Recurring Bun segfault crashes (~3x/week) on Linux x64 AMD

Bug Report

Claude Code is crashing due to segmentation faults in the bundled Bun runtime (v1.3.10). This has happened 3 times in the past week. Sessions were not particularly long-running.

Claude Code Version

2.1.51

Crash Output

Bun v1.3.10 (1423d3c8) Linux x64 (baseline)
Linux Kernel v6.8.0 | glibc v2.39
CPU: sse42 popcnt avx avx2
Args: "claude" "--dangerously-skip-permissions"
Features: Bun.stderr(2) Bun.stdin(2) Bun.stdout(2) abort_signal(922) fetch(1425) jsc spawn(1442) standalone_executable process_dlopen(2) yaml_parse(344)
Builtins: "bun:main" "node:assert" "node:async_hooks" "node:buffer" "node:child_process" "node:constants" "node:crypto" "node:events" "node:fs" "node:fs/promises" "node:http" "node:https" "node:module" "node:net" "node:os" "node:path" "node:path/posix" "node:path/win32" "node:perf_hooks" "node:process" "node:stream" "node:timers/promises" "node:tls" "node:tty" "node:url" "node:util" "node:zlib" "node:worker_threads" "undici" "ws"
Elapsed: 15700825ms | User: 632217ms | Sys: 113404ms
RSS: 0.02ZB | Peak: 1.14GB | Commit: 0.02ZB | Faults: 2 | Machine: 16.77GB

panic(main thread): Segmentation fault at address 0x7FFCEDDCF925

Crash Report URL (Bun)

https://bun.report/1.3.10/B_11423d3cmgkgEuhogC4oi5wE+ypRslpuiEslpuiEslpuiEslpuiE_____________m8q7hEA24//B3tjskS

Environment

• OS: Ubuntu, Linux 6.8.0-100-generic x86_64
• CPU: AMD Ryzen 5 5600GT (Cezanne), Proxmox QEMU/KVM VM
• CPU Features: sse42 popcnt avx avx2 (baseline)
• glibc: 2.39
• RAM: 16.77GB
• System Bun: 1.3.9
• Claude Code bundled Bun: 1.3.10

Frequency

~3 crashes per week. Not correlated with session length or heavy usage. Both versions (Bun and Claude Code) are at their latest available versions.

Notes

• Also reported upstream to Bun: https://github.com/oven-sh/bun/issues/27391
• The RSS value 0.02ZB in crash output suggests memory tracking corruption prior to the crash
• Running in a VM (Proxmox/QEMU) — unclear if virtualization is a factor