{"id":"CVE-2025-38280","title":"bpf: Avoid __bpf_prog_ret0_warn when jit fails","summary":"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/bp…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= fa9dd599b4dae841924b022768354cfde9affecb < e7fb4ebee6e900899d2b2e5852c3e2eafcbcad66","Linux >= fa9dd599b4dae841924b022768354cfde9affecb < ef92b96530d1731d9ac167bc7c193c683cd78fff","Linux >= fa9dd599b4dae841924b022768354cfde9affecb < 6f639c25bfad17d9fd7379ab91ff9678ea9aac85","Linux >= fa9dd599b4dae841924b022768354cfde9affecb < 2bc6dffb4b72d53d6a6ada510269bf548c3f7ae0","Linux >= fa9dd599b4dae841924b022768354cfde9affecb < 0b9bb52796b239de6792d0d68cdc6eb505ebff96","Linux >= fa9dd599b4dae841924b022768354cfde9affecb < 86bc9c742426a16b52a10ef61f5b721aecca2344","Linux 5124abda3060e2eab506fb14a27acadee3c3e396","Linux 234646dcfc5f531c74ab20595e89eacd62e3611f","Linux >= 4.9.190 < 4.10","Linux >= 4.14.140 < 4.15","Linux 4.16"],"published":"2025-07-10","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:07:00.944Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-38280","references":[{"url":"https://git.kernel.org/stable/c/e7fb4ebee6e900899d2b2e5852c3e2eafcbcad66"},{"url":"https://git.kernel.org/stable/c/ef92b96530d1731d9ac167bc7c193c683cd78fff"},{"url":"https://git.kernel.org/stable/c/6f639c25bfad17d9fd7379ab91ff9678ea9aac85"},{"url":"https://git.kernel.org/stable/c/2bc6dffb4b72d53d6a6ada510269bf548c3f7ae0"},{"url":"https://git.kernel.org/stable/c/0b9bb52796b239de6792d0d68cdc6eb505ebff96"},{"url":"https://git.kernel.org/stable/c/86bc9c742426a16b52a10ef61f5b721aecca2344"}],"tags":["cve.org"],"epss":0.00214,"epssPercentile":0.1169,"ingestedAt":"2026-10-15T05:52:46.091Z","slug":"CVE-2025-38280","body":"## Overview\n\nIn 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 <TASK>\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->jit_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).\n\n## Affected\n\n- `Linux >= fa9dd599b4dae841924b022768354cfde9affecb < e7fb4ebee6e900899d2b2e5852c3e2eafcbcad66`\n- `Linux >= fa9dd599b4dae841924b022768354cfde9affecb < ef92b96530d1731d9ac167bc7c193c683cd78fff`\n- `Linux >= fa9dd599b4dae841924b022768354cfde9affecb < 6f639c25bfad17d9fd7379ab91ff9678ea9aac85`\n- `Linux >= fa9dd599b4dae841924b022768354cfde9affecb < 2bc6dffb4b72d53d6a6ada510269bf548c3f7ae0`\n- `Linux >= fa9dd599b4dae841924b022768354cfde9affecb < 0b9bb52796b239de6792d0d68cdc6eb505ebff96`\n- `Linux >= fa9dd599b4dae841924b022768354cfde9affecb < 86bc9c742426a16b52a10ef61f5b721aecca2344`\n- `Linux 5124abda3060e2eab506fb14a27acadee3c3e396`\n- `Linux 234646dcfc5f531c74ab20595e89eacd62e3611f`\n- `Linux >= 4.9.190 < 4.10`\n- `Linux >= 4.14.140 < 4.15`\n- `Linux 4.16`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}