CVE-2025-37947Out-of-bounds Write in Linux

CWE-787Out-of-bounds Write43 documents8 sources
Severity
7.8HIGHNVD
OSV3.2
EPSS
0.0%
top 92.01%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedMay 20
Latest updateMar 25

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: prevent out-of-bounds stream writes by validating *pos ksmbd_vfs_stream_write() did not validate whether the write offset (*pos) was within the bounds of the existing stream data length (v_len). If *pos was greater than or equal to v_len, this could lead to an out-of-bounds memory write. This patch adds a check to ensure *pos is less than v_len before proceeding. If the condition fails, -EINVAL is returned.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

NVDlinux/linux_kernel5.156.1.139+4
Debianlinux/linux_kernel< 6.1.140-1+2
Ubuntulinux/linux_kernel< 6.8.0-100.100
CVEListV5linux/linux0626e6641f6b467447c81dd7678a69c66f7746cf7f61da79df86fd140c7768e668ad846bfa7ec8e1+5

Also affects: Debian Linux 11.0

Patches

🔴Vulnerability Details

22
OSV
linux-azure-6.8 vulnerabilities2026-03-25
OSV
linux-azure-fips vulnerabilities2026-03-04
OSV
linux-azure vulnerabilities2026-03-04
OSV
linux-ibm, linux-ibm-6.8 vulnerabilities2026-02-24
OSV
linux-xilinx vulnerabilities2026-02-24

📋Vendor Advisories

20
Ubuntu
Linux kernel (Azure) vulnerabilities2026-03-25
Ubuntu
Linux kernel (Azure) vulnerabilities2026-03-04
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities2026-03-04
Ubuntu
Linux kernel (Xilinx) vulnerabilities2026-02-24
Ubuntu
Linux kernel (IBM) vulnerabilities2026-02-24
CVE-2025-37947 — Out-of-bounds Write in Linux | cvebase