CVE-2022-47942 Memory corruption in n/a

What is CVE-2022-47942?

CVE-2022-47942 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 a heap-based buffer overflow in set_ntacl_dacl, related to use of SMB2_QUERY_INFO_HE after a malformed SMB2_SET_INFO_HE command.

Weakness: CWE-787

Which versions are affected by CVE-2022-47942?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-47942?

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-2022-47942 being exploited?

There is no known exploitation of CVE-2022-47942 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-12097, DEBIAN-CVE-2022-47942, GHSA-g2h7-7gvv-x89v, UBUNTU-CVE-2022-47942.