{"api_version":"1","generated_at":"2026-08-14T04:36:08+00:00","cve":"CVE-2026-68214","urls":{"html":"https://cve.report/CVE-2026-68214","api":"https://cve.report/api/cve/CVE-2026-68214.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68214","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68214"},"summary":{"title":"media: rtl2832: fix use-after-free in rtl2832_remove()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: rtl2832: fix use-after-free in rtl2832_remove()\n\ncancel_delayed_work_sync() is called before i2c_mux_del_adapters()\nin rtl2832_remove(). While the cancel waits for any running instance\nof i2c_gate_work to finish, it does not prevent the timer from being\nrescheduled by a concurrent thread.\n\nDuring probe, the r820t_attach() call attempts I2C transfers through\nthe mux adapter. These transfers go through i2c_mux_master_xfer(),\nwhich calls rtl2832_deselect() after the transfer completes,\nrescheduling i2c_gate_work via schedule_delayed_work(). If this\ntransfer is still in flight when rtl2832_remove() runs,\nrtl2832_deselect() can reschedule i2c_gate_work after it has been\ncancelled, causing a use-after-free when kfree(dev) is called.\n\nFix this by calling i2c_mux_del_adapters() before\ncancel_delayed_work_sync(). Once the mux adapter is unregistered, no\nnew I2C transfers can go through it, so rtl2832_deselect() can no\nlonger reschedule i2c_gate_work. The subsequent\ncancel_delayed_work_sync() is then guaranteed to be final.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:20:09","updated_at":"2026-08-10 13:20:09"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/9acd5bbbe1df8e487e49488692c224496d4c9e16","name":"https://git.kernel.org/stable/c/9acd5bbbe1df8e487e49488692c224496d4c9e16","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/680daf40a82d483949f87f0d8f98639dc47e610c","name":"https://git.kernel.org/stable/c/680daf40a82d483949f87f0d8f98639dc47e610c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2c71bda6edc630a1f8c3c45d8df5fc22d234e042","name":"https://git.kernel.org/stable/c/2c71bda6edc630a1f8c3c45d8df5fc22d234e042","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/24bef237eef8dd1ebcffb129ba21891ddad0d309","name":"https://git.kernel.org/stable/c/24bef237eef8dd1ebcffb129ba21891ddad0d309","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/90d781711418881f8c836c2a859cc2886625d750","name":"https://git.kernel.org/stable/c/90d781711418881f8c836c2a859cc2886625d750","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68214","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68214","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cddcc40b1b1553010acb89add84c64b5d123ec94 9acd5bbbe1df8e487e49488692c224496d4c9e16 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cddcc40b1b1553010acb89add84c64b5d123ec94 24bef237eef8dd1ebcffb129ba21891ddad0d309 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cddcc40b1b1553010acb89add84c64b5d123ec94 2c71bda6edc630a1f8c3c45d8df5fc22d234e042 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cddcc40b1b1553010acb89add84c64b5d123ec94 90d781711418881f8c836c2a859cc2886625d750 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cddcc40b1b1553010acb89add84c64b5d123ec94 680daf40a82d483949f87f0d8f98639dc47e610c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.7","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.148 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-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/media/dvb-frontends/rtl2832.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9acd5bbbe1df8e487e49488692c224496d4c9e16","status":"affected","version":"cddcc40b1b1553010acb89add84c64b5d123ec94","versionType":"git"},{"lessThan":"24bef237eef8dd1ebcffb129ba21891ddad0d309","status":"affected","version":"cddcc40b1b1553010acb89add84c64b5d123ec94","versionType":"git"},{"lessThan":"2c71bda6edc630a1f8c3c45d8df5fc22d234e042","status":"affected","version":"cddcc40b1b1553010acb89add84c64b5d123ec94","versionType":"git"},{"lessThan":"90d781711418881f8c836c2a859cc2886625d750","status":"affected","version":"cddcc40b1b1553010acb89add84c64b5d123ec94","versionType":"git"},{"lessThan":"680daf40a82d483949f87f0d8f98639dc47e610c","status":"affected","version":"cddcc40b1b1553010acb89add84c64b5d123ec94","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/media/dvb-frontends/rtl2832.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.7"},{"lessThan":"4.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.148","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"4.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: rtl2832: fix use-after-free in rtl2832_remove()\n\ncancel_delayed_work_sync() is called before i2c_mux_del_adapters()\nin rtl2832_remove(). While the cancel waits for any running instance\nof i2c_gate_work to finish, it does not prevent the timer from being\nrescheduled by a concurrent thread.\n\nDuring probe, the r820t_attach() call attempts I2C transfers through\nthe mux adapter. These transfers go through i2c_mux_master_xfer(),\nwhich calls rtl2832_deselect() after the transfer completes,\nrescheduling i2c_gate_work via schedule_delayed_work(). If this\ntransfer is still in flight when rtl2832_remove() runs,\nrtl2832_deselect() can reschedule i2c_gate_work after it has been\ncancelled, causing a use-after-free when kfree(dev) is called.\n\nFix this by calling i2c_mux_del_adapters() before\ncancel_delayed_work_sync(). Once the mux adapter is unregistered, no\nnew I2C transfers can go through it, so rtl2832_deselect() can no\nlonger reschedule i2c_gate_work. The subsequent\ncancel_delayed_work_sync() is then guaranteed to be final."}],"providerMetadata":{"dateUpdated":"2026-08-10T12:00:33.539Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/9acd5bbbe1df8e487e49488692c224496d4c9e16"},{"url":"https://git.kernel.org/stable/c/24bef237eef8dd1ebcffb129ba21891ddad0d309"},{"url":"https://git.kernel.org/stable/c/2c71bda6edc630a1f8c3c45d8df5fc22d234e042"},{"url":"https://git.kernel.org/stable/c/90d781711418881f8c836c2a859cc2886625d750"},{"url":"https://git.kernel.org/stable/c/680daf40a82d483949f87f0d8f98639dc47e610c"}],"title":"media: rtl2832: fix use-after-free in rtl2832_remove()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68214","datePublished":"2026-08-10T12:00:33.539Z","dateReserved":"2026-07-30T09:28:09.375Z","dateUpdated":"2026-08-10T12:00:33.539Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:20:09","lastModifiedDate":"2026-08-10 13:20:09","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68214","Ordinal":"1","Title":"media: rtl2832: fix use-after-free in rtl2832_remove()","CVE":"CVE-2026-68214","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68214","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: rtl2832: fix use-after-free in rtl2832_remove()\n\ncancel_delayed_work_sync() is called before i2c_mux_del_adapters()\nin rtl2832_remove(). While the cancel waits for any running instance\nof i2c_gate_work to finish, it does not prevent the timer from being\nrescheduled by a concurrent thread.\n\nDuring probe, the r820t_attach() call attempts I2C transfers through\nthe mux adapter. These transfers go through i2c_mux_master_xfer(),\nwhich calls rtl2832_deselect() after the transfer completes,\nrescheduling i2c_gate_work via schedule_delayed_work(). If this\ntransfer is still in flight when rtl2832_remove() runs,\nrtl2832_deselect() can reschedule i2c_gate_work after it has been\ncancelled, causing a use-after-free when kfree(dev) is called.\n\nFix this by calling i2c_mux_del_adapters() before\ncancel_delayed_work_sync(). Once the mux adapter is unregistered, no\nnew I2C transfers can go through it, so rtl2832_deselect() can no\nlonger reschedule i2c_gate_work. The subsequent\ncancel_delayed_work_sync() is then guaranteed to be final.","Type":"Description","Title":"media: rtl2832: fix use-after-free in rtl2832_remove()"}]}}}