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CVE-2026-90045— USB: gadget: ffs: fix mm lifetime handling

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

In the Linux kernel, the following vulnerability has been resolved: USB: gadget: ffs: fix mm lifetime handling io_data stores a pointer to the submitting task's mm_struct, but does not currently hold a reference to it while async requests are pending. This can

AI Predicted 5.5 Difficulty: Moderate
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I. Basic Information for CVE-2026-90045

Vulnerability Information

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Vulnerability Title
USB: gadget: ffs: fix mm lifetime handling
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: USB: gadget: ffs: fix mm lifetime handling io_data stores a pointer to the submitting task's mm_struct, but does not currently hold a reference to it while async requests are pending. This can result in a use-after-free if the task exits before completion handling finishes. Take a reference with mmgrab() when queuing the read request and release it with mmdrop() on request completion.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ~ f3d31484b3f26d63c09e5569ebfaa1079a17f171 -
Linux Linux 6.18.51 ~ 6.18.* -

II. Public POCs for CVE-2026-90045

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III. Intelligence Information for CVE-2026-90045

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Other References for CVE-2026-90045 (3)

Same Patch Batch · Linux · 2026-09-16 · 276 CVEs total

CVE-2026-89859 scsi: qla2xxx: Zero dport diagnostics buffer to avoid info leak
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 media: chips-media: wave5: Resume device before setting EOS flag
CVE-2026-89865 scsi: qla2xxx: Zero SFP DMA buffer in FRU/I2C bsg handlers
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

Showing top 20 of 276 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-90045

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