Linux Kernel up to 6.19.8 staging rtw_get_ie_ex out-of-bounds

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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 6.19.8. The affected element is the function rtw_get_ie_ex of the component staging. Such manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2026-43387. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.19.8 and classified as problematic. Affected by this issue is the function rtw_get_ie_ex of the component staging. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: properly validate the data in rtw_get_ie_ex() Just like in commit 154828bf9559 ("staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser"), we don't trust the data in the frame so we should check the length better before acting on it

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-43387 since 05/01/2026. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 313394 (Linux Distros Unpatched Vulnerability : CVE-2026-43387), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.18.19 or 6.19.9 eliminates this vulnerability. Applying the patch ac38856092b4c994f94343251b30520bdeb7f475/35969c3a208a07cb8642301df5869c34e2db7071/8097a48c606a9306281ea7bd73bf2afc97553733/740bca8bbdb707c0e4bb11e3316deb2f04fc7ce1/821f7d759fb2de33c5e5b0c4981181c4d0c3e9b1/6d62fa548387e159a21ea95132c09bfc96d336ed/9a4cd4c37593cc8b8d28f9a6732b490a8032006a/f0109b9d3e1e455429279d602f6276e34689750a 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 (313394) and CERT Bund (WID-SEC-2026-1454). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Red Hat OpenShift
  • Microsoft Azure Linux
  • Open Source Linux Kernel
  • Proxmox Virtual Environment

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.5
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
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: 313394
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-43387

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.253/5.15.203/6.1.167/6.6.130/6.12.78/6.18.19/6.19.9
Patch: ac38856092b4c994f94343251b30520bdeb7f475/35969c3a208a07cb8642301df5869c34e2db7071/8097a48c606a9306281ea7bd73bf2afc97553733/740bca8bbdb707c0e4bb11e3316deb2f04fc7ce1/821f7d759fb2de33c5e5b0c4981181c4d0c3e9b1/6d62fa548387e159a21ea95132c09bfc96d336ed/9a4cd4c37593cc8b8d28f9a6732b490a8032006a/f0109b9d3e1e455429279d602f6276e34689750a

Timelineinfo

05/01/2026 CVE reserved
05/08/2026 +7 days Advisory disclosed
05/08/2026 +0 days VulDB entry created
07/28/2026 +81 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43387 (🔒)
GCVE (CVE): GCVE-0-2026-43387
GCVE (VulDB): GCVE-100-362192
CERT Bund: WID-SEC-2026-1454 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/08/2026 18:19
Updated: 07/28/2026 12:22
Changes: 05/08/2026 18:19 (59), 05/09/2026 07:32 (2), 05/27/2026 10:58 (11), 07/28/2026 12:22 (9)
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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