{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-39806", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-39806", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-09-16T13:00:09.524Z", "updatedAt": "2026-08-05T12:05:19.463Z", "importedAt": "2026-10-24T01:57:34.152Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "HID: multitouch: fix slab out-of-bounds access in mt_report_fixup()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: multitouch: fix slab out-of-bounds access in mt_report_fixup()\n\nA malicious HID device can trigger a slab out-of-bounds during\nmt_report_fixup() by passing in report descriptor smaller than\n607 bytes. mt_report_fixup() attempts to patch byte offset 607\nof the descriptor with 0x25 by first checking if byte offset\n607 is 0x15 however it lacks bounds checks to verify if the\ndescriptor is big enough before conducting this check. Fix\nthis bug by ensuring the descriptor size is at least 608\nbytes before accessing it.\n\nBelow is the KASAN splat after the out of bounds access happens:\n\n[ 13.671954] ==================================================================\n[ 13.672667] BUG: KASAN: slab-out-of-bounds in mt_report_fixup+0x103/0x110\n[ 13.673297] Read of size 1 at addr ffff888103df39df by task kworker/0:1/10\n[ 13.673297]\n[ 13.673297] CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.15.0-00005-gec5d573d83f4-dirty #3\n[ 13.673297] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/04\n[ 13.673297] Call Trace:\n[ 13.673297] \n[ 13.673297] dump_stack_lvl+0x5f/0x80\n[ 13.673297] print_report+0xd1/0x660\n[ 13.673297] kasan_report+0xe5/0x120\n[ 13.673297] __asan_report_load1_noabort+0x18/0x20\n[ 13.673297] mt_report_fixup+0x103/0x110\n[ 13.673297] hid_open_report+0x1ef/0x810\n[ 13.673297] mt_probe+0x422/0x960\n[ 13.673297] hid_device_probe+0x2e2/0x6f0\n[ 13.673297] really_probe+0x1c6/0x6b0\n[ 13.673297] __driver_probe_device+0x24f/0x310\n[ 13.673297] driver_probe_device+0x4e/0x220\n[ 13.673297] __device_attach_driver+0x169/0x320\n[ 13.673297] bus_for_each_drv+0x11d/0x1b0\n[ 13.673297] __device_attach+0x1b8/0x3e0\n[ 13.673297] device_initial_probe+0x12/0x20\n[ 13.673297] bus_probe_device+0x13d/0x180\n[ 13.673297] device_add+0xe3a/0x1670\n[ 13.673297] hid_add_device+0x31d/0xa40\n[...]", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "7d91a0b2151a9c3b61d44c85c8eba930eddd1dd0", "status": "affected", "versionType": "git", "lessThan": "4263e5851779f7d8ebfbc9cc7d2e9b0217adba8d" }, { "version": "45ec9f17ce46417fc4eccecf388c99e81fb7fcc1", "status": "affected", "versionType": "git", "lessThan": "7ab7311c43ae19c66c53ccd8c5052a9072a4e338" }, { "version": "1d5c7d0a49ec9d8786f266ac6d1d7c4960e1787b", "status": "affected", "versionType": "git", "lessThan": "d4e6e2680807671e1c73cd6a986b33659ce92f2b" }, { "version": "c8000deb68365b461b324d68c7ea89d730f0bb85", "status": "affected", "versionType": "git", "lessThan": "3055309821dd3da92888f88bad10f0324c3c89fe" }, { "version": "c8000deb68365b461b324d68c7ea89d730f0bb85", "status": "affected", "versionType": "git", "lessThan": "c13e95587583d018cfbcc277df7e02d41902ac5a" }, { "version": "c8000deb68365b461b324d68c7ea89d730f0bb85", "status": "affected", "versionType": "git", "lessThan": "0379eb8691b9c4477da0277ae0832036ca4410b4" }, { "version": "d189e24a42b8bd0ece3d28801d751bf66dba8e92", "status": "affected", "versionType": "git" }, { "version": "5.15.168", "status": "affected", "versionType": "semver", "lessThan": "5.15.191" }, { "version": "6.1.111", "status": "affected", "versionType": "semver", "lessThan": "6.1.150" }, { "version": "6.6.52", "status": "affected", "versionType": "semver", "lessThan": "6.6.104" }, { "version": "6.10.11", "status": "affected", "versionType": "semver", "lessThan": "6.11" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.11", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.11" }, { "version": "5.15.191", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.150", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.104", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.45", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.16.5", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.16.*" }, { "version": "6.17", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }