{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-38311",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T04:51:24.003Z",
        "datePublished": "2025-07-10T07:42:20.006Z",
        "dateUpdated": "2026-05-23T15:59:26.621Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T15:59:26.621Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niavf: get rid of the crit lock\n\nGet rid of the crit lock.\nThat frees us from the error prone logic of try_locks.\n\nThanks to netdev_lock() by Jakub it is now easy, and in most cases we were\nprotected by it already - replace crit lock by netdev lock when it was not\nthe case.\n\nLockdep reports that we should cancel the work under crit_lock [splat1],\nand that was the scheme we have mostly followed since [1] by Slawomir.\nBut when that is done we still got into deadlocks [splat2]. So instead\nwe should look at the bigger problem, namely \"weird locking/scheduling\"\nof the iavf. The first step to fix that is to remove the crit lock.\nI will followup with a -next series that simplifies scheduling/tasks.\n\nCancel the work without netdev lock (weird unlock+lock scheme),\nto fix the [splat2] (which would be totally ugly if we would kept\nthe crit lock).\n\nExtend protected part of iavf_watchdog_task() to include scheduling\nmore work.\n\nNote that the removed comment in iavf_reset_task() was misplaced,\nit belonged to inside of the removed if condition, so it's gone now.\n\n[splat1] - w/o this patch - The deadlock during VF removal:\n     WARNING: possible circular locking dependency detected\n     sh/3825 is trying to acquire lock:\n      ((work_completion)(&(&adapter->watchdog_task)->work)){+.+.}-{0:0}, at: start_flush_work+0x1a1/0x470\n          but task is already holding lock:\n      (&adapter->crit_lock){+.+.}-{4:4}, at: iavf_remove+0xd1/0x690 [iavf]\n          which lock already depends on the new lock.\n\n[splat2] - when cancelling work under crit lock, w/o this series,\n\t   see [2] for the band aid attempt\n    WARNING: possible circular locking dependency detected\n    sh/3550 is trying to acquire lock:\n    ((wq_completion)iavf){+.+.}-{0:0}, at: touch_wq_lockdep_map+0x26/0x90\n        but task is already holding lock:\n    (&dev->lock){+.+.}-{4:4}, at: iavf_remove+0xa6/0x6e0 [iavf]\n        which lock already depends on the new lock.\n\n[1] fc2e6b3b132a (\"iavf: Rework mutexes for better synchronisation\")\n[2] https://github.com/pkitszel/linux/commit/52dddbfc2bb60294083f5711a158a"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/intel/iavf/iavf.h",
                        "drivers/net/ethernet/intel/iavf/iavf_ethtool.c",
                        "drivers/net/ethernet/intel/iavf/iavf_main.c"
                    ],
                    "versions": [
                        {
                            "version": "d1639a17319ba78a018280cd2df6577a7e5d9fab",
                            "lessThan": "620ab4d6215de0b25227f9fff1a8c7fb66837cb8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "d1639a17319ba78a018280cd2df6577a7e5d9fab",
                            "lessThan": "120f28a6f314fef7f282c99f196923fe44081cad",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "2647ff59c52ef42c853c905817ed1a7f092d59a5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "63d14a43128540016ebd4f7fa3ad3a2f0d6e642c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.1.42",
                            "lessThan": "6.2",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4.7",
                            "lessThan": "6.5",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/net/ethernet/intel/iavf/iavf.h",
                        "drivers/net/ethernet/intel/iavf/iavf_ethtool.c",
                        "drivers/net/ethernet/intel/iavf/iavf_main.c"
                    ],
                    "versions": [
                        {
                            "version": "6.5",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.5",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.15.3",
                            "lessThanOrEqual": "6.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.5",
                                    "versionEndExcluding": "6.15.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.5",
                                    "versionEndExcluding": "6.16"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1.42"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4.7"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/620ab4d6215de0b25227f9fff1a8c7fb66837cb8"
                },
                {
                    "url": "https://git.kernel.org/stable/c/120f28a6f314fef7f282c99f196923fe44081cad"
                }
            ],
            "title": "iavf: get rid of the crit lock",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}