PT-2026-2547 · Linux+2 · Linux Kernel+2
Published
2026-01-13
·
Updated
2026-05-11
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CVE-2025-68815
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 6.18.0-rc7-00105-g7e9f13163c13-dirty
Description
The Linux kernel contains an issue within the ets scheduling class. When a user changes a drr class to a strict one, the code fails to check if that class is present in the active list and remove it. If a strict class, previously in the active list, is changed back to drr, it can be added to the active list twice. This can lead to a system crash, as demonstrated by a 'list add double add' error message. The issue is triggered by specific
tc commands followed by ping commands.Recommendations
Update to Linux kernel version 6.18.0-rc7-00105-g7e9f13163c13-dirty or a later version that includes the fix.
Exploit
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu