Answer in brief
CVE-2026-89865 records a Unknown severity vulnerability in scsi: qla2xxx: Zero SFP DMA buffer in FRU/I2C bsg handlers. 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 <a476377a66897549dd49bee319f4df66623417b7 || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <09703bc7c0be3a7a155b0ff5f21f6765ba3f519c || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <97c45c75f5cdec96b1a4fba8b1d55d0dd01af1e8 || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <84bde5ce4038d9ad811e5c994305bbfcbd7a9f79 || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <581590f560b74399151b3cbc88574424c2f3d2dc || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <b157256c28086c434afd70cc78bf9b4d8caf1276 || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <a5501c42256235523c4dddf799f032dfbf4f4c77 || >=697a4bc69159c3396035b0506ffa55c4b2d0b1f4 <b47d4a1547d9ef21b2e9d1a739fe2204d4be05dc | a476377a66897549dd49bee319f4df66623417b7, 09703bc7c0be3a7a155b0ff5f21f6765ba3f519c, 97c45c75f5cdec96b1a4fba8b1d55d0dd01af1e8, 84bde5ce4038d9ad811e5c994305bbfcbd7a9f79, 581590f560b74399151b3cbc88574424c2f3d2dc, b157256c28086c434afd70cc78bf9b4d8caf1276, a5501c42256235523c4dddf799f032dfbf4f4c77, b47d4a1547d9ef21b2e9d1a739fe2204d4be05dc |
| Linux/Linuxgeneric | 3.2 | Not reported |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 16, 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 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 & 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.
Quoted source text, attributed separately from HOL analysis.