{"api_version":"1","generated_at":"2026-09-17T23:31:12+00:00","cve":"CVE-2026-93098","urls":{"html":"https://cve.report/CVE-2026-93098","api":"https://cve.report/api/cve/CVE-2026-93098.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93098","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93098"},"summary":{"title":"rpmsg: glink: fix deadlock in endpoint destroy during driver detach","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nrpmsg: glink: fix deadlock in endpoint destroy during driver detach\n\nDuring driver detach, the device core holds the device mutex throughout\nthe driver's remove callback chain.  When the rpmsg endpoint is\ndestroyed as part of that teardown, the GLINK endpoint destroy\nimplementation attempts to unregister the underlying rpmsg device.\nThat unregistration calls device_del(), which tries to re-acquire the\nsame device mutex already held higher up the stack, causing rmmod to\nhang indefinitely.\n\nThe deadlock manifests with the following call chain:\n\n[<0>] device_del+0x44/0x414  <- tries to acquire same mutex\n[<0>] device_unregister+0x18/0x34\n[<0>] rpmsg_unregister_device+0x28/0x4c\n[<0>] qcom_glink_remove_rpmsg_device+0x70/0xc0\n[<0>] qcom_glink_destroy_ept+0x58/0xbc\n[<0>] rpmsg_dev_remove+0x50/0x60\n[<0>] device_remove+0x4c/0x80\n[<0>] device_release_driver_internal+0x1cc/0x228  <- acquires device mutex\n[<0>] driver_detach+0x4c/0x98\n[<0>] bus_remove_driver+0x6c/0xbc\n[<0>] driver_unregister+0x30/0x60\n[<0>] unregister_rpmsg_driver+0x10/0x1c\n[<0>] fastrpc_exit+0x28/0x38 [fastrpc]\n[<0>] __arm64_sys_delete_module+0x1b8/0x294\n[<0>] invoke_syscall+0x48/0x10c\n[<0>] el0_svc_common.constprop.0+0xc0/0xe0\n[<0>] do_el0_svc+0x1c/0x28\n[<0>] el0_svc+0x34/0x108\n[<0>] el0t_64_sync_handler+0xa0/0xe4\n[<0>] el0t_64_sync+0x198/0x19c\n\nThe rpmsg device unregistration inside endpoint destroy is redundant.\nIn both contexts where endpoint destruction is triggered:\n\n- Driver detach path: the driver core already tears down the rpmsg\n  device.\n\n- Channel close path: the rpmsg device is already unregistered before\n  endpoint destruction is reached.\n\nRemove the redundant unregistration to fix the deadlock.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:03","updated_at":"2026-09-17 17:18:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/5a5a48e788e02fd8a8eb7188ce440572d6c12418","name":"https://git.kernel.org/stable/c/5a5a48e788e02fd8a8eb7188ce440572d6c12418","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/48f55b90f0d713e477e26b85d7327d9592d016f9","name":"https://git.kernel.org/stable/c/48f55b90f0d713e477e26b85d7327d9592d016f9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bbc236357876d35a624030e5c50eedbc380be98e","name":"https://git.kernel.org/stable/c/bbc236357876d35a624030e5c50eedbc380be98e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ecad679e2b92c419cc22cc8f257cd457d5192647","name":"https://git.kernel.org/stable/c/ecad679e2b92c419cc22cc8f257cd457d5192647","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e559626bee8a6632aafc08eedcdb4bf26ca245c5","name":"https://git.kernel.org/stable/c/e559626bee8a6632aafc08eedcdb4bf26ca245c5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/73092c2292aa65515671e54abbcda2166d3827ed","name":"https://git.kernel.org/stable/c/73092c2292aa65515671e54abbcda2166d3827ed","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cbcdf96e1c87bc07055d04264018ded1f3bafffb","name":"https://git.kernel.org/stable/c/cbcdf96e1c87bc07055d04264018ded1f3bafffb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8597f669a5268e0dcf243e2b2d6ca00370117057","name":"https://git.kernel.org/stable/c/8597f669a5268e0dcf243e2b2d6ca00370117057","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93098","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93098","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 93b6b9e4acff4794e7426d3ad64ef14e3b3e8919 73092c2292aa65515671e54abbcda2166d3827ed git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 24fd02c3a4798de7dc94b55d36a1685fe6cdaf69 bbc236357876d35a624030e5c50eedbc380be98e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 32fe8cdf541863239b81c80b8b04112d6e8792cf 8597f669a5268e0dcf243e2b2d6ca00370117057 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c6210714347f72bae8e7142dc0a7f99923c466e7 