CVE-2026-74272None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: cxl/region: Resolve region deletion races Sungwoo noticed that the sysfs trigger to delete a region may try to delete a region multiple times. It also has no exclusion…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 21.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
0.2% → 0.2%
In the Linux kernel, the following vulnerability has been resolved:
cxl/region: Resolve region deletion races
Sungwoo noticed that the sysfs trigger to delete a region may try to delete a region multiple times. It also has no exclusion relative to the kernel releasing the region via CXL root device teardown.
Instead of installing new cxl root devres actions per region, use the existing root decoder unregistration event to remove all remaining regions. An xarray of regions replaces a devres list of regions.
This handles 3 separate issues with the old approach:
1/ sysfs users racing to delete the same region: no longer possible now that the regions_lock is held over the lookup and deletion.
2/ multiple actions triggering deletion of the same region: solved by erasing regions while holding @regions_lock, and only proceeding on successful erasure.
3/ userspace racing devres_release_all() to trigger the devres not found warning: solved by sysfs unregistration not requiring a release action
Linux >= 779dd20cfb56c510f89877cca45529fa9f8bc450 < 441250eea84608c6c2dbd7f00c61df32836ac97dLinux >= 779dd20cfb56c510f89877cca45529fa9f8bc450 < c478810c4ce7216261fc1b6ca5180adcda26b1a1Linux >= 779dd20cfb56c510f89877cca45529fa9f8bc450 < be44c1c04f85d7b7ac1c597a30b443bbd346acbdLinux >= 779dd20cfb56c510f89877cca45529fa9f8bc450 < 4dd86ca99ffcc413cbf79063fd9956ef54e0ca91Linux 6.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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