Answer in brief
CVE-2025-21680 records a High severity (CVSS 7.8) vulnerability in pktgen: Avoid out-of-bounds access in get_imix_entries. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=52a62f8603f97e720882c8f5aff2767ac6a11d5f <3450092cc2d1c311c5ea92a2486daa2a33520ea5 || >=52a62f8603f97e720882c8f5aff2767ac6a11d5f <e5d24a7074dcd0c7e76b7e7e4efbbe7418d62486 || >=52a62f8603f97e720882c8f5aff2767ac6a11d5f <7cde21f52042aa2e29a654458166b873d2ae66b3 || >=52a62f8603f97e720882c8f5aff2767ac6a11d5f <1a9b65c672ca9dc4ba52ca2fd54329db9580ce29 || >=52a62f8603f97e720882c8f5aff2767ac6a11d5f <76201b5979768500bca362871db66d77cb4c225e | 3450092cc2d1c311c5ea92a2486daa2a33520ea5, e5d24a7074dcd0c7e76b7e7e4efbbe7418d62486, 7cde21f52042aa2e29a654458166b873d2ae66b3, 1a9b65c672ca9dc4ba52ca2fd54329db9580ce29, 76201b5979768500bca362871db66d77cb4c225e |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Jan 31, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: pktgen: Avoid out-of-bounds access in get_imix_entries Passing a sufficient amount of imix entries leads to invalid access to the pkt_dev->imix_entries array because of the incorrect boundary check. UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24 index 20 is out of range for type 'imix_pkt [20]' CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dump_stack_lvl lib/dump_stack.c:117 __ubsan_handle_out_of_bounds lib/ubsan.c:429 get_imix_entries net/core/pktgen.c:874 pktgen_if_write net/core/pktgen.c:1063 pde_write fs/proc/inode.c:334 proc_reg_write fs/proc/inode.c:346 vfs_write fs/read_write.c:593 ksys_write fs/read_write.c:644 do_syscall_64 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130 Found by Linux Verification Center (linuxtesting.org) with SVACE. [ fp: allow to fill the array completely; minor changelog cleanup ]
Quoted source text, attributed separately from HOL analysis.