CVE-2024-50138
- Source
- https://cve.org/CVERecord?id=CVE-2024-50138
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50138.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-50138
- Downstream
- Related
- Published
- 2024-11-05T17:11:01Z
- Modified
- 2026-08-12T03:51:10Z
- Summary
- bpf: Use raw_spinlock_t in ringbuf
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
bpf: Use raw_spinlock_t in ringbuf
The function __bpf_ringbuf_reserve is invoked from a tracepoint, which disables preemption. Using spinlock_t in this context can lead to a "sleep in atomic" warning in the RT variant. This issue is illustrated in the example below:
BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 556208, name: test_progs preempt_count: 1, expected: 0 RCU nest depth: 1, expected: 1 INFO: lockdep is turned off. Preemption disabled at: [] migrate_enable+0xc0/0x39c CPU: 7 PID: 556208 Comm: test_progs Tainted: G Hardware name: Qualcomm SA8775P Ride (DT) Call trace: dump_backtrace+0xac/0x130 show_stack+0x1c/0x30 dump_stack_lvl+0xac/0xe8 dump_stack+0x18/0x30 __might_resched+0x3bc/0x4fc rt_spin_lock+0x8c/0x1a4 __bpf_ringbuf_reserve+0xc4/0x254 bpf_ringbuf_reserve_dynptr+0x5c/0xdc bpf_prog_ac3d15160d62622a_test_read_write+0x104/0x238 trace_call_bpf+0x238/0x774 perf_call_bpf_enter.isra.0+0x104/0x194 perf_syscall_enter+0x2f8/0x510 trace_sys_enter+0x39c/0x564 syscall_trace_enter+0x220/0x3c0 do_el0_svc+0x138/0x1dc el0_svc+0x54/0x130 el0t_64_sync_handler+0x134/0x150 el0t_64_sync+0x17c/0x180
Switch the spinlock to raw_spinlock_t to avoid this error.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50138.json" }- References
-
- https://git.kernel.org/stable/c/5eb34999d118e69a20dc0c6556f315fcb0a1f8d3
- https://git.kernel.org/stable/c/8b62645b09f870d70c7910e7550289d444239a46
- https://git.kernel.org/stable/c/ca30e682e5d6de44d12c4610767811c9a21d59ba
- https://git.kernel.org/stable/c/f9543375d9b150b2bcf16bb182e6b62309db0888
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/50xxx/CVE-2024-50138.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-50138
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced457f44363a8894135c85b7a9afd2bd8196db24abFixed5eb34999d118e69a20dc0c6556f315fcb0a1f8d3Fixedf9543375d9b150b2bcf16bb182e6b62309db0888Fixedca30e682e5d6de44d12c4610767811c9a21d59baFixed8b62645b09f870d70c7910e7550289d444239a46