Linux Kernel up to 6.18.52/7.2.4 f2fs f2fs_stop_gc_thread race condition

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as very critical, has been found in Linux Kernel up to 6.18.52/7.2.4. Affected by this issue is the function f2fs_stop_gc_thread of the component f2fs. The manipulation leads to race condition. This vulnerability is uniquely identified as CVE-2026-93285. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.52/7.2.4 and classified as very critical. This issue affects the function f2fs_stop_gc_thread of the component f2fs. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: f2fs: embed f2fs_gc_kthread in f2fs_sb_info Instead of allocating f2fs_gc_kthread dynamically, embed it in f2fs_sb_info. This simplifies lifetime management and prepares for fixing race conditions during teardown. - __sbi_store - remount|shutdown - f2fs_stop_gc_thread - access sbi->gc_thread - sbi->gc_thread = NULL - access sbi->gc_thread->f2fs_gc_task

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-93285 since 09/17/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/25/2026).

The vulnerability scanner Nessus provides a plugin with the ID 350072 (Linux Distros Unpatched Vulnerability : CVE-2026-93285), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.53, 7.2.5 or 7.3-rc1 eliminates this vulnerability. Applying the patch 23eee01c732ec8c62b05416a05f0f88129df2960/99d14d61aa8beb6cb9a984b9fcddd45e35b24494/3d7bca9d583793bb7d0bac0d95a24ddd2e129eed is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (350072). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.5

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 350072
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-93285

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.53/7.2.5/7.3-rc1
Patch: 23eee01c732ec8c62b05416a05f0f88129df2960/99d14d61aa8beb6cb9a984b9fcddd45e35b24494/3d7bca9d583793bb7d0bac0d95a24ddd2e129eed

Timelineinfo

09/17/2026 CVE reserved
09/24/2026 +7 days Advisory disclosed
09/24/2026 +0 days VulDB entry created
09/25/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-93285 (🔒)
GCVE (CVE): GCVE-0-2026-93285
GCVE (VulDB): GCVE-100-409487

Entryinfo

Created: 09/24/2026 18:38
Updated: 09/25/2026 11:19
Changes: 09/24/2026 18:38 (59), 09/25/2026 11:19 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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