{"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"}}}}