SB20261015124 - NULL pointer dereference in Linux kernel drm virtio driver
Published: October 15, 2026
Security Bulletin ID
SB20261015124
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2026-98404)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a null pointer dereference in drm_mode_addfb2() when virtio_gpu_user_framebuffer_create() returns a null pointer on an error path. A local user can trigger the framebuffer creation error path to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/07de0b31dd64094cd7d25729beaf2ecae74daa72
- https://git.kernel.org/stable/c/3fe8a33715265ecb24ca0bcd0a575c926da4277c
- https://git.kernel.org/stable/c/45dc2788a5b0e1e2824d1f98af521bd3acc340d7
- https://git.kernel.org/stable/c/5eda6cda0031ba17559d56882353be39e568ec09
- https://git.kernel.org/stable/c/94579f24e2b526a04eb41050af0ba018c6f528e7
- https://git.kernel.org/stable/c/974845d2535a250b180e62f9ed50284f312c01a3
- https://git.kernel.org/stable/c/975f3cf302bb7d7336df4c630a7c07e12780ad10
- https://git.kernel.org/stable/c/f1050a7d365283678b253828739d3866ae546a72