Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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Configuration 1 [-]
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No data.
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| Linux | Linux Kernel |
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| Linux | Linux Kernel |
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| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4717-1 | linux security update |
Debian DLA |
DLA-4720-1 | linux security update |
Debian DLA |
DLA-4723-1 | linux-6.1 security update |
Debian DLA |
DLA-4724-1 | linux-6.12 new package |
Ubuntu USN |
USN-8726-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8727-1 | Linux kernel (OEM) vulnerabilities |
Ubuntu USN |
USN-8728-1 | Linux kernel (GCP) vulnerabilities |
Ubuntu USN |
USN-8760-1 | Linux kernel (NVIDIA) vulnerabilities |
Ubuntu USN |
USN-8726-2 | Linux kernel (Raspberry Pi) vulnerabilities |
Ubuntu USN |
USN-8726-3 | Linux kernel (IBM) vulnerabilities |
Ubuntu USN |
USN-8800-1 | Linux kernel (NVIDIA BaseOS) vulnerabilities |
Ubuntu USN |
USN-8760-2 | Linux kernel (NVIDIA) vulnerabilities |
Ubuntu USN |
USN-8726-4 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8728-2 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-8728-3 | Linux kernel (Oracle) vulnerabilities |
Ubuntu USN |
USN-8876-1 | Linux kernel (Azure CVM) vulnerabilities |
Ubuntu USN |
USN-8875-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8877-1 | Linux kernel (GCP) vulnerabilities |
Ubuntu USN |
USN-8878-1 | Linux kernel (GCP) vulnerabilities |
Ubuntu USN |
USN-8879-1 | Linux kernel (Oracle) vulnerabilities |
Ubuntu USN |
USN-8875-2 | Linux kernel (NVIDIA) vulnerabilities |
Ubuntu USN |
USN-8917-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8918-1 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-9024-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-9025-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-9026-1 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-9029-1 | Linux kernel (Raspberry Pi) vulnerabilities |
Ubuntu USN |
USN-9040-1 | Linux kernel (Low Latency NVIDIA) vulnerabilities |
Ubuntu USN |
USN-9066-1 | Linux kernel (HWE) vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.169% probability within 30 days)
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-787 |
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| Weaknesses | CWE-787 |
| Type | Values Removed | Values Added |
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| References |
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| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
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| Metrics |
cvssV3_1
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| Type | Values Removed | Values Added |
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| Weaknesses | CWE-125 CWE-787 |
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| Description | In the Linux kernel, the following vulnerability has been resolved: Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count rmi_f3a_initialize() takes the GPIO count from the device query register (f3a->gpio_count = buf & RMI_F3A_GPIO_COUNT, range 0..127). rmi_f3a_map_gpios() then allocates gpio_key_map with min(gpio_count, TRACKSTICK_RANGE_END) == at most 6 entries, but rmi_f3a_attention() iterates the full gpio_count and dereferences gpio_key_map[i], and input->keycodemax is set to the full gpio_count while input->keycode points at the 6-entry allocation. A device that reports gpio_count > 6 therefore causes an out-of-bounds read of gpio_key_map[] on every attention interrupt, and out-of-bounds accesses through the input core's default keymap ioctls: EVIOCGKEYCODE reads past the buffer (leaking adjacent slab memory to user space) and EVIOCSKEYCODE writes a caller-controlled value past it, for any process able to open the evdev node, since input_default_getkeycode() and input_default_setkeycode() only bound the index against keycodemax. Size the keymap for the full gpio_count. The mapping loop is unchanged: it still assigns only the first min(gpio_count, TRACKSTICK_RANGE_END) entries; the remaining slots stay KEY_RESERVED (devm_kcalloc zero-fills) and are skipped when reporting. | |
| Title | Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count | |
| First Time appeared |
Linux
Linux linux Kernel |
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| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
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| References |
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