CVE-2026-23059: scsi: qla2xxx: Sanitize payload size to prevent member overflow
Vulnerability summary
CVE-2026-23059 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 10% of scored vulnerabilities.
No CVSS vector published; no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 22 · Related 19Timeline
- 04-02-2026PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
Risk metrics not yet published.
EPSS trend
Probability
0.20%
Chance of exploitation in the next 30 days
Percentile
10%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.20% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: not stated in public data.
Ubuntu130 products
- linux< 6.8.0-117.117 | All versions (No fix recorded)
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 6.8.0-1055.58 | All versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 6.12.69-1 | < 6.18.8-1
Linux1 product
- linux≥ 875386b98857822b77ac7f95bdf367b70af5b78c, < 408bfa8d70f79ac696cec1bdbdfb3bf43a02e6d0 | ≥ 875386b98857822b77ac7f95bdf367b70af5b78c, < 1922468a4a80424e5a69f7ba50adcee37f4722e9 | ≥ 875386b98857822b77ac7f95bdf367b70af5b78c, < aa14451fa5d5f2de919384c637e2a8c604e1a1fe | ≥ 875386b98857822b77ac7f95bdf367b70af5b78c, < 19bc5f2a6962dfaa0e32d0e0bc2271993d85d414 | 6.6
3 vendors · 132 products
