{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-43111", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.986Z", "datePublished": "2026-05-06T07:40:37.916Z", "dateUpdated": "2026-08-05T12:25:58.562Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:25:58.562Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: roccat: fix use-after-free in roccat_report_event\n\nroccat_report_event() iterates over the device->readers list without\nholding the readers_lock. This allows a concurrent roccat_release() to\nremove and free a reader while it's still being accessed, leading to a\nuse-after-free.\n\nProtect the readers list traversal with the readers_lock mutex." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - Roccat-specific sysfs/HID event paths feed roccat_report_event(), and exploitation of the vulnerable reader-list race requires local control of /dev/roccat* open/release activity on a system with an affected Roccat USB HID device. There is no network or adjacent protocol path.\nAC:L - The bug is a missing readers_lock around list traversal, and an attacker with device-node access can repeatedly open/close readers while generating reports through the Roccat device/sysfs path. The race is attacker-influenced rather than dependent on rare external conditions.\nPR:L - The relevant roccat char-device operations do not perform capability checks, but the attacker needs local DAC/udev access to the Roccat device/sysfs nodes. In a reasonable desktop or workstation deployment this is low-privileged user access, not real init-namespace root.\nUI:N - Once the affected device and driver are present, exploitation does not require a victim to perform an action. The attacker can drive the racing file operations and report generation directly.\nS:U - The vulnerability corrupts kernel memory within the same kernel security authority. It does not cross a VM, IOMMU, or other separate security scope boundary.\nC:H - This is a kernel use-after-free of struct roccat_reader during list traversal, allowing freed heap memory to be dereferenced after attacker-influenced reallocation. Following the required conservative UAF guidance, this can support high confidentiality impact.\nI:H - The stale reader object is not only read but can have cbuf_start updated and its list pointers traversed after free, giving a plausible kernel heap corruption primitive. Following the required conservative UAF guidance, this supports high integrity impact.\nA:H - Even without full exploitation, dereferencing or walking a freed list element can produce a kernel oops, panic, or hang. Repeated triggering can therefore cause high availability impact." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/hid/hid-roccat.c" ], "versions": [ { "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378", "lessThan": "20dca865460f7943cf70afca274b60dac371f546", "status": "affected", "versionType": "git" }, { "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378", "lessThan": "441689e3103694caa3e2d62b7d57c7bccefa5e37", "status": "affected", "versionType": "git" }, { "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378", "lessThan": "181ea51ab0f6370842c5b49cfb86824253a1189e", "status": "affected", "versionType": "git" }, { "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378", "lessThan": "e6a445513fbc6a0329d2d5ff375b6725750ec5a6", "status": "affected", "versionType": "git" }, { "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378", "lessThan": "e16a6d11bd77b81632165f02cf0d5946df74b3b7", "status": "affected", "versionType": "git" }, { "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378", "lessThan": "36bb2d0b915014bbdc5044982b31b57b78045b93", "status": "affected", "versionType": "git" }, { "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378", "lessThan": "bca0b595e15450dd66b1153c76c4ef1087ee011b", "status": "affected", "versionType": "git" }, { "version": "206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378", "lessThan": "d802d848308b35220f21a8025352f0c0aba15c12", "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-roccat.c" ], "versions": [ { "version": "2.6.35", "status": "affected" }, { "version": "0", "lessThan": "2.6.35", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.136", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.83", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.24", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19.14", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0", "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": "2.6.35", "versionEndExcluding": "5.10.258" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "5.15.209" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.1.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.6.136" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.12.83" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.18.24" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.19.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "7.0" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/20dca865460f7943cf70afca274b60dac371f546" }, { "url": "https://git.kernel.org/stable/c/441689e3103694caa3e2d62b7d57c7bccefa5e37" }, { "url": "https://git.kernel.org/stable/c/181ea51ab0f6370842c5b49cfb86824253a1189e" }, { "url": "https://git.kernel.org/stable/c/e6a445513fbc6a0329d2d5ff375b6725750ec5a6" }, { "url": "https://git.kernel.org/stable/c/e16a6d11bd77b81632165f02cf0d5946df74b3b7" }, { "url": "https://git.kernel.org/stable/c/36bb2d0b915014bbdc5044982b31b57b78045b93" }, { "url": "https://git.kernel.org/stable/c/bca0b595e15450dd66b1153c76c4ef1087ee011b" }, { "url": "https://git.kernel.org/stable/c/d802d848308b35220f21a8025352f0c0aba15c12" } ], "title": "HID: roccat: fix use-after-free in roccat_report_event", "x_generator": { "engine": "bippy-1.2.0" } } } }