{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-64276", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.776Z", "datePublished": "2026-07-25T08:49:21.300Z", "dateUpdated": "2026-08-17T04:52:31.046Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:52:31.046Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count\n\nrmi_f30_map_gpios() allocates gpioled_key_map with\nmin(gpioled_count, TRACKSTICK_RANGE_END) == at most 6 entries, but\nrmi_f30_attention() iterates the full f30->gpioled_count (device query\nregister, range 0..31) and dereferences gpioled_key_map[i], and\ninput->keycodemax is set to the full gpioled_count while input->keycode\npoints at the 6-entry allocation.\n\nA device that reports gpioled_count > 6 with GPIO support enabled\ntherefore causes an out-of-bounds read on the attention interrupt and\nout-of-bounds read/write through the EVIOCGKEYCODE/EVIOCSKEYCODE ioctls,\nwhich bound the index only against keycodemax. This is the same defect\nas the F3A handler, which was copied from F30.\n\nSize the keymap for the full gpioled_count; the mapping loop still\nassigns only the first min(gpioled_count, TRACKSTICK_RANGE_END) entries." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - An unprivileged local process that can open the affected /dev/input/event node can reach the flawed table through EVIOCGKEYCODE or EVIOCSKEYCODE; no physical reattachment or network path is required on systems with an affected F30 device.\nAC:L - Once an F30 device reports more than six GPIO/LEDs, attacker-selected indices deterministically trigger two-byte heap out-of-bounds reads or writes. No race or condition outside the attacker's control is required.\nPR:L - The evdev ioctl path contains no capability or namespace privilege check, so any ordinary user permitted to open the event node can trigger it.\nUI:N - The attacker directly issues the ioctls, and the separate attention path is device-driven; neither requires action by another user.\nS:U - The vulnerable driver and the affected kernel memory share the same security authority. Kernel privilege escalation or code execution does not itself cross a VM, IOMMU, or other scope boundary.\nC:H - EVIOCGKEYCODE returns attacker-selected out-of-bounds u16 values and can disclose multiple adjacent slab words across the available indices. This heap disclosure can expose security-sensitive kernel data and facilitate further exploitation.\nI:H - EVIOCSKEYCODE performs attacker-controlled u16 writes beyond the allocation at selectable offsets. These writes can corrupt adjacent heap objects or metadata and plausibly enable control-flow hijacking.\nA:H - The controlled heap corruption can damage adjacent kernel objects and cause an oops or panic, while the device can also repeatedly trigger the out-of-bounds attention path." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/input/rmi4/rmi_f30.c" ], "versions": [ { "version": "3e64fcbdbd10e46dede502d507dbcc104837cd59", "lessThan": "8c6d18d61bb6fe0e6edf848413391c590552e8a9", "status": "affected", "versionType": "git" }, { "version": "3e64fcbdbd10e46dede502d507dbcc104837cd59", "lessThan": "d162a1ead7de404d8b41a093c83ed0db6487cded", "status": "affected", "versionType": "git" }, { "version": "3e64fcbdbd10e46dede502d507dbcc104837cd59", "lessThan": "f0be9eba946e9200b43265e0a748d38bd0a56954", "status": "affected", "versionType": "git" }, { "version": "3e64fcbdbd10e46dede502d507dbcc104837cd59", "lessThan": "26c895928d7118436a24f564587cb4aefc40cdd8", "status": "affected", "versionType": "git" }, { "version": "3e64fcbdbd10e46dede502d507dbcc104837cd59", "lessThan": "4e3689c26854356f41fbaa1eafa382e58ac79e00", "status": "affected", "versionType": "git" }, { "version": "3e64fcbdbd10e46dede502d507dbcc104837cd59", "lessThan": "e849c6f51e6877104c765da084e001ec37c8e119", "status": "affected", "versionType": "git" }, { "version": "3e64fcbdbd10e46dede502d507dbcc104837cd59", "lessThan": "bfe622efecd4ff0a792d0ecd1a8dce535a902f50", "status": "affected", "versionType": "git" }, { "version": "3e64fcbdbd10e46dede502d507dbcc104837cd59", "lessThan": "d577e46785d45484b2ab7e7309c49b18764bf56c", "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/rmi4/rmi_f30.c" ], "versions": [ { "version": "4.14", "status": "affected" }, { "version": "0", "lessThan": "4.14", "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": "6.12.96", "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": "4.14", "versionEndExcluding": "5.10.261" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "5.15.212" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.12.96" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "6.18.39" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "7.1.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/8c6d18d61bb6fe0e6edf848413391c590552e8a9" }, { "url": "https://git.kernel.org/stable/c/d162a1ead7de404d8b41a093c83ed0db6487cded" }, { "url": "https://git.kernel.org/stable/c/f0be9eba946e9200b43265e0a748d38bd0a56954" }, { "url": "https://git.kernel.org/stable/c/26c895928d7118436a24f564587cb4aefc40cdd8" }, { "url": "https://git.kernel.org/stable/c/4e3689c26854356f41fbaa1eafa382e58ac79e00" }, { "url": "https://git.kernel.org/stable/c/e849c6f51e6877104c765da084e001ec37c8e119" }, { "url": "https://git.kernel.org/stable/c/bfe622efecd4ff0a792d0ecd1a8dce535a902f50" }, { "url": "https://git.kernel.org/stable/c/d577e46785d45484b2ab7e7309c49b18764bf56c" } ], "title": "Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count", "x_generator": { "engine": "bippy-1.2.0" } } } }