{"id":"DEBIAN-CVE-2023-52621","details":"In the Linux kernel, the following vulnerability has been resolved:  bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers  These three bpf_map_{lookup,update,delete}_elem() helpers are also available for sleepable bpf program, so add the corresponding lock assertion for sleepable bpf program, otherwise the following warning will be reported when a sleepable bpf program manipulates bpf map under interpreter mode (aka bpf_jit_enable=0):    WARNING: CPU: 3 PID: 4985 at kernel/bpf/helpers.c:40 ......   CPU: 3 PID: 4985 Comm: test_progs Not tainted 6.6.0+ #2   Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) ......   RIP: 0010:bpf_map_lookup_elem+0x54/0x60   ......   Call Trace:    \u003cTASK\u003e    ? __warn+0xa5/0x240    ? bpf_map_lookup_elem+0x54/0x60    ? report_bug+0x1ba/0x1f0    ? handle_bug+0x40/0x80    ? exc_invalid_op+0x18/0x50    ? asm_exc_invalid_op+0x1b/0x20    ? __pfx_bpf_map_lookup_elem+0x10/0x10    ? rcu_lockdep_current_cpu_online+0x65/0xb0    ? rcu_is_watching+0x23/0x50    ? bpf_map_lookup_elem+0x54/0x60    ? __pfx_bpf_map_lookup_elem+0x10/0x10    ___bpf_prog_run+0x513/0x3b70    __bpf_prog_run32+0x9d/0xd0    ? __bpf_prog_enter_sleepable_recur+0xad/0x120    ? __bpf_prog_enter_sleepable_recur+0x3e/0x120    bpf_trampoline_6442580665+0x4d/0x1000    __x64_sys_getpgid+0x5/0x30    ? do_syscall_64+0x36/0xb0    entry_SYSCALL_64_after_hwframe+0x6e/0x76    \u003c/TASK\u003e","modified":"2026-09-15T09:02:48.209615661Z","published":"2024-03-26T18:15:08.817Z","upstream":["CVE-2023-52621"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-52621"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.82-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52621.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.7.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52621.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.7.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52621.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}