48f55b90f0d713e477e26b85d7327d9592d016f9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fcab5c2672f8dac3d77013dbe047b2441f4141f5 cbcdf96e1c87bc07055d04264018ded1f3bafffb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f80e4e91b010ee7d6c52f24d069975ac955ac6b2 ecad679e2b92c419cc22cc8f257cd457d5192647 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a53e356df548f6b0e82529ef3cc6070f42622189 e559626bee8a6632aafc08eedcdb4bf26ca245c5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a53e356df548f6b0e82529ef3cc6070f42622189 5a5a48e788e02fd8a8eb7188ce440572d6c12418 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10.248 5.10.270 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15.198 5.15.221 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1.160 6.1.188 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.6.120 6.6.157 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.64 6.12.110 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18.3 6.18.52 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.270 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.221 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/rpmsg/qcom_glink_native.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"73092c2292aa65515671e54abbcda2166d3827ed","status":"affected","version":"93b6b9e4acff4794e7426d3ad64ef14e3b3e8919","versionType":"git"},{"lessThan":"bbc236357876d35a624030e5c50eedbc380be98e","status":"affected","version":"24fd02c3a4798de7dc94b55d36a1685fe6cdaf69","versionType":"git"},{"lessThan":"8597f669a5268e0dcf243e2b2d6ca00370117057","status":"affected","version":"32fe8cdf541863239b81c80b8b04112d6e8792cf","versionType":"git"},{"lessThan":"48f55b90f0d713e477e26b85d7327d9592d016f9","status":"affected","version":"c6210714347f72bae8e7142dc0a7f99923c466e7","versionType":"git"},{"lessThan":"cbcdf96e1c87bc07055d04264018ded1f3bafffb","status":"affected","version":"fcab5c2672f8dac3d77013dbe047b2441f4141f5","versionType":"git"},{"lessThan":"ecad679e2b92c419cc22cc8f257cd457d5192647","status":"affected","version":"f80e4e91b010ee7d6c52f24d069975ac955ac6b2","versionType":"git"},{"lessThan":"e559626bee8a6632aafc08eedcdb4bf26ca245c5","status":"affected","version":"a53e356df548f6b0e82529ef3cc6070f42622189","versionType":"git"},{"lessThan":"5a5a48e788e02fd8a8eb7188ce440572d6c12418","status":"affected","version":"a53e356df548f6b0e82529ef3cc6070f42622189","versionType":"git"},{"lessThan":"5.10.270","status":"affected","version":"5.10.248","versionType":"semver"},{"lessThan":"5.15.221","status":"affected","version":"5.15.198","versionType":"semver"},{"lessThan":"6.1.188","status":"affected","version":"6.1.160","versionType":"semver"},{"lessThan":"6.6.157","status":"affected","version":"6.6.120","versionType":"semver"},{"lessThan":"6.12.110","status":"affected","version":"6.12.64","versionType":"semver"},{"lessThan":"6.18.52","status":"affected","version":"6.18.3","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/rpmsg/qcom_glink_native.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.270","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.221","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.270","versionStartIncluding":"5.10.248","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.221","versionStartIncluding":"5.15.198","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"6.1.160","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"6.6.120","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.12.64","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.18.3","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nrpmsg: glink: fix deadlock in endpoint destroy during driver detach\n\nDuring driver detach, the device core holds the device mutex throughout\nthe driver's remove callback chain.  When the rpmsg endpoint is\ndestroyed as part of that teardown, the GLINK endpoint destroy\nimplementation attempts to unregister the underlying rpmsg device.\nThat unregistration calls device_del(), which tries to re-acquire the\nsame device mutex already held higher up the stack, causing rmmod to\nhang indefinitely.