{"id":"CVE-2026-68214","title":"media: rtl2832: fix use-after-free in rtl2832_remove()","summary":"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 f…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 1e8a6bc19403661661fed5ae82f6eca6c9cdfad2","Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 68a9c0290897c1436ddceb8cea604c93377a0299","Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 13c06056699e66ff7109ba68658cc6ea4a23f516","Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 9acd5bbbe1df8e487e49488692c224496d4c9e16","Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 24bef237eef8dd1ebcffb129ba21891ddad0d309","Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 2c71bda6edc630a1f8c3c45d8df5fc22d234e042","Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 90d781711418881f8c836c2a859cc2886625d750","Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 680daf40a82d483949f87f0d8f98639dc47e610c","Linux 4.7"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:44:42.918474Z"},"published":"2026-08-10","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:55:09.435Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68214","references":[{"url":"https://git.kernel.org/stable/c/1e8a6bc19403661661fed5ae82f6eca6c9cdfad2"},{"url":"https://git.kernel.org/stable/c/68a9c0290897c1436ddceb8cea604c93377a0299"},{"url":"https://git.kernel.org/stable/c/13c06056699e66ff7109ba68658cc6ea4a23f516"},{"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"}],"tags":["cve.org"],"epss":0.0022,"epssPercentile":0.12607,"ingestedAt":"2026-11-06T18:00:12.620Z","slug":"CVE-2026-68214","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 1e8a6bc19403661661fed5ae82f6eca6c9cdfad2`\n- `Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 68a9c0290897c1436ddceb8cea604c93377a0299`\n- `Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 13c06056699e66ff7109ba68658cc6ea4a23f516`\n- `Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 9acd5bbbe1df8e487e49488692c224496d4c9e16`\n- `Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 24bef237eef8dd1ebcffb129ba21891ddad0d309`\n- `Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 2c71bda6edc630a1f8c3c45d8df5fc22d234e042`\n- `Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 90d781711418881f8c836c2a859cc2886625d750`\n- `Linux >= cddcc40b1b1553010acb89add84c64b5d123ec94 < 680daf40a82d483949f87f0d8f98639dc47e610c`\n- `Linux 4.7`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}