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CVE-2026-23109
Linux Kernel vulnerability analysis and mitigation

In the Linux kernel, the following vulnerability has been resolved:

fs/writeback: skip AS_NO_DATA_INTEGRITY mappings in wait_sb_inodes()

Above the while() loop in wait_sb_inodes(), we document that we must wait for all pages under writeback for data integrity. Consequently, if a mapping, like fuse, traditionally does not have data integrity semantics, there is no need to wait at all; we can simply skip these inodes.

This restores fuse back to prior behavior where syncs are no-ops. This fixes a user regression where if a system is running a faulty fuse server that does not reply to issued write requests, this causes wait_sb_inodes() to wait forever.


SourceNVD

Related Linux Kernel vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-23395CRITICAL9.1
  • Linux KernelLinux Kernel
  • kernel-rt-64k-debug-devel-matched
NoYesMar 25, 2026
CVE-2026-23399MEDIUM6.5
  • Linux KernelLinux Kernel
  • kernel-rt-64k-debug-devel-matched
NoYesMar 28, 2026
CVE-2026-23398MEDIUM6.5
  • Linux KernelLinux Kernel
  • kernel-abi-stablelists
NoYesMar 26, 2026
CVE-2026-23397MEDIUM4.4
  • Linux KernelLinux Kernel
  • kernel-devel
NoYesMar 26, 2026
CVE-2026-31788N/AN/A
  • Linux KernelLinux Kernel
  • kernel-rt-trace-kvm
NoYesMar 25, 2026

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