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        {
          "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-\u003egpioled_count (device query\nregister, range 0..31) and dereferences gpioled_key_map[i], and\ninput-\u003ekeycodemax is set to the full gpioled_count while input-\u003ekeycode\npoints at the 6-entry allocation.\n\nA device that reports gpioled_count \u003e 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."
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            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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              "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\u0027s 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."
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      "title": "Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count",
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    "dateReserved": "2026-07-19T15:36:31.776Z",
    "dateUpdated": "2026-08-05T12:40:27.879Z",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: synaptics-rmi4 - bound the F3A keymap to the GPIO count\n\nrmi_f3a_initialize() takes the GPIO count from the device query register\n(f3a-\u003egpio_count = buf \u0026 RMI_F3A_GPIO_COUNT, range 0..127).\nrmi_f3a_map_gpios() then allocates gpio_key_map with\nmin(gpio_count, TRACKSTICK_RANGE_END) == at most 6 entries, but\nrmi_f3a_attention() iterates the full gpio_count and dereferences\ngpio_key_map[i], and input-\u003ekeycodemax is set to the full gpio_count\nwhile input-\u003ekeycode points at the 6-entry allocation.\n\nA device that reports gpio_count \u003e 6 therefore causes an out-of-bounds\nread of gpio_key_map[] on every attention interrupt, and out-of-bounds\naccesses through the input core\u0027s default keymap ioctls: EVIOCGKEYCODE\nreads past the buffer (leaking adjacent slab memory to user space) and\nEVIOCSKEYCODE writes a caller-controlled value past it, for any process\nable to open the evdev node, since input_default_getkeycode() and\ninput_default_setkeycode() only bound the index against keycodemax.\n\nSize the keymap for the full gpio_count. The mapping loop is unchanged:\nit still assigns only the first min(gpio_count, TRACKSTICK_RANGE_END)\nentries; the remaining slots stay KEY_RESERVED (devm_kcalloc zero-fills)\nand are skipped when reporting."
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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            {
              "lang": "en",
              "value": "AV:L - The highest-severity defensible path is local: a process that can open the affected RMI touchpad\u0027s evdev node can invoke the vulnerable keymap ioctls. A malicious USB RMI device is also a physical trigger, but the local ioctl path is more severe.\nAC:L - On a vulnerable device reporting more than six GPIOs, selecting any keymap index from 6 through gpio_count-1 deterministically accesses beyond the allocation. No race or condition outside the attacker\u0027s control is required.\nPR:L - The evdev keymap ioctl path has no capability or authentication check; only ordinary device-node access controls apply. An unprivileged user with seat, ACL, or input-device access can exploit it without administrative capabilities.\nUI:N - The attacker directly issues EVIOCGKEYCODE or EVIOCSKEYCODE after opening the node. No action by another user is required.\nS:U - Exploitation compromises the host kernel within the same security authority. It does not inherently cross a VM, IOMMU, or other separate security boundary.\nC:H - EVIOCGKEYCODE can disclose successive 16-bit words across as much as 242 bytes beyond the six-entry keymap, exposing adjacent slab contents and potentially kernel pointers. The accompanying corruption can also support stronger disclosure primitives.\nI:H - EVIOCSKEYCODE provides indexed, caller-controlled 16-bit writes throughout the out-of-bounds range. This heap corruption can overwrite adjacent pointers or control data and plausibly enable kernel code execution.\nA:H - The controlled heap overwrite can corrupt adjacent slab objects and cause a kernel oops or panic, while device attention interrupts repeatedly exercise the out-of-bounds read. The failure can be triggered repeatedly without victim interaction."
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/intel/qat/qat_common/qat_asym_algs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.8"
            },
            {
              "lessThan": "4.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.96",
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            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "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": "5.10.261",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.212",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.96",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.39",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.4",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2-rc1",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qat - validate RSA CRT component lengths\n\nThe generic RSA key parser (rsa_helper.c) bounds each CRT component (p,\nq, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt()\nallocates half-size DMA buffers (key_sz / 2) and right-aligns each\ncomponent with:\n\n    memcpy(dst + half_key_sz - len, src, len)\n\nWhen a CRT component is larger than half_key_sz the subtraction\nunderflows and memcpy writes past the DMA buffer, causing memory\ncorruption.\n\nAdd a len \u003e half_key_sz check next to the existing !len check for each\nof the five CRT components so the driver falls back to the non-CRT path\ninstead of writing out of bounds."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - An unprivileged local process can add a crafted PKCS#8 RSA private key to its own keyring and invoke KEYCTL_PKEY_QUERY, which selects qat-rsa and reaches the vulnerable key setup path.\nAC:L - With an active QAT asymmetric service and PKCS#8 parser, an oversized CRT integer deterministically causes unsigned offset underflow and an out-of-bounds memcpy. No race or attacker-uncontrollable condition is required.\nPR:L - An ordinary user can create, search, and use keys in a personal process, thread, or session keyring. No capability, administrator privilege, or user namespace is required.\nUI:N - The attacker directly performs the add_key and keyctl system calls without any victim action.\nS:U - The vulnerable QAT driver and the corrupted kernel resources share the same security authority. Ordinary kernel privilege escalation does not cross a CVSS scope boundary.\nC:H - The controlled kernel-memory overwrite can corrupt page tables, credentials, or control-flow objects and plausibly yield code execution with access to protected kernel memory.\nI:H - Attacker-controlled CRT bytes are written outside the coherent DMA allocation, potentially through multiple CRT components. This can provide powerful kernel-memory corruption and control-flow hijacking primitives.\nA:H - The invalid destination can cause an immediate kernel fault or corrupt unrelated kernel memory and subsequently panic or hang the system. The attack is repeatable."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:40:48.333Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6d99c5fadd2df488103f64d6475b63ba6852202b"
        },
        {
          "url": "https://git.kernel.org/stable/c/c34369473bfe92a0b46ec78d6358e30341c7f481"
        },
        {
          "url": "https://git.kernel.org/stable/c/1002719d13072a5e4be1e993aa61dffb4a604e82"
        },
        {
          "url": "https://git.kernel.org/stable/c/500319830d76911c120dc0b9605f8c16d7702844"
        },
        {
          "url": "https://git.kernel.org/stable/c/3d61a214fdcda41f1ebfabbb483404032a7b4d91"
        },
        {
          "url": "https://git.kernel.org/stable/c/6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce42224487c504aee4b7ff3a7342e7b4d7e28cc9"
        },
        {
          "url": "https://git.kernel.org/stable/c/b3ac78756588059729b9195fcc9f4b37d54057a5"
        }
      ],
      "title": "crypto: qat - validate RSA CRT component lengths",
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64304",
    "datePublished": "2026-07-25T08:49:38.873Z",
    "dateReserved": "2026-07-19T15:36:31.779Z",
    "dateUpdated": "2026-08-05T12:40:48.333Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}