 12/23/2025 07:07 (1), 01/03/2026 23:09 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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