Answer in brief
CVE-2026-89843 records a Unknown severity vulnerability in scsi: qla2xxx: Zero-init bsg stack buffers to avoid info leak. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <1c820d0900e4aacd5020b989159f6b4b2f7d0d6a || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <26bc6a2c235a70bfc9b6de412600208aca820e20 || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <5ab32dff910291b5e6bf6223f8a4003536c1800a || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <947c6bfcf7f5ec924995bec43e3108b98c75b44e || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <708c0ec1e09c52fee24b74ce9398bf3f8d1c83fd || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <4fe5790674097897a1af1367d1e384f7e5a62fb7 || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <7881faf862ee301ecfe3adc0725bd2fa0021cd95 || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <b93d3bb3afe1b44489927de1eb4e66e8536a5935 | 1c820d0900e4aacd5020b989159f6b4b2f7d0d6a, 26bc6a2c235a70bfc9b6de412600208aca820e20, 5ab32dff910291b5e6bf6223f8a4003536c1800a, 947c6bfcf7f5ec924995bec43e3108b98c75b44e, 708c0ec1e09c52fee24b74ce9398bf3f8d1c83fd, 4fe5790674097897a1af1367d1e384f7e5a62fb7, 7881faf862ee301ecfe3adc0725bd2fa0021cd95, b93d3bb3afe1b44489927de1eb4e66e8536a5935 |
| Linux/Linuxgeneric | 3.2 | Not reported |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Zero-init bsg stack buffers to avoid info leak Several bsg handlers stage their request/reply in an uninitialized 256-byte on-stack buffer (uint8_t bsg[DMA_POOL_SIZE]) and fill it via sg_copy_to_buffer(), which only copies as many bytes as the user-supplied request payload. When the request is shorter than the structure, the remainder of the buffer is left holding stale stack data. qla2x00_read_fru_status() and qla2x00_read_i2c() then copy the full structure back to the reply payload with sg_copy_from_buffer(), leaking the uninitialized stack bytes to user space. The write/update paths do not copy the buffer back, but can feed uninitialized fields to the device. Zero the stack buffer at declaration in all five handlers, mirroring the heap kzalloc() approach, so short requests can no longer expose stale memory.
Quoted source text, attributed separately from HOL analysis.