CVE-2022-47943 — Out-of-bounds Read in Kernel

CWE-125 — Out-of-bounds Read6 documents6 sources
Severity
8.1HIGHNVD
EPSS
1.7%
top 17.65%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Linux KernelDebian LinuxMsrc Cbl2 Kernel 5.15.86.1-1 ON CBL Mariner 2.0+2 more
Timeline
PublishedDec 23

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HExploitability: 2.8 | Impact: 5.2

Affected Packages6 packages

▶NVDlinux/linux_kernel5.15 — 5.15.62+2
▶Debianlinux/linux_kernel< 5.19.6-1+2
▶debiandebian/linux< linux 5.19.6-1 (bookworm)

Patches

Patch: cdn.kernel.org ↗Patch: git.kernel.org ↗Patch: github.com ↗

🔴Vulnerability Details

2
OSV
CVE-2022-47943: An issue was discovered in ksmbd in the Linux kernel 5↗2022-12-23
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GHSA
GHSA-m847-mpgv-7mwr: An issue was discovered in ksmbd in the Linux kernel before 5↗2022-12-23
▶

📋Vendor Advisories

3
Red Hat
kernel: large length in the zero DataOffset case in smb2_write() processing could result in out-of-bounds read↗2022-12-22
▶
Microsoft
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.↗2022-12-13
▶
Debian
CVE-2022-47943: linux - An issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5....↗2022
▶