CVE-2026-80783 - Vulnerability Details

Vendors	Products
Linux	Linux Kernel

Link	Providers
https://git.kernel.org/stable/c/26c45abed62536aabf4033fb6d64cf72e93374e9
https://git.kernel.org/stable/c/70589b0c005db003f6d8ae4db3c4d54fed7b83e4
https://git.kernel.org/stable/c/8a10a624996f16628234306b46f0cf36707d78bd
https://git.kernel.org/stable/c/a33a596d3ad8dfe6c96a368097a028abeee16c17
https://git.kernel.org/stable/c/bec338b07beb883726b32192c8f01c601bc76fda
https://git.kernel.org/stable/c/d095de37f78c5f32a4252ef0f99b84ba76550b86
https://git.kernel.org/stable/c/d16df755b4493b6d37803c628b2c621d096796a8
https://git.kernel.org/stable/c/db8d634128d2ba88d79c0b601e983ebe14bb0519

Type	Values Removed	Values Added
Weaknesses		CWE-674

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event() magicmouse_raw_event() handles DOUBLE_REPORT_ID (0xf7) packets, which pack two touch reports into one, by splitting the packet and calling itself on each half. The only guard against runaway recursion is a "size < 1" check, which stops zero-sized calls but does not bound the recursion depth. A malicious HID device that matches this driver can send a report starting with DOUBLE_REPORT_ID and filled with the sequence [0xf7, 0x00]. Each level consumes two bytes and recurses on the remainder, so an incoming report of up to HID_MAX_BUFFER_SIZE (16 KiB) drives roughly 8000 nested calls. That easily exhausts the 16 KiB kernel stack, leading to a stack overflow: a panic with CONFIG_VMAP_STACK, or memory corruption without it. A double report only ever wraps two normal reports; it is never legitimately nested. Refuse to re-enter the DOUBLE_REPORT_ID case from a recursive call so the recursion depth is bounded to two, while all valid packets keep being parsed exactly as before.
Title		HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event()
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/26c45abed62536aabf4033fb6d64cf72e93374e9 https://git.kernel.org/stable/c/70589b0c005db003f6d8ae4db3c4d54fed7b83e4 https://git.kernel.org/stable/c/8a10a624996f16628234306b46f0cf36707d78bd https://git.kernel.org/stable/c/a33a596d3ad8dfe6c96a368097a028abeee16c17 https://git.kernel.org/stable/c/bec338b07beb883726b32192c8f01c601bc76fda https://git.kernel.org/stable/c/d095de37f78c5f32a4252ef0f99b84ba76550b86 https://git.kernel.org/stable/c/d16df755b4493b6d37803c628b2c621d096796a8 https://git.kernel.org/stable/c/db8d634128d2ba88d79c0b601e983ebe14bb0519

