Vulnerability · Published Dec 23, 2022 · Assigned by mitre
CVE-2022-47942
High 8.8
In plain English
A high-severity out-of-bounds write in the linux package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.9% (higher than 90% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)3.9%top 9.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 5.19.6-1 | DEBIAN-CVE-2022-47942 |
| Debian:13 | linux | 5.19.6-1 | DEBIAN-CVE-2022-47942 |
| Debian:14 | linux | 5.19.6-1 | DEBIAN-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux | 5.15.0-53.59 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1023.27 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1023.29 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1024.30.1 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1022.29 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1020.25 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1008.12 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1018.21 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1018.23 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1021.26 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-53.59 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1015.15 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1022.28 | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1018.20 | UBUNTU-CVE-2022-47942 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2022-47942 |
| Ubuntu:22.04:LTS | linux-riscv | 5.15.0-1023.27 | UBUNTU-CVE-2022-47942 |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.2
- https://github.com/torvalds/linux/commit/8f0541186e9ad1b62accc9519cc2b7a7240272a7
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f0541186e9ad1b62accc9519cc2b7a7240272a7
- http://www.openwall.com/lists/oss-security/2022/12/23/10
- https://www.zerodayinitiative.com/advisories/ZDI-22-1688/