{"id":"CVE-2025-21680","summary":"pktgen: Avoid out-of-bounds access in get_imix_entries","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npktgen: Avoid out-of-bounds access in get_imix_entries\n\nPassing a sufficient amount of imix entries leads to invalid access to the\npkt_dev-\u003eimix_entries array because of the incorrect boundary check.\n\nUBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24\nindex 20 is out of range for type 'imix_pkt [20]'\nCPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996)\nCall Trace:\n\u003cTASK\u003e\ndump_stack_lvl lib/dump_stack.c:117\n__ubsan_handle_out_of_bounds lib/ubsan.c:429\nget_imix_entries net/core/pktgen.c:874\npktgen_if_write net/core/pktgen.c:1063\npde_write fs/proc/inode.c:334\nproc_reg_write fs/proc/inode.c:346\nvfs_write fs/read_write.c:593\nksys_write fs/read_write.c:644\ndo_syscall_64 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\n\n[ fp: allow to fill the array completely; minor changelog cleanup ]","modified":"2026-04-02T12:45:11.584513Z","published":"2025-01-31T11:25:40.831Z","related":["ALSA-2025:20095","SUSE-SU-2025:01839-1","SUSE-SU-2025:01840-1","SUSE-SU-2025:01851-1","SUSE-SU-2025:01853-1","SUSE-SU-2025:01930-1","SUSE-SU-2025:01932-1","SUSE-SU-2025:01944-1","SUSE-SU-2025:01948-1","SUSE-SU-2025:01957-1","SUSE-SU-2025:0784-1","SUSE-SU-2025:0847-1","SUSE-SU-2025:0856-1","SUSE-SU-2025:0955-1","SUSE-SU-2025:20190-1","SUSE-SU-2025:20192-1","SUSE-SU-2025:20260-1","SUSE-SU-2025:20270-1","SUSE-SU-2025:20381-1","SUSE-SU-2025:20382-1","SUSE-SU-2025:20383-1","SUSE-SU-2025:20384-1","SUSE-SU-2025:20386-1","SUSE-SU-2025:20387-1","SUSE-SU-2025:20388-1","SUSE-SU-2025:20389-1","SUSE-SU-2025:20397-1","SUSE-SU-2025:20398-1","SUSE-SU-2025:20399-1","SUSE-SU-2025:20400-1","SUSE-SU-2025:20401-1","SUSE-SU-2025:20402-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21680.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1a9b65c672ca9dc4ba52ca2fd54329db9580ce29"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3450092cc2d1c311c5ea92a2486daa2a33520ea5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/76201b5979768500bca362871db66d77cb4c225e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7cde21f52042aa2e29a654458166b873d2ae66b3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e5d24a7074dcd0c7e76b7e7e4efbbe7418d62486"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21680.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21680"},{"type":"PACKAGE","url":"https://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":[{"introduced":"52a62f8603f97e720882c8f5aff2767ac6a11d5f"},{"fixed":"3450092cc2d1c311c5ea92a2486daa2a33520ea5"},{"fixed":"e5d24a7074dcd0c7e76b7e7e4efbbe7418d62486"},{"fixed":"7cde21f52042aa2e29a654458166b873d2ae66b3"},{"fixed":"1a9b65c672ca9dc4ba52ca2fd54329db9580ce29"},{"fixed":"76201b5979768500bca362871db66d77cb4c225e"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21680.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}