CVE-2022-47943 Memory corruption in n/a

What is CVE-2022-47943?

CVE-2022-47943 is a high-severity memory corruption vulnerability in Linux kernel, published on 23 Dec 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is an out-of-bounds read and OOPS for SMB2_WRITE, when there is a large length in the zero DataOffset case.

Weakness: CWE-125

Which versions are affected by CVE-2022-47943?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-47943?

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-2022-47943 being exploited?

There is no known exploitation of CVE-2022-47943 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 AZL-12109, DEBIAN-CVE-2022-47943, GHSA-m847-mpgv-7mwr, UBUNTU-CVE-2022-47943.