Linux Kernel up to 7.0.7 ptrace get_dumpable privileges management

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 7.0.7. Affected by this issue is the function get_dumpable of the component ptrace. Such manipulation leads to an unknown weakness. This vulnerability is listed as CVE-2026-46333. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 7.0.7. Affected by this issue is the function get_dumpable of the component ptrace. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ptrace: slightly saner 'get_dumpable()' logic The 'dumpability' of a task is fundamentally about the memory image of the task - the concept comes from whether it can core dump or not - and makes no sense when you don't have an associated mm. And almost all users do in fact use it only for the case where the task has a mm pointer. But we have one odd special case: ptrace_may_access() uses 'dumpable' to check various other things entirely independently of the MM (typically explicitly using flags like PTRACE_MODE_READ_FSCREDS). Including for threads that no longer have a VM (and maybe never did, like most kernel threads). It's not what this flag was designed for, but it is what it is. The ptrace code does check that the uid/gid matches, so you do have to be uid-0 to see kernel thread details, but this means that the traditional "drop capabilities" model doesn't make any difference for this all. Make it all make a *bit* more sense by saying that if you don't have a MM pointer, we'll use a cached "last dumpability" flag if the thread ever had a MM (it will be zero for kernel threads since it is never set), and require a proper CAP_SYS_PTRACE capability to override.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2026-46333 since 05/13/2026. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/23/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 314997 (Linux Distros Unpatched Vulnerability : CVE-2026-46333), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.256, 5.15.207, 6.1.173, 6.6.139, 6.12.89, 6.18.31 or 7.0.8 eliminates this vulnerability. Applying the patch 93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6/15b828a46f305ae9f05a7c16914b3ce273474205/4709234fd1b95136ceb789f639b1e7ea5de1b181/8f907d345bae8f4b3f004c5abc56bf2dfb851ea7/6e5b51e74a40d377bcd3081dd33fbaa0e1aa7e3d/2a93a4fac7b6051d3be7cd1b015fe7320cd0404d/01363cb3fbd0238ffdeb09f53e9039c9edf8a730 is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (314997), EUVD (EUVD-2026-30540) and CERT Bund (WID-SEC-2026-1571). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • IBM QRadar SIEM

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 6.0

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

CNA Base Score: 7.1
CNA Vector (Linux): 🔒

ADP CISA Base Score: 5.5
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
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: 314997
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-46333

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.256/5.15.207/6.1.173/6.6.139/6.12.89/6.18.31/7.0.8
Patch: 93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6/15b828a46f305ae9f05a7c16914b3ce273474205/4709234fd1b95136ceb789f639b1e7ea5de1b181/8f907d345bae8f4b3f004c5abc56bf2dfb851ea7/6e5b51e74a40d377bcd3081dd33fbaa0e1aa7e3d/2a93a4fac7b6051d3be7cd1b015fe7320cd0404d/01363cb3fbd0238ffdeb09f53e9039c9edf8a730

Timelineinfo

05/13/2026 CVE reserved
05/15/2026 +2 days Advisory disclosed
05/15/2026 +0 days VulDB entry created
06/23/2026 +39 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-46333 (🔒)
GCVE (CVE): GCVE-0-2026-46333
GCVE (VulDB): GCVE-100-364178
EUVD: 🔒
CERT Bund: WID-SEC-2026-1571 - Linux Kernel: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Entryinfo

Created: 05/15/2026 17:59
Updated: 06/23/2026 09:47
Changes: 05/15/2026 17:59 (55), 05/16/2026 02:35 (1), 05/16/2026 10:02 (2), 05/21/2026 09:25 (22), 05/21/2026 13:15 (7), 06/23/2026 09:47 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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