248 lines
13 KiB
JSON
248 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-64594",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-07-19T15:36:31.799Z",
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"datePublished": "2026-08-06T07:13:50.309Z",
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"dateUpdated": "2026-08-17T04:58:16.410Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-17T04:58:16.410Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_fs: initialize reset_work at allocation time\n\nffs_fs_kill_sb() unconditionally calls cancel_work_sync() on\nffs->reset_work when a functionfs instance is unmounted:\n\n\tffs_data_reset(ffs);\n\tcancel_work_sync(&ffs->reset_work);\n\nHowever ffs->reset_work is only ever initialized via INIT_WORK() in\nffs_func_set_alt() and ffs_func_disable(), and only on the\nFFS_DEACTIVATED path. That state is reached solely by ffs_data_closed()\nwhen the instance is mounted with the \"no_disconnect\" option, so for the\ncommon case (no \"no_disconnect\", or mounted and unmounted without ever\nbeing deactivated) reset_work is never initialized.\n\nffs_data_new() allocates the ffs_data with kzalloc_obj() and does not\ninitialize reset_work, and ffs_data_reset()/ffs_data_clear() do not touch\nit either, so reset_work.func is left NULL. cancel_work_sync() on such a\nwork then trips the WARN_ON(!work->func) guard in __flush_work():\n\n WARNING: kernel/workqueue.c:4301 at __flush_work+0x330/0x360, CPU#3: umount\n Call trace:\n __flush_work\n cancel_work_sync\n ffs_fs_kill_sb [usb_f_fs]\n deactivate_locked_super\n deactivate_super\n cleanup_mnt\n __cleanup_mnt\n task_work_run\n exit_to_user_mode_loop\n el0_svc\n\nOn older kernels cancel_work_sync() on a zero-initialized work struct was\na silent no-op, which hid the missing initialization.\n\nInitialize reset_work once in ffs_data_new() so it is always valid for\nthe lifetime of the ffs_data, and drop the now-redundant INIT_WORK()\ncalls from the two deactivation paths."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/usb/gadget/function/f_fs.c"
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],
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"versions": [
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{
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"version": "18d6b32fca3841f7cd9479b4024abd8a9b299281",
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"lessThan": "7fe895e0a9651518c4fc082487da770ff9c14c7f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "18d6b32fca3841f7cd9479b4024abd8a9b299281",
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"lessThan": "0de6ebbabfbbc9c28350283dc97d8a519d5c6dd7",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "18d6b32fca3841f7cd9479b4024abd8a9b299281",
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"lessThan": "cb19e54ebe9baf3c3243083ade65c937339ccb7b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "18d6b32fca3841f7cd9479b4024abd8a9b299281",
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"lessThan": "d5631081be07f20e764d3cb5c98ac0a1004fba51",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "18d6b32fca3841f7cd9479b4024abd8a9b299281",
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"lessThan": "c36393b0d14e1e9783888f821ffe29381b8f46dc",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "18d6b32fca3841f7cd9479b4024abd8a9b299281",
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"lessThan": "69faa3779250df14f51d5084f938a99809546e52",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "18d6b32fca3841f7cd9479b4024abd8a9b299281",
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"lessThan": "ba1867999dbc4085e6d8c52ac5266005b8b2bf07",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "18d6b32fca3841f7cd9479b4024abd8a9b299281",
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"lessThan": "3137b243c93982fe3460335e12f9247739766e10",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/usb/gadget/function/f_fs.c"
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],
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"versions": [
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{
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"version": "4.0",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.0",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.261",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.212",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.178",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.145",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.97",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.40",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.4",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.0",
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"versionEndExcluding": "5.10.261"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.0",
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"versionEndExcluding": "5.15.212"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.0",
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"versionEndExcluding": "6.1.178"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.0",
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"versionEndExcluding": "6.6.145"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.0",
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"versionEndExcluding": "6.12.97"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.0",
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"versionEndExcluding": "6.18.40"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.0",
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"versionEndExcluding": "7.1.4"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.0",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/7fe895e0a9651518c4fc082487da770ff9c14c7f"
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},
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{
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"url": "https://git.kernel.org/stable/c/0de6ebbabfbbc9c28350283dc97d8a519d5c6dd7"
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},
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{
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"url": "https://git.kernel.org/stable/c/cb19e54ebe9baf3c3243083ade65c937339ccb7b"
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},
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{
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"url": "https://git.kernel.org/stable/c/d5631081be07f20e764d3cb5c98ac0a1004fba51"
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},
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{
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"url": "https://git.kernel.org/stable/c/c36393b0d14e1e9783888f821ffe29381b8f46dc"
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},
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{
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"url": "https://git.kernel.org/stable/c/69faa3779250df14f51d5084f938a99809546e52"
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},
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{
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"url": "https://git.kernel.org/stable/c/ba1867999dbc4085e6d8c52ac5266005b8b2bf07"
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},
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{
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"url": "https://git.kernel.org/stable/c/3137b243c93982fe3460335e12f9247739766e10"
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}
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],
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"title": "usb: gadget: f_fs: initialize reset_work at allocation time",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |