{"cve":"CVE-2022-48978","nvd":{"published":"2024-10-21T20:15:09.850","modified":"2026-06-17T05:16:45.777","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: core: fix shift-out-of-bounds in hid_report_raw_event\n\nSyzbot reported shift-out-of-bounds in hid_report_raw_event.\n\nmicrosoft 0003:045E:07DA.0001: hid_field_extract() called with n (128) >\n32! (swapper/0)\n======================================================================\nUBSAN: shift-out-of-bounds in drivers/hid/hid-core.c:1323:20\nshift exponent 127 is too large for 32-bit type 'int'\nCPU: 0 PID: 0 Comm: swapper/0 Not tainted\n6.1.0-rc4-syzkaller-00159-g4bbf3422df78 #0\nHardware name: Google Compute Engine/Google Compute Engine, BIOS\nGoogle 10/26/2022\nCall Trace:\n <IRQ>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106\n ubsan_epilogue lib/ubsan.c:151 [inline]\n __ubsan_handle_shift_out_of_bounds+0x3a6/0x420 lib/ubsan.c:322\n snto32 drivers/hid/hid-core.c:1323 [inline]\n hid_input_fetch_field drivers/hid/hid-core.c:1572 [inline]\n hid_process_report drivers/hid/hid-core.c:1665 [inline]\n hid_report_raw_event+0xd56/0x18b0 drivers/hid/hid-core.c:1998\n hid_input_report+0x408/0x4f0 drivers/hid/hid-core.c:2066\n hid_irq_in+0x459/0x690 drivers/hid/usbhid/hid-core.c:284\n __usb_hcd_giveback_urb+0x369/0x530 drivers/usb/core/hcd.c:1671\n dummy_timer+0x86b/0x3110 drivers/usb/gadget/udc/dummy_hcd.c:1988\n call_timer_fn+0xf5/0x210 kernel/time/timer.c:1474\n expire_timers kernel/time/timer.c:1519 [inline]\n __run_timers+0x76a/0x980 kernel/time/timer.c:1790\n run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803\n __do_softirq+0x277/0x75b kernel/softirq.c:571\n __irq_exit_rcu+0xec/0x170 kernel/softirq.c:650\n irq_exit_rcu+0x5/0x20 kernel/softirq.c:662\n sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1107\n======================================================================\n\nIf the size of the integer (unsigned n) is bigger than 32 in snto32(),\nshift exponent will be too large for 32-bit type 'int', resulting in a\nshift-out-of-bounds bug.\nFix this by adding a check on the size of the integer (unsigned n) in\nsnto32(). To add support for n greater than 32 bits, set n to 32, if n\nis greater than 32.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/151493fe5a6ed1a88decc929a7368a3f2a246914","https://git.kernel.org/stable/c/2b3b4d7aadaa1b6b58d0f34823bf86cfe8a31b4d","https://git.kernel.org/stable/c/809783f8b4b600c7fb3bccb10fefef822601ea3b","https://git.kernel.org/stable/c/8e14f20e12224ee2429f75a5c9418a700e26a8d3","https://git.kernel.org/stable/c/bc03f809da78fc79e4aee132d4e5c6a2b3aeec73"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:56:33.105311382+00:00"},"epss":{"cve":"CVE-2022-48978","score":0.00249,"percentile":0.16242,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}