\n\nThe deadlock manifests with the following call chain:\n\n[<0>] device_del+0x44/0x414  <- tries to acquire same mutex\n[<0>] device_unregister+0x18/0x34\n[<0>] rpmsg_unregister_device+0x28/0x4c\n[<0>] qcom_glink_remove_rpmsg_device+0x70/0xc0\n[<0>] qcom_glink_destroy_ept+0x58/0xbc\n[<0>] rpmsg_dev_remove+0x50/0x60\n[<0>] device_remove+0x4c/0x80\n[<0>] device_release_driver_internal+0x1cc/0x228  <- acquires device mutex\n[<0>] driver_detach+0x4c/0x98\n[<0>] bus_remove_driver+0x6c/0xbc\n[<0>] driver_unregister+0x30/0x60\n[<0>] unregister_rpmsg_driver+0x10/0x1c\n[<0>] fastrpc_exit+0x28/0x38 [fastrpc]\n[<0>] __arm64_sys_delete_module+0x1b8/0x294\n[<0>] invoke_syscall+0x48/0x10c\n[<0>] el0_svc_common.constprop.0+0xc0/0xe0\n[<0>] do_el0_svc+0x1c/0x28\n[<0>] el0_svc+0x34/0x108\n[<0>] el0t_64_sync_handler+0xa0/0xe4\n[<0>] el0t_64_sync+0x198/0x19c\n\nThe rpmsg device unregistration inside endpoint destroy is redundant.\nIn both contexts where endpoint destruction is triggered:\n\n- Driver detach path: the driver core already tears down the rpmsg\n  device.\n\n- Channel close path: the rpmsg device is already unregistered before\n  endpoint destruction is reached.\n\nRemove the redundant unregistration to fix the deadlock."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:11:11.703Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/73092c2292aa65515671e54abbcda2166d3827ed"},{"url":"https://git.kernel.org/stable/c/bbc236357876d35a624030e5c50eedbc380be98e"},{"url":"https://git.kernel.org/stable/c/8597f669a5268e0dcf243e2b2d6ca00370117057"},{"url":"https://git.kernel.org/stable/c/48f55b90f0d713e477e26b85d7327d9592d016f9"},{"url":"https://git.kernel.org/stable/c/cbcdf96e1c87bc07055d04264018ded1f3bafffb"},{"url":"https://git.kernel.org/stable/c/ecad679e2b92c419cc22cc8f257cd457d5192647"},{"url":"https://git.kernel.org/stable/c/e559626bee8a6632aafc08eedcdb4bf26ca245c5"},{"url":"https://git.kernel.org/stable/c/5a5a48e788e02fd8a8eb7188ce440572d6c12418"}],"title":"rpmsg: glink: fix deadlock in endpoint destroy during driver detach","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93098","datePublished":"2026-09-17T16:11:11.703Z","dateReserved":"2026-09-17T16:02:15.084Z","dateUpdated":"2026-09-17T16:11:11.703Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:03","lastModifiedDate":"2026-09-17 17:18:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93098","Ordinal":"1","Title":"rpmsg: glink: fix deadlock in endpoint destroy during driver det","CVE":"CVE-2026-93098","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93098","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nrpmsg: glink: fix deadlock in endpoint destroy during driver detach\n\nDuring driver detach, the device core holds the device mutex throughout\nthe driver's remove callback chain.  When the rpmsg endpoint is\ndestroyed as part of that teardown, the GLINK endpoint destroy\nimplementation attempts to unregister the underlying rpmsg device.\nThat unregistration calls device_del(), which tries to re-acquire the\nsame device mutex already held higher up the stack, causing rmmod to\nhang indefinitely.\n\nThe deadlock manifests with the following call chain:\n\n[<0>] device_del+0x44/0x414  <- tries to acquire same mutex\n[<0>] device_unregister+0x18/0x34\n[<0>] rpmsg_unregister_device+0x28/0x4c\n[<0>] qcom_glink_remove_rpmsg_device+0x70/0xc0\n[<0>] qcom_glink_destroy_ept+0x58/0xbc\n[<0>] rpmsg_dev_remove+0x50/0x60\n[<0>] device_remove+0x4c/0x80\n[<0>] device_release_driver_internal+0x1cc/0x228  <- acquires device mutex\n[<0>] driver_detach+0x4c/0x98\n[<0>] bus_remove_driver+0x6c/0xbc\n[<0>] driver_unregister+0x30/0x60\n[<0>] unregister_rpmsg_driver+0x10/0x1c\n[<0>] fastrpc_exit+0x28/0x38 [fastrpc]\n[<0>] __arm64_sys_delete_module+0x1b8/0x294\n[<0>] invoke_syscall+0x48/0x10c\n[<0>] el0_svc_common.constprop.0+0xc0/0xe0\n[<0>] do_el0_svc+0x1c/0x28\n[<0>] el0_svc+0x34/0x108\n[<0>] el0t_64_sync_handler+0xa0/0xe4\n[<0>] el0t_64_sync+0x198/0x19c\n\nThe rpmsg device unregistration inside endpoint destroy is redundant.\nIn both contexts where endpoint destruction is triggered:\n\n- Driver detach path: the driver core already tears down the rpmsg\n  device.\n\n- Channel close path: the rpmsg device is already unregistered before\n  endpoint destruction is reached.\n\nRemove the redundant unregistration to fix the deadlock.","Type":"Description","Title":"rpmsg: glink: fix deadlock in endpoint destroy during driver det"}]}}}