Improper resource shutdown or release in Linux kernel - CVE-2026-43397
Published: May 8, 2026
Vulnerability identifier: #VU130780
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-43397
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in samsung_dsim_host_attach() when handling attach error paths after calling drm_bridge_add(). A local user can trigger an attach failure to cause a denial of service.
The issue occurs when samsung_dsim_register_te_irq() or pdata->host_ops->attach() fails after the bridge has already been added.
How to mitigate CVE-2026-43397
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/0b07f7d2c5a4078c2f1c11bb36685084fe4e5c95
- https://git.kernel.org/stable/c/803ec1faf7c1823e6e3b1f2aaa81be18528c9436
- https://git.kernel.org/stable/c/98310fe3a2a79671b739a5344c1a11d74c503e25
- https://git.kernel.org/stable/c/a40b92fb4b26d4cb1b5e439e55a56db7e79a82d1
- https://git.kernel.org/stable/c/e6d779654cda63d632bd8dfcdcabd125057e30a5