Linux Kernel up to 6.18.52/7.2.6/7.3-rc2 afs afs_edit_dir_remove double free

CVSS Meta Temp Score
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CTI Interest Score
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8.6$5k-$25k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.18.52/7.2.6/7.3-rc2 and classified as very critical. The affected element is the function afs_edit_dir_remove of the component afs. The manipulation results in double free. This vulnerability is cataloged as CVE-2026-97585. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.52/7.2.6/7.3-rc2. It has been classified as very critical. Affected is the function afs_edit_dir_remove of the component afs. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: afs: Fix double-unmap of directory block Fix afs_edit_dir_remove() to use a cleanup function to unmap the block pointed to by afs_dir_iter::block if it's left pointing to something rather than manually kunmapping the blocks. Manually kunmapping without clearing iter.blocks can result in a double-kunmap if afs_dir_find_block() is called twice in a row (which would be the case if the block being modified is not first in the hash chain).

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2026-97585 since 09/24/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 10/20/2026).

Upgrading to version 6.18.53, 7.2.7 or 7.3-rc3 eliminates this vulnerability. Applying the patch 9d6c703e24da3d39067e3c75f4ac2f6001c2472f/b60f51e4ad0f6f940899788ccc2762db1e3b69e6/e3cfd3eb7d5be7787cc69530b423f788f14d084f 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 CERT Bund (WID-SEC-2026-3579). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Red Hat Enterprise Linux
  • RESF Rocky Linux
  • SUSE Linux
  • SUSE openSUSE
  • Ubuntu Linux
  • Oracle Linux
  • Open Source Linux Kernel

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.6

VulDB Base Score: 9.0
VulDB Temp Score: 8.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.53/7.2.7/7.3-rc3
Patch: 9d6c703e24da3d39067e3c75f4ac2f6001c2472f/b60f51e4ad0f6f940899788ccc2762db1e3b69e6/e3cfd3eb7d5be7787cc69530b423f788f14d084f

Timelineinfo

09/24/2026 CVE reserved
09/25/2026 +1 days Advisory disclosed
09/25/2026 +0 days VulDB entry created
10/20/2026 +25 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CNA: Linux
CVE: CVE-2026-97585 (🔒)

GCVE (CVE): GCVE-0-2026-97585
GCVE (VulDB): GCVE-100-410064
CERT Bund: WID-SEC-2026-3579 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/25/2026 14:16
Updated: 10/20/2026 21:23
Changes: 09/25/2026 14:16 (59), 10/20/2026 21:23 (7)
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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