CVE-2026-99167None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: net/sched: fix use-after-free in __tcf_action_put() __tcf_action_put() decrements the reference count before decrementing the binding count. Another thread can free th…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
In the Linux kernel, the following vulnerability has been resolved:
net/sched: fix use-after-free in __tcf_action_put()
__tcf_action_put() decrements the reference count before decrementing the binding count. Another thread can free the action between these operations, causing the binding-count update to access freed memory. KASAN reports it as:
BUG: KASAN: slab-use-after-free in __tcf_action_put+0x327/0x340 Write of size 4 at addr ff11000000d46420 by task tc-put-pause/64
Hold the action IDR mutex across both counter updates and IDR removal, keeping cleanup outside the lock.
Linux >= 16af6067392c40e454e49eec834843ab03643d96 < 2465d27ef90de9105c2bffb6c35f8ce08918e642Linux >= 16af6067392c40e454e49eec834843ab03643d96 < 2e012e431aa271ef3c84206f48854f539c03bff0Linux >= 16af6067392c40e454e49eec834843ab03643d96 < 7b16eb911091aae237a8673da94e4dfb9cd21d54Linux 4.19Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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