SB20260928405 - Out-of-bounds write in Linux kernel scsi qla2xxx driver

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds write (CVE-ID: CVE-2026-97535)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause an out-of-bounds write.

The vulnerability exists due to improper bounds checking in the qla2xxx VP control IOCB handling when processing a virtual port index that exceeds the vp_idx_map bitmap capacity. A local privileged user can submit a VP control operation containing an out-of-range virtual port index to cause an out-of-bounds write.

Exploitation is limited to adapters whose reported NPIV virtual-port capacity permits virtual port indices above 128.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/13354ad251ab009102597a791bc7c4d2265229e1
• https://git.kernel.org/stable/c/48a44e19746eaa70320a3c2571dcb345192fca72
• https://git.kernel.org/stable/c/878613ecb5a36db26859c4fd83daf9283a334fa2