I have confirmed the new kernel fixes the issue:
$ uname -a
Linux sec 5.15.0-198-generic #208-Ubuntu SMP Fri Sep 4 10:22:38 UTC 2026 x86_64
x86_64 x86_64 GNU/Linux
# While the reproduction for loop was running:
jake@sec:~$ sudo awk '/bpf_jit/{s+=$2} END{printf "%.1f MiB in %d
regions\n",s/1048576,NR}' /proc/vmallocinfo
1.5 MiB in 728 regions
jake@sec:~$ sudo awk '/bpf_jit/{s+=$2} END{printf "%.1f MiB in %d
regions\n",s/1048576,NR}' /proc/vmallocinfo
1.5 MiB in 728 regions
jake@sec:~$ sudo awk '/bpf_jit/{s+=$2} END{printf "%.1f MiB in %d
regions\n",s/1048576,NR}' /proc/vmallocinfo
1.5 MiB in 728 regions
jake@sec:~$ sudo awk '/bpf_jit/{s+=$2} END{printf "%.1f MiB in %d
regions\n",s/1048576,NR}' /proc/vmallocinfo
1.5 MiB in 726 regions
jake@sec:~$ sudo awk '/bpf_jit/{s+=$2} END{printf "%.1f MiB in %d
regions\n",s/1048576,NR}' /proc/vmallocinfo
1.5 MiB in 726 regions
jake@sec:~$ sudo awk '/bpf_jit/{s+=$2} END{printf "%.1f MiB in %d
regions\n",s/1048576,NR}' /proc/vmallocinfo
1.5 MiB in 729 regions
jake@sec:~$ sudo awk '/bpf_jit/{s+=$2} END{printf "%.1f MiB in %d
regions\n",s/1048576,NR}' /proc/vmallocinfo
1.5 MiB in 730 regions
jake@sec:~$ sudo awk '/bpf_jit/{s+=$2} END{printf "%.1f MiB in %d
regions\n",s/1048576,NR}' /proc/vmallocinfo
1.5 MiB in 727 regions
jake@sec:~$ sudo awk '/bpf_jit/{s+=$2} END{printf "%.1f MiB in %d
regions\n",s/1048576,NR}' /proc/vmallocinfo
1.5 MiB in 726 regions
** Tags removed: verification-needed-jammy-linux
** Tags added: verification-done-jammy-linux
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https://bugs.launchpad.net/bugs/2164699
Title:
seccomp filter leak in bpf_jit due to unreaped zombie process
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