CVE-2026-23059 Details
Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Sanitize payload size to prevent member overflow In qla27xx_copy_fpin_pkt() and qla27xx_copy_multiple_pkt(), the frame_size reported by firmware is used to calculate the copy length into item->iocb. However, the iocb member is defined as a fixed-size 64-byte array within struct purex_item. If the reported frame_size exceeds 64 bytes, subsequent memcpy calls will overflow the iocb member boundary. While extra memory might be allocated, this cross-member write is unsafe and triggers warnings under CONFIG_FORTIFY_SOURCE. Fix this by capping total_bytes to the size of the iocb member (64 bytes) before allocation and copying. This ensures all copies remain within the bounds of the destination structure member.
A vulnerability in the Linux kernel's SCSI QLA2XXX driver can lead to a member overflow. This issue arises in the functions 'qla27xx_copy_fpin_pkt()' and 'qla27xx_copy_multiple_pkt()', where the frame size reported by the firmware is used to determine the copy length into a fixed-size 64-byte array in the 'purex_item' structure. If the reported frame size exceeds 64 bytes, it causes a buffer overflow by overwriting adjacent memory. Although this may not immediately crash the system, it creates an unstable condition that could be exploited, especially with the added risk of triggering warnings under 'CONFIG_FORTIFY_SOURCE'. The vulnerability has been addressed by modifying the code to limit the copy length to 64 bytes, ensuring that all data transfers remain within the safe boundaries of the designated structure member.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for upgrading the kernel can be found in the official Linux documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Feb 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/1922468a4a80424e5a69f7ba50adcee37f4722e9 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/19bc5f2a6962dfaa0e32d0e0bc2271993d85d414 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/408bfa8d70f79ac696cec1bdbdfb3bf43a02e6d0 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/aa14451fa5d5f2de919384c637e2a8c604e1a1fe | kernel.org | Source CodeVendor |
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
| Product | Versions |
|---|---|
| Linux kernel | All versions |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Feb 4, 2026 | New CVE Received | kernel.org |