CVE-2026-89858

Summary

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

scsi: qla2xxx: Bound image count in qla2x00_update_fru_versions()

qla2x00_update_fru_versions() copies the user-supplied BSG request into a fixed 256-byte stack buffer (bsg[DMA_POOL_SIZE]) and then iterates list->count times over the qla_image_version array embedded in that buffer, advancing the image pointer each iteration. count is taken directly from user input with no upper bound, while only (DMA_POOL_SIZE

  • sizeof(list->count)) / sizeof(struct qla_image_version) = 6 entries actually fit. A larger count walks the image pointer off the end of the stack buffer, reading adjacent kernel stack memory and sending it to the device via qla2x00_write_sfp().

Reject requests whose declared count does not fit in the buffer.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux697a4bc69159c3396035b0506ffa55c4b2d0b1f4 < af733bbfcf667af1871a2735fba2835b0da71efbaffected
LinuxLinux697a4bc69159c3396035b0506ffa55c4b2d0b1f4 < a9706d5e754e77515a92bb532bd0d73644979a1faffected
LinuxLinux697a4bc69159c3396035b0506ffa55c4b2d0b1f4 < 7e3154c97ec15460f715dbbe4097c255cce110b1affected
LinuxLinux697a4bc69159c3396035b0506ffa55c4b2d0b1f4 < 047f1f7ee6f85bde28abfdda9fa550191ddc0532affected
LinuxLinux697a4bc69159c3396035b0506ffa55c4b2d0b1f4 < f93e8039e6fd54a3c027c6184daf00b745b576a0affected
LinuxLinux697a4bc69159c3396035b0506ffa55c4b2d0b1f4 < 7b22b4cb8822805cef7ba618da6f76e1474d68bdaffected
LinuxLinux697a4bc69159c3396035b0506ffa55c4b2d0b1f4 < f2d4f025b67fcbfb2bbbadd3b5a6a43c4b436514affected
LinuxLinux697a4bc69159c3396035b0506ffa55c4b2d0b1f4 < de62cf265dbe309f34f144a6cdbca9240317727eaffected
LinuxLinux3.2affected
LinuxLinux0 < 3.2unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.51 <= 6.18.*unaffected
LinuxLinux7.2.5 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References