{"id":"CVE-2025-39956","revision":null,"records":[{"revision":"04ff89c5341444a38914112d6b9f1778","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-39956","aliases":[],"title":"igc: don't fail igc_probe() on LED setup error","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nigc: don't fail igc_probe() on LED setup error\n\nWhen igc_led_setup() fails, igc_probe() fails and triggers kernel panic\nin free_netdev() since unregister_netdev() is not called. [1]\nThis behavior can be tested using fault-injection framework, especially\nthe failslab feature. [2]\n\nSince LED support is not mandatory, treat LED setup failures as\nnon-fatal and continue probe with a warning message, consequently\navoiding the kernel panic.\n\n[1]\n kernel BUG at net/core/dev.c:12047!\n Oops: invalid opcode: 0000 [#1] SMP NOPTI\n CPU: 0 UID: 0 PID: 937 Comm: repro-igc-led-e Not tainted 6.17.0-rc4-enjuk-tnguy-00865-gc4940196ab02 #64 PREEMPT(voluntary)\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n RIP: 0010:free_netdev+0x278/0x2b0\n [...]\n Call Trace:\n  <TASK>\n  igc_probe+0x370/0x910\n  local_pci_probe+0x3a/0x80\n  pci_device_probe+0xd1/0x200\n [...]\n\n[2]\n #!/bin/bash -ex\n\n FAILSLAB_PATH=/sys/kernel/debug/failslab/\n DEVICE=0000:00:05.0\n START_ADDR=$(grep \" igc_led_setup\" /proc/kallsyms \\\n         | awk '{printf(\"0x%s\", $1)}')\n END_ADDR=$(printf \"0x%x\" $((START_ADDR + 0x100)))\n\n echo $START_ADDR > $FAILSLAB_PATH/require-start\n echo $END_ADDR > $FAILSLAB_PATH/require-end\n echo 1 > $FAILSLAB_PATH/times\n echo 100 > $FAILSLAB_PATH/probability\n echo N > $FAILSLAB_PATH/ignore-gfp-wait\n\n echo $DEVICE > /sys/bus/pci/drivers/igc/bind","state":0,"publishedAt":"2025-10-09T09:47:34.253+00:00","modifiedAt":"2026-10-15T22:02:33.822+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/intel/igc/igc.h\",\n                        \"drivers/net/ethernet/intel/igc/igc_main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"ea578703b03d5d651b091c39f717dc829155b520\",\n                            \"lessThan\": \"bec504867acc7315de9cd96ef9161fa52a25abe8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ea578703b03d5d651b091c39f717dc829155b520\",\n                            \"lessThan\": \"f05e82d8553232cef150a6dbb70ed67d162abb2b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"ea578703b03d5d651b091c39f717dc829155b520\",\n                            \"lessThan\": \"528eb4e19ec0df30d0c9ae4074ce945667dde919\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/intel/igc/igc.h\",\n                        \"drivers/net/ethernet/intel/igc/igc_main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.9\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.49\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.16.9\",\n                            \"lessThanOrEqual\": \"6.16.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/bec504867acc7315de9cd96ef9161fa52a25abe8","https://git.kernel.org/stable/c/f05e82d8553232cef150a6dbb70ed67d162abb2b","https://git.kernel.org/stable/c/528eb4e19ec0df30d0c9ae4074ce945667dde919"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-39956","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-39956","identifiers":["CVE-2025-39956"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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