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CVE-2026-89865 Affecting kernel-uek-modules-usb package, versions <0:6.12.0-207.111.5.1.el10uek

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.22% (12th percentile)

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  • Snyk IDSNYK-ORACLE10-KERNELUEKMODULESUSB-20583161
  • published8 Oct 2026
  • disclosed16 Sept 2026
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Introduced: 16 Sep 2026

CVE-2026-89865  (opens in a new tab)

How to fix?

Upgrade Oracle:10 kernel-uek-modules-usb to version 0:6.12.0-207.111.5.1.el10uek or higher.
This issue was patched in ELSA-2026-500374.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-modules-usb package and not the kernel-uek-modules-usb package as distributed by Oracle. See How to fix? for Oracle:10 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

scsi: qla2xxx: Zero SFP DMA buffer in FRU/I2C bsg handlers

The FRU and I2C bsg handlers stage their transfer in a DMA_POOL_SIZE (256-byte) bounce buffer obtained from dma_pool_alloc(), which does not zero the allocation. They initialize only a few leading bytes before handing the buffer to qla2x00_write_sfp().

qla2x00_write_sfp() can override the transfer length with a user-supplied value:

if (len == 1)
    opt |= BIT_0;
if (opt &amp; BIT_0)
    len = *sfp;

*sfp is the first byte of the (user-controlled) payload, so len can grow up to 255. The device then DMA-reads len bytes from the 256-byte pool buffer. Since only a small prefix was written (e.g. MAX_FRU_SIZE == 36 bytes for a FRU version, one byte for a FRU status register), the hardware reads past the initialized region and writes up to ~219 bytes of stale DMA-pool heap memory to the device flash.

Allocate the buffer with dma_pool_zalloc() in all five FRU/I2C handlers so any bytes beyond the initialized data are zero rather than stale heap contents.

CVSS Base Scores

version 3.1