CVE-2026-64565

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64565", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.797Z", "datePublished": "2026-08-04T06:23:24.089Z", "dateUpdated": "2026-08-19T16:28:39.404Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:28:39.404Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()\n\nThe `ims_pcu_process_data()` processes incoming URB data byte by byte.\nHowever, it fails to check if the `read_pos` index exceeds\nIMS_PCU_BUF_SIZE.\n\nIf a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE,\n`read_pos` will increment indefinitely. Moreover, since `read_pos` is\nlocated immediately after `read_buf`, the attacker can overwrite\n`read_pos` itself to arbitrarily control the index.\n\nThis manipulated `read_pos` is subsequently used in\n`ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a\nheap buffer overflow.\n\nSpecifically, an attacker can overwrite the `cmd_done.wait.head` located\nat offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`.\nConsequently, when the driver calls `complete(&pcu->cmd_done)`, it\ntriggers a control flow hijack by using the manipulated pointer.\n\nFix this by adding a bounds check for `read_pos` before writing to\n`read_buf`. If the packet is too long, discard it, log a warning,\nand reset the parser state.\n\n[dtor: factor out resetting packet state, reset checksum as well]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/input/misc/ims-pcu.c"], "versions": [{"version": "628329d52474323938a03826941e166bc7c8eff4", "lessThan": "06cfff93fd40441292567b999091beab11c74504", "status": "affected", "versionType": "git"}, {"version": "628329d52474323938a03826941e166bc7c8eff4", "lessThan": "992a7173364dcf63e30012af43da3c2f279839f9", "status": "affected", "versionType": "git"}, {"version": "628329d52474323938a03826941e166bc7c8eff4", "lessThan": "3a801bc75ba1d121d0ed60e7234f93ba5651d87d", "status": "affected", "versionType": "git"}, {"version": "628329d52474323938a03826941e166bc7c8eff4", "lessThan": "40bbbf2e91fd60715525bf0405c67876af817edf", "status": "affected", "versionType": "git"}, {"version": "628329d52474323938a03826941e166bc7c8eff4", "lessThan": "ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49", "status": "affected", "versionType": "git"}, {"version": "628329d52474323938a03826941e166bc7c8eff4", "lessThan": "d03a740e087de7dcb2a26dc1123377bd3d1d84ca", "status": "affected", "versionType": "git"}, {"version": "628329d52474323938a03826941e166bc7c8eff4", "lessThan": "875115b82c295277b81b6dfee7debc725f44e854", "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/input/misc/ims-pcu.c"], "versions": [{"version": "3.10", "status": "affected"}, {"version": "0", "lessThan": "3.10", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "5.10.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/06cfff93fd40441292567b999091beab11c74504"}, {"url": "https://git.kernel.org/stable/c/992a7173364dcf63e30012af43da3c2f279839f9"}, {"url": "https://git.kernel.org/stable/c/3a801bc75ba1d121d0ed60e7234f93ba5651d87d"}, {"url": "https://git.kernel.org/stable/c/40bbbf2e91fd60715525bf0405c67876af817edf"}, {"url": "https://git.kernel.org/stable/c/ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49"}, {"url": "https://git.kernel.org/stable/c/d03a740e087de7dcb2a26dc1123377bd3d1d84ca"}, {"url": "https://git.kernel.org/stable/c/875115b82c295277b81b6dfee7debc725f44e854"}], "title": "Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/input/misc/ims-pcu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "06cfff93fd40441292567b999091beab11c74504", "status": "affected", "version": "628329d52474323938a03826941e166bc7c8eff4", "versionType": "git"}, {"lessThan": "992a7173364dcf63e30012af43da3c2f279839f9", "status": "affected", "version": "628329d52474323938a03826941e166bc7c8eff4", "versionType": "git"}, {"lessThan": "3a801bc75ba1d121d0ed60e7234f93ba5651d87d", "status": "affected", "version": "628329d52474323938a03826941e166bc7c8eff4", "versionType": "git"}, {"lessThan": "40bbbf2e91fd60715525bf0405c67876af817edf", "status": "affected", "version": "628329d52474323938a03826941e166bc7c8eff4", "versionType": "git"}, {"lessThan": "ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49", "status": "affected", "version": "628329d52474323938a03826941e166bc7c8eff4", "versionType": "git"}, {"lessThan": "d03a740e087de7dcb2a26dc1123377bd3d1d84ca", "status": "affected", "version": "628329d52474323938a03826941e166bc7c8eff4", "versionType": "git"}, {"lessThan": "875115b82c295277b81b6dfee7debc725f44e854", "status": "affected", "version": "628329d52474323938a03826941e166bc7c8eff4", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/input/misc/ims-pcu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.10"}, {"lessThan": "3.