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80783", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.792Z", "datePublished": "2026-09-04T15:12:54.859Z", "dateUpdated": "2026-09-04T15:12:54.859Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-04T15:12:54.859Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: magicmouse: prevent unbounded recursion in magicmouse_raw_event()\n\nmagicmouse_raw_event() handles DOUBLE_REPORT_ID (0xf7) packets, which pack\ntwo touch reports into one, by splitting the packet and calling itself on\neach half. The only guard against runaway recursion is a \"size < 1\" check,\nwhich stops zero-sized calls but does not bound the recursion depth.\n\nA malicious HID device that matches this driver can send a report starting\nwith DOUBLE_REPORT_ID and filled with the sequence [0xf7, 0x00]. Each level\nconsumes two bytes and recurses on the remainder, so an incoming report of\nup to HID_MAX_BUFFER_SIZE (16 KiB) drives roughly 8000 nested calls. That\neasily exhausts the 16 KiB kernel stack, leading to a stack overflow: a\npanic with CONFIG_VMAP_STACK, or memory corruption without it.\n\nA double report only ever wraps two normal reports; it is never\nlegitimately nested. Refuse to re-enter the DOUBLE_REPORT_ID case from a\nrecursive call so the recursion depth is bounded to two, while all valid\npackets keep being parsed exactly as before."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hid/hid-magicmouse.c"], "versions": [{"version": "a462230e16acc8664145216da3c928d03556691a", "lessThan": "26c45abed62536aabf4033fb6d64cf72e93374e9", "status": "affected", "versionType": "git"}, {"version": "a462230e16acc8664145216da3c928d03556691a", "lessThan": "8a10a624996f16628234306b46f0cf36707d78bd", "status": "affected", "versionType": "git"}, {"version": "a462230e16acc8664145216da3c928d03556691a", "lessThan": "d16df755b4493b6d37803c628b2c621d096796a8", "status": "affected", "versionType": "git"}, {"version": "a462230e16acc8664145216da3c928d03556691a", "lessThan": "bec338b07beb883726b32192c8f01c601bc76fda", "status": "affected", "versionType": "git"}, {"version": "a462230e16acc8664145216da3c928d03556691a", "lessThan": "70589b0c005db003f6d8ae4db3c4d54fed7b83e4", "status": "affected", "versionType": "git"}, {"version": "a462230e16acc8664145216da3c928d03556691a", "lessThan": "a33a596d3ad8dfe6c96a368097a028abeee16c17", "status": "affected", "versionType": "git"}, {"version": "a462230e16acc8664145216da3c928d03556691a", "lessThan": "d095de37f78c5f32a4252ef0f99b84ba76550b86", "status": "affected", "versionType": "git"}, {"version": "a462230e16acc8664145216da3c928d03556691a", "lessThan": "db8d634128d2ba88d79c0b601e983ebe14bb0519", "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/hid/hid-magicmouse.c"], "versions": [{"version": "2.6.37", "status": "affected"}, {"version": "0", "lessThan": "2.6.37", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.220", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.187", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.156", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.108", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.49", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.11", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.1", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "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": "2.6.37", "versionEndExcluding": "5.15.220"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.1.187"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.6.156"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.12.108"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "6.18.49"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "7.1.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "7.2.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.37", "versionEndExcluding": "7.3-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/26c45abed62536aabf4033fb6d64cf72e93374e9"}, {"url": "https://git.kernel.org/stable/c/8a10a624996f16628234306b46f0cf36707d78bd"}, {"url": "https://git.kernel.org/stable/c/d16df755b4493b6d37803c628b2c621d096796a8"}, {"url": "https://git.kernel.org/stable/c/bec338b07beb883726b32192c8f01c601bc76fda"}, {"url": "https://git.kernel.org/stable/c/70589b0c005db003f6d8ae4db3c4d54fed7b83e4"}, {"url": "https://git.kernel.org/stable/c/a33a596d3ad8dfe6c96a368097a028abeee16c17"}, {"url": "https://git.kernel.org/stable/c/d095de37f78c5f32a4252ef0f99b84ba76550b86"}, {"url": "https://git.kernel.org/stable/c/db8d634128d2ba88d79c0b601e983ebe14bb0519"}], "title": "HID: magicmouse: prevent unbounded recursion in magicmouse_raw_event()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/hid/hid-magicmouse.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "26c45abed62536aabf4033fb6d64cf72e93374e9", "status": "affected", "version": "a462230e16acc8664145216da3c928d03556691a", "versionType": "git"}, {"lessThan": "8a10a624996f16628234306b46f0cf36707d78bd", "status": "affected", "version": "a462230e16acc8664145216da3c928d03556691a", "versionType": "git"}, {"lessThan": "d16df755b4493b6d37803c628b2c621d096796a8", "status": "affected", "version": "a462230e16acc8664145216da3c928d03556691a", "versionType": "git"}, {"lessThan": "bec338b07beb883726b32192c8f01c601bc76fda", "status": "affected", "version": "a462230e16acc8664145216da3c928d03556691a", "versionType": "git"}, {"lessThan": "70589b0c005db003f6d8ae4db3c4d54fed7b83e4", "status": "affected", "version": "a462230e16acc8664145216da3c928d03556691a", "versionType": "git"}, {"lessThan": "a33a596d3ad8dfe6c96a368097a028abeee16c17", "status": "affected", "version": "a462230e16acc8664145216da3c928d03556691a", "versionType": "git"}, {"lessThan": "d095de37f78c5f32a4252ef0f99b84ba76550b86", "status": "affected", "version": "a462230e16acc8664145216da3c928d03556691a", "versionType": "git"}, {"lessThan": "db8d634128d2ba88d79c0b601e983ebe14bb0519", "status": "affected", "version": "a462230e16acc8664145216da3c928d03556691a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/hid/hid-magicmouse.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.37"}, {"lessThan": "2.6.37", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.220", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.187", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.156", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.108", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.49", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.11", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.1", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: magicmouse: prevent unbounded recursion in magicmouse_raw_event()\n\nmagicmouse_raw_event() handles DOUBLE_REPORT_ID (0xf7) packets, which pack\ntwo touch reports into one, by splitting the packet and calling itself on\neach half. The only guard against runaway recursion is a \"size < 1\" check,\nwhich stops zero-sized calls but does not bound the recursion depth.\n\nA malicious HID device that matches this driver can send a report starting\nwith DOUBLE_REPORT_ID and filled with the sequence [0xf7, 0x00]. Each level\nconsumes two bytes and recurses on the remainder, so an incoming report of\nup to HID_MAX_BUFFER_SIZE (16 KiB) drives roughly 8000 nested calls. That\neasily exhausts the 16 KiB kernel stack, leading to a stack overflow: a\npanic with CONFIG_VMAP_STACK, or memory corruption without it.\n\nA double report only ever wraps two normal reports; it is never\nlegitimately nested. Refuse to re-enter the DOUBLE_REPORT_ID case from a\nrecursive call so the recursion depth is bounded to two, while all valid\npackets keep being parsed exactly as before."}], "id": "CVE-2026-80783", "lastModified": "2026-09-04T16:18:04.183", "metrics": {}, "published": "2026-09-04T16:18:04.183", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/26c45abed62536aabf4033fb6d64cf72e93374e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/70589b0c005db003f6d8ae4db3c4d54fed7b83e4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8a10a624996f16628234306b46f0cf36707d78bd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a33a596d3ad8dfe6c96a368097a028abeee16c17"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bec338b07beb883726b32192c8f01c601bc76fda"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d095de37f78c5f32a4252ef0f99b84ba76550b86"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d16df755b4493b6d37803c628b2c621d096796a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/db8d634128d2ba88d79c0b601e983ebe14bb0519"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

Metrics

Affected Vendors & Products

Metrics

Affected Vendors & Products

JSON object

JSON object

JSON object

JSON object