CVE-2026-89858
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.
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-25)
- Published
- Modified
- Record from
- the NVD, synced
References
- https://git.kernel.org/stable/c/047f1f7ee6f85bde28abfdda9fa550191ddc0532
- https://git.kernel.org/stable/c/7b22b4cb8822805cef7ba618da6f76e1474d68bd
- https://git.kernel.org/stable/c/7e3154c97ec15460f715dbbe4097c255cce110b1
- https://git.kernel.org/stable/c/a9706d5e754e77515a92bb532bd0d73644979a1f
- https://git.kernel.org/stable/c/af733bbfcf667af1871a2735fba2835b0da71efb