{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-64363", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.783Z", "datePublished": "2026-07-25T08:50:18.824Z", "dateUpdated": "2026-08-17T04:54:10.084Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:54:10.084Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: appleir: fix UAF on pending key_up_timer in remove()\n\nappleir_remove() runs hid_hw_stop() before timer_delete_sync().\nhid_hw_stop() synchronously unregisters the HID input device via\nhid_disconnect() -> hidinput_disconnect() -> input_unregister_device(),\nwhich drops the last reference and frees the underlying input_dev when\nno userspace handle holds it open.\n\nkey_up_tick() reads appleir->input_dev and calls input_report_key() /\ninput_sync() on it. The timer is armed from appleir_raw_event() with\na HZ/8 (~125 ms) timeout on every keydown and key-repeat report. If a\nkey was pressed shortly before the device is disconnected, the timer\ncan fire after hid_hw_stop() has freed input_dev but before the\nteardown drains it.\n\nA simple reorder is not sufficient. Putting the timer drain first\nstill leaves a window where a USB URB completion (raw_event) running\nduring hid_hw_stop() can call mod_timer() and re-arm the timer, which\nthen fires after hidinput_disconnect() has freed input_dev. The same\nURB-completion window also lets raw_event() reach key_up(), key_down()\nand battery_flat() directly, all of which dereference\nappleir->input_dev.\n\nIntroduce a 'removing' flag on struct appleir, gated by the existing\nspinlock. appleir_remove() sets the flag under the lock and then\nshuts down the timer with timer_shutdown_sync(), which both drains any\nin-flight callback and permanently disables further mod_timer() calls.\nappleir_raw_event() and key_up_tick() bail out early if the flag is\nset, so no path can arm or run the timer, or dereference\nappleir->input_dev, after remove() has started tearing down.\n\nThe keyrepeat and flatbattery branches of appleir_raw_event()\npreviously called into the input layer without holding the spinlock;\ntake it now so the flag check is well-defined. This incidentally\ncloses a pre-existing read-side race on appleir->current_key in the\nkeyrepeat branch.\n\nThis bug is structurally a sibling of commit 4db2af929279 (\"HID:\nappletb-kbd: fix UAF in inactivity-timer cleanup path\") and has been\npresent since the driver was introduced." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/hid-appleir.c" ], "versions": [ { "version": "9a4a5574ce427c364d81746fc7fb82d86b5f1a7e", "lessThan": "89ef67359672bf4cd6921524e39f61648fe38c0f", "status": "affected", "versionType": "git" }, { "version": "9a4a5574ce427c364d81746fc7fb82d86b5f1a7e", "lessThan": "3d30a0bb0e79621ae921b487835c56198adfafa3", "status": "affected", "versionType": "git" }, { "version": "9a4a5574ce427c364d81746fc7fb82d86b5f1a7e", "lessThan": "37a52c61d4f78153c38ae1f7491dfcc8ac828dcf", "status": "affected", "versionType": "git" }, { "version": "9a4a5574ce427c364d81746fc7fb82d86b5f1a7e", "lessThan": "05e3decc55d1deca9410e0eb36466651fcbe57a5", "status": "affected", "versionType": "git" }, { "version": "9a4a5574ce427c364d81746fc7fb82d86b5f1a7e", "lessThan": "3755f6e25776b8b12ddf062f9b573f05090e4034", "status": "affected", "versionType": "git" }, { "version": "9a4a5574ce427c364d81746fc7fb82d86b5f1a7e", "lessThan": "b363d964ca829c1761c9f04188dfa28f90b0f2d4", "status": "affected", "versionType": "git" }, { "version": "9a4a5574ce427c364d81746fc7fb82d86b5f1a7e", "lessThan": "6b0838e86da88b1d3bff86f19761ff25af73eaca", "status": "affected", "versionType": "git" }, { "version": "9a4a5574ce427c364d81746fc7fb82d86b5f1a7e", "lessThan": "75fe87e19d8aff81eb2c64d15d244ab8da4de945", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/hid-appleir.c" ], "versions": [ { "version": "3.10", "status": "affected" }, { "version": "0", "lessThan": "3.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "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": "3.10", "versionEndExcluding": "5.10.261" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.15.212" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.18.39" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.1.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/89ef67359672bf4cd6921524e39f61648fe38c0f" }, { "url": "https://git.kernel.org/stable/c/3d30a0bb0e79621ae921b487835c56198adfafa3" }, { "url": "https://git.kernel.org/stable/c/37a52c61d4f78153c38ae1f7491dfcc8ac828dcf" }, { "url": "https://git.kernel.org/stable/c/05e3decc55d1deca9410e0eb36466651fcbe57a5" }, { "url": "https://git.kernel.org/stable/c/3755f6e25776b8b12ddf062f9b573f05090e4034" }, { "url": "https://git.kernel.org/stable/c/b363d964ca829c1761c9f04188dfa28f90b0f2d4" }, { "url": "https://git.kernel.org/stable/c/6b0838e86da88b1d3bff86f19761ff25af73eaca" }, { "url": "https://git.kernel.org/stable/c/75fe87e19d8aff81eb2c64d15d244ab8da4de945" } ], "title": "HID: appleir: fix UAF on pending key_up_timer in remove()", "x_generator": { "engine": "bippy-1.2.0" } } } }