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "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": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()\n\nThe `ims_pcu_process_data()` processes incoming URB data byte by byte.\nHowever, it fails to check if the `read_pos` index exceeds\nIMS_PCU_BUF_SIZE.\n\nIf a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE,\n`read_pos` will increment indefinitely. Moreover, since `read_pos` is\nlocated immediately after `read_buf`, the attacker can overwrite\n`read_pos` itself to arbitrarily control the index.\n\nThis manipulated `read_pos` is subsequently used in\n`ims_pcu_handle_response()` to copy data into `cmd_buf`, leading to a\nheap buffer overflow.\n\nSpecifically, an attacker can overwrite the `cmd_done.wait.head` located\nat offset 136 relative to `cmd_buf` in the `ims_pcu_handle_response()`.\nConsequently, when the driver calls `complete(&pcu->cmd_done)`, it\ntriggers a control flow hijack by using the manipulated pointer.\n\nFix this by adding a bounds check for `read_pos` before writing to\n`read_buf`. If the packet is too long, discard it, log a warning,\nand reset the parser state.\n\n[dtor: factor out resetting packet state, reset checksum as well]"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nEntrada: ims-pcu - soluciona desbordamiento de b\u00fafer de pila en ims_pcu_process_data()\n\nLa \u2019ims_pcu_process_data()\u2019 procesa los datos URB entrantes byte a byte.\nSin embargo, no verifica si el \u00edndice \u2019read_pos\u2019 excede \u2019IMS_PCU_BUF_SIZE\u2019.\n\nSi un dispositivo USB malicioso env\u00eda un paquete m\u00e1s grande que \u2019IMS_PCU_BUF_SIZE\u2019, \u2019read_pos\u2019 se incrementar\u00e1 indefinidamente. Adem\u00e1s, dado que \u2019read_pos\u2019 se encuentra inmediatamente despu\u00e9s de \u2019read_buf\u2019, el atacante puede sobrescribir el propio \u2019read_pos\u2019 para controlar arbitrariamente el \u00edndice.\n\nEste \u2019read_pos\u2019 manipulado se utiliza posteriormente en \u2019ims_pcu_handle_response()\u2019 para copiar datos en \u2019cmd_buf\u2019, lo que lleva a un desbordamiento de b\u00fafer de pila.\n\nEspec\u00edficamente, un atacante puede sobrescribir el \u2019cmd_done.wait.head\u2019 ubicado en el desplazamiento 136 con respecto a \u2019cmd_buf\u2019 en \u2019ims_pcu_handle_response()\u2019. En consecuencia, cuando el controlador llama a \u2019complete(&pcu -> cmd_done)\u2019, desencadena un secuestro de flujo de control mediante el uso del puntero manipulado.\n\nSolucione esto a\u00f1adiendo una comprobaci\u00f3n de l\u00edmites para \u2019read_pos\u2019 antes de escribir en \u2019read_buf\u2019. Si el paquete es demasiado largo, des\u00e9chelo, registre una advertencia y reinicie el estado del analizador.\n\n[dtor: refactorizar el restablecimiento del estado del paquete, restablecer la suma de verificaci\u00f3n tambi\u00e9n]"}], "id": "CVE-2026-64565", "lastModified": "2026-11-03T18:15:39.353", "metrics": {}, "published": "2026-08-04T07:16:31.477", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/06cfff93fd40441292567b999091beab11c74504"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3a801bc75ba1d121d0ed60e7234f93ba5651d87d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/40bbbf2e91fd60715525bf0405c67876af817edf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/875115b82c295277b81b6dfee7debc725f44e854"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/992a7173364dcf63e30012af43da3c2f279839f9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d03a740e087de7dcb2a26dc1123377bd3d1d84ca"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[628329d52474323938a03826941e166bc7c8eff4,40bbbf2e91fd60715525bf0405c67876af817edf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[628329d52474323938a03826941e166bc7c8eff4,ca9f8c09845fb8c51b6d447f6428eecd1b8b0a49)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[628329d52474323938a03826941e166bc7c8eff4,d03a740e087de7dcb2a26dc1123377bd3d1d84ca)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[628329d52474323938a03826941e166bc7c8eff4,875115b82c295277b81b6dfee7debc725f44e854)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "3.10.0"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0.0.0,3.10.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-04T09:00:06.350858+00:00", "updated": "2026-08-04T20:15:12.823052+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-122"]}