{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-40315", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.186Z", "datePublished": "2025-12-08T00:46:41.896Z", "dateUpdated": "2026-05-23T16:02:03.665Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T16:02:03.665Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_fs: Fix epfile null pointer access after ep enable.\n\nA race condition occurs when ffs_func_eps_enable() runs concurrently\nwith ffs_data_reset(). The ffs_data_clear() called in ffs_data_reset()\nsets ffs->epfiles to NULL before resetting ffs->eps_count to 0, leading\nto a NULL pointer dereference when accessing epfile->ep in\nffs_func_eps_enable() after successful usb_ep_enable().\n\nThe ffs->epfiles pointer is set to NULL in both ffs_data_clear() and\nffs_data_close() functions, and its modification is protected by the\nspinlock ffs->eps_lock. And the whole ffs_func_eps_enable() function\nis also protected by ffs->eps_lock.\n\nThus, add NULL pointer handling for ffs->epfiles in the\nffs_func_eps_enable() function to fix issues" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/usb/gadget/function/f_fs.c" ], "versions": [ { "version": "c9fc422c9a43e3d58d246334a71f3390401781dc", "lessThan": "b00d2572c16e8e59e979960d3383c2ae9cebd195", "status": "affected", "versionType": "git" }, { "version": "0042178a69eb77a979e36a50dcce9794a3140ef8", "lessThan": "1c0dbd240be3f87cac321b14e17979b7e9cb6a8f", "status": "affected", "versionType": "git" }, { "version": "72a8aee863af099d4434314c4536d6c9a61dcf3c", "lessThan": "9ec40fba7357df2d36f4c2e2f3b9b1a4fba0a272", "status": "affected", "versionType": "git" }, { "version": "ebe2b1add1055b903e2acd86b290a85297edc0b3", "lessThan": "c53e90563bc148e4e0ad09fe130ba2246d426ea6", "status": "affected", "versionType": "git" }, { "version": "ebe2b1add1055b903e2acd86b290a85297edc0b3", "lessThan": "fc1141a530dfc91f0ee19b7f422a2d24829584bc", "status": "affected", "versionType": "git" }, { "version": "ebe2b1add1055b903e2acd86b290a85297edc0b3", "lessThan": "d62b808d5c68a931ad0849a00a5e3be3dd7e0019", "status": "affected", "versionType": "git" }, { "version": "ebe2b1add1055b903e2acd86b290a85297edc0b3", "lessThan": "30880e9df27332403dd638a82c27921134b3630b", "status": "affected", "versionType": "git" }, { "version": "ebe2b1add1055b903e2acd86b290a85297edc0b3", "lessThan": "cfd6f1a7b42f62523c96d9703ef32b0dbc495ba4", "status": "affected", "versionType": "git" }, { "version": "32048f4be071f9a6966744243f1786f45bb22dc2", "status": "affected", "versionType": "git" }, { "version": "cfe5f6fd335d882bcc829a1c8a7d462a455c626e", "status": "affected", "versionType": "git" }, { "version": "3e078b18753669615301d946297bafd69294ad2c", "status": "affected", "versionType": "git" }, { "version": "5.4.180", "lessThan": "5.4.302", "status": "affected", "versionType": "semver" }, { "version": "5.10.101", "lessThan": "5.10.247", "status": "affected", "versionType": "semver" }, { "version": "5.15.24", "lessThan": "5.15.197", "status": "affected", "versionType": "semver" }, { "version": "4.14.267", "lessThan": "4.15", "status": "affected", "versionType": "semver" }, { "version": "4.19.230", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "5.16.10", "lessThan": "5.17", "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/usb/gadget/function/f_fs.c" ], "versions": [ { "version": "5.17", "status": "affected" }, { "version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.302", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.247", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.197", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.159", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.117", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.58", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17.8", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18", "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": "5.4.180", "versionEndExcluding": "5.4.302" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.101", "versionEndExcluding": "5.10.247" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.24", "versionEndExcluding": "5.15.197" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.1.159" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.6.117" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.12.58" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.17.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.267" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.230" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b00d2572c16e8e59e979960d3383c2ae9cebd195" }, { "url": "https://git.kernel.org/stable/c/1c0dbd240be3f87cac321b14e17979b7e9cb6a8f" }, { "url": "https://git.kernel.org/stable/c/9ec40fba7357df2d36f4c2e2f3b9b1a4fba0a272" }, { "url": "https://git.kernel.org/stable/c/c53e90563bc148e4e0ad09fe130ba2246d426ea6" }, { "url": "https://git.kernel.org/stable/c/fc1141a530dfc91f0ee19b7f422a2d24829584bc" }, { "url": "https://git.kernel.org/stable/c/d62b808d5c68a931ad0849a00a5e3be3dd7e0019" }, { "url": "https://git.kernel.org/stable/c/30880e9df27332403dd638a82c27921134b3630b" }, { "url": "https://git.kernel.org/stable/c/cfd6f1a7b42f62523c96d9703ef32b0dbc495ba4" } ], "title": "usb: gadget: f_fs: Fix epfile null pointer access after ep enable.", "x_generator": { "engine": "bippy-1.2.0" } } } }