{"id":"AZL-64907","summary":"CVE-2025-38280 affecting package kernel for versions less than 6.6.96.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Avoid __bpf_prog_ret0_warn when jit fails\n\nsyzkaller reported an issue:\n\nWARNING: CPU: 3 PID: 217 at kernel/bpf/core.c:2357 __bpf_prog_ret0_warn+0xa/0x20 kernel/bpf/core.c:2357\nModules linked in:\nCPU: 3 UID: 0 PID: 217 Comm: kworker/u32:6 Not tainted 6.15.0-rc4-syzkaller-00040-g8bac8898fe39\nRIP: 0010:__bpf_prog_ret0_warn+0xa/0x20 kernel/bpf/core.c:2357\nCall Trace:\n \u003cTASK\u003e\n bpf_dispatcher_nop_func include/linux/bpf.h:1316 [inline]\n __bpf_prog_run include/linux/filter.h:718 [inline]\n bpf_prog_run include/linux/filter.h:725 [inline]\n cls_bpf_classify+0x74a/0x1110 net/sched/cls_bpf.c:105\n ...\n\nWhen creating bpf program, 'fp-\u003ejit_requested' depends on bpf_jit_enable.\nThis issue is triggered because of CONFIG_BPF_JIT_ALWAYS_ON is not set\nand bpf_jit_enable is set to 1, causing the arch to attempt JIT the prog,\nbut jit failed due to FAULT_INJECTION. As a result, incorrectly\ntreats the program as valid, when the program runs it calls\n`__bpf_prog_ret0_warn` and triggers the WARN_ON_ONCE(1).","modified":"2026-04-01T05:20:26.089455Z","published":"2025-07-10T08:15:26Z","upstream":["CVE-2025-38280"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38280"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.96.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-64907.json"}}],"schema_version":"1.7.5"}