Google Android Process Unshare fork.c ksys_unshare use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$5k-$25k0.00+

Summaryinfo

A vulnerability was found in Google Android. It has been classified as very critical. This vulnerability affects the function ksys_unshare of the file fork.c of the component Process Unshare. This manipulation causes use after free. This vulnerability is registered as CVE-2026-58826. The attack needs to be launched locally. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in Google Android (unknown version) and classified as very critical. Affected by this vulnerability is the function ksys_unshare of the file fork.c of the component Process Unshare. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In ksys_unshare of fork.c, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

It is possible to read the advisory at android.googlesource.com. This vulnerability is known as CVE-2026-58826 since 07/02/2026. The exploitation appears to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/02/2026).

Applying the patch 13beada2dac38c2d7303f1700aa16fb5053b919d is able to eliminate this problem.

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

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
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: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 13beada2dac38c2d7303f1700aa16fb5053b919d

Timelineinfo

07/02/2026 CVE reserved
11/02/2026 +123 days Advisory disclosed
11/02/2026 +0 days VulDB entry created
11/02/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: google.com

Advisory: android.googlesource.com
Status: Confirmed

CNA: google_android
CVE: CVE-2026-58826 (🔒)

GCVE (CVE): GCVE-0-2026-58826
GCVE (VulDB): GCVE-100-430015
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 11/02/2026 21:17
Changes: 11/02/2026 21:17 (57)
Complete: 🔍
Cache ID: 216::103

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

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