CVE-2026-43387 staging: rtl8723bs: properly validate the data in rtw_get_ie_ex()

What is CVE-2026-43387?

CVE-2026-43387 is a medium-severity memory corruption vulnerability in Linux kernel, published on 8 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

Which versions are affected by CVE-2026-43387?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-43387?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-43387 being exploited?

There is no known exploitation of CVE-2026-43387 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-43387, DEBIAN-CVE-2026-43387, GHSA-f4g6-fp8v-f3h5, ROOT-OS-DEBIAN-11-CVE-2026-43387, ROOT-OS-UBUNTU-2204-CVE-2026-43387, ROOT-OS-UBUNTU-2404-CVE-2026-43387 and 1 more.