SB20261029158 - Out-of-bounds read in Linux kernel scsi driver

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2026-99154)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to trigger an out-of-bounds kernel memory read that may cause a denial of service.

The vulnerability exists due to an out-of-bounds read in the Linux kernel libiscsi task lookups when processing a negative task index returned by parse_pdu_itt. A remote attacker can send an unsolicited NOP-In PDU from an iSCSI target through the be2iscsi transport with an ITT value that becomes a negative signed index to cause a read before the session's task array, potentially crashing the kernel.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/35b60549a956237488c89a2d85352e026e7d55b7
• https://git.kernel.org/stable/c/6cadfa6f1f5896632d4223d3b7addb2a29fea74e
• https://git.kernel.org/stable/c/8ee2a09a1dbb257c9e828ad2497f8e4832dfb142