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CVE-2026-89865— scsi: qla2xxx: Zero SFP DMA buffer in FRU/I2C bsg handlers

一分钟漏洞结论

影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

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 d

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一、 漏洞 CVE-2026-89865 基础信息

漏洞信息

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Vulnerability Title
scsi: qla2xxx: Zero SFP DMA buffer in FRU/I2C bsg handlers
来源: CVE Program / CVE List V5
Vulnerability Description
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.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
Linux Linux 697a4bc69159c3396035b0506ffa55c4b2d0b1f4 ~ a476377a66897549dd49bee319f4df66623417b7 -
Linux Linux 3.2 -

二、漏洞 CVE-2026-89865 的公开POC

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三、漏洞 CVE-2026-89865 的情报信息

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CVE-2026-89865 其他参考 (8)

同批安全公告 · Linux · 2026-09-16 · 共 276 条

CVE-2026-89859 scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak
CVE-2026-89877 media: saa7164: fix cleanup on resource allocation failure
CVE-2026-89875 media: ti: vpe: quiesce overflow recovery before freeing streams
CVE-2026-89876 media: tda18250: fix possible integer overflow
CVE-2026-89874 media: v4l2-async: avoid deleting unlinked ASC entry on link error
CVE-2026-89872 media: v4l2-fwnode: Fix fwnode leak in v4l2_fwnode_parse_link
CVE-2026-89873 media: v4l2-ctrls: validate HEVC EXT SPS RPS counts
CVE-2026-89871 media: video-i2c: fix kthread error pointer left in kthread_vid_cap on failure
CVE-2026-89870 media: zoran: Avoid freeing a registered video_device twice
CVE-2026-89869 media: qcom: iris: use disable_irq() during power-off
CVE-2026-89868 media: chips-media: wave5: Add timeout while stop_streaming
CVE-2026-89867 media: chips-media: wave5: Defer job_finish() only when a DEC_PIC was queued
CVE-2026-89866 Chips-Media Wave5 EOS前恢复设备
CVE-2026-89864 scsi: qla2xxx: Bound i2c->length in I2C bsg handlers
CVE-2026-89863 scsi: qla2xxx: edif: Fix NULL pointer deref in RX SA delete check
CVE-2026-89862 scsi: qla2xxx: Fix BSG job leak on validate flash image error path
CVE-2026-89861 scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition()
CVE-2026-89860 scsi: qla2xxx: Initialize NVMe abort_work once at submission
CVE-2026-89849 scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path
CVE-2026-89847 scsi: qla2xxx: Avoid double completion in async IOCB timeout

显示前 20 条，共 276 条。 查看全部 → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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