{"id":"AZL-102357","summary":"CVE-2026-92485 affecting package kernel 6.6.150.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix WARNING in bpf_tracing_link_release\n\nThe trampoline could be corrupted by the blindly\n'tr-\u003eflags = BPF_TRAMP_F_TAIL_CALL_CTX' in verifier.\n\n1. A fexit attached to a tail_call_reachable prog. 'tr-\u003eflags' became\n   'BPF_TRAMP_F_CALL_ORIG | BPF_TRAMP_F_TAIL_CALL_CTX'. And, the\n   trampoline would poke the target prog's nop insn using jmp insn instead\n   of call insn.\n2. Another fexit loaded with the same tail_call_reachable prog target.\n   'tr-\u003eflags' became 'BPF_TRAMP_F_TAIL_CALL_CTX'.\n3. Close the first fexit link. Due to no BPF_TRAMP_F_CALL_ORIG in\n   'tr-\u003eflags', the trampoline will fail to restore the prog's nop insn\n   using call insn.\n\n[    3.410719] WARNING: kernel/bpf/syscall.c:3551 at bpf_tracing_link_release+0x53/0x60, CPU#1: test_progs/98\n...\n[    3.428793]  bpf_link_free+0x58/0x130\n[    3.429293]  bpf_link_release+0x23/0x30\n\nFix the warning by updating 'tr-\u003eflags' with '|=' and lock.","modified":"2026-09-20T05:33:47Z","published":"2026-09-17T17:17:50Z","upstream":["CVE-2026-92485"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92485"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.150.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-102357.json"}}],"schema_version":"1.9.0"}