Advisory severityMedium5.5Vendor: LowRed Hat Linux

Medium [CVE-2026-68150] fix emergency thaw double-unlock of s_umount

This medium-severity Red Hat Linux advisory covers CVE-2026-68150.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-68150 Source published Aug 10, 2026Source updated Aug 10, 2026

VulniPulse record published Aug 12, 2026Record updated Aug 14, 2026

CVE-2026-68150

Affected products & platforms

Red Hat LinuxUnclassified

Open source advisory

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Summary

In the Linux kernel, the following vulnerability has been resolved: fs/super: fix emergency thaw double-unlock of s_umount do_thaw_all() iterates over all superblocks via __iterate_supers() with SUPER_ITER_EXCL, which acquires s_umount exclusively before calling the callback and releases it afterwards.

However, the callback do_thaw_all_callback() calls thaw_super_locked() which unconditionally releases s_umount on every code path.

Affected versions

< 182.601148
< 182.601865
< 182.602375
< 182.603817
< 182.604578
< 182.604864
< 7.2.0-rc4
< 182.605711
< 1.13.0-1kylin1
< 182.606417
< 182.606750
< 182.607076
< 182.608563
< 182.609007
< 182.609595
< 182.610283
< 182.610847
< 182.611414
< 182.612009
< 182.612670
< 182.613146
< 182.613722
< 182.613946
< 182.614130

Official advisory · high-confidence parse· fetched 3 days ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

Official advisory · high-confidence parse· fetched 3 days ago·verify at source

Mitigation

The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.

Official advisory · high-confidence parse· fetched 3 days ago·verify at source

Discussion(0)

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