CVE-2025-39886 bpf: Tell memcg to use allow_spinning=false path in bpf_timer_init()

In the Linux kernel, the following vulnerability has been resolved: bpf: Tell memcg to use allowspinning=false path in bpftimerinit Currently, calling bpfmapkmallocnode from bpfasyncinit can cause various locking issues; see the following stack trace edited for style as one example: ... 10.011566...

PT-2023-33299 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions 3.14 through 5.10.158 Description: The issue is related to a possible use-after-free in the memcg write event control function. The actual impact and attack plausibility have not yet been proven. Recommendations: For Lin...