CVE-2026-43111 (GCVE-0-2026-43111)
Vulnerability from cvelistv5
Published
2026-05-06 07:40
Modified
2026-10-19 19:06
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: roccat: fix use-after-free in roccat_report_event roccat_report_event() iterates over the device->readers list without holding the readers_lock. This allows a concurrent roccat_release() to remove and free a reader while it's still being accessed, leading to a use-after-free. Protect the readers list traversal with the readers_lock mutex.
References
Impacted products
Vendor Product Version
Linux Linux Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
Version: 206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378
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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\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378\", \"lessThan\": \"20dca865460f7943cf70afca274b60dac371f546\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378\", \"lessThan\": \"441689e3103694caa3e2d62b7d57c7bccefa5e37\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378\", \"lessThan\": \"181ea51ab0f6370842c5b49cfb86824253a1189e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378\", \"lessThan\": \"e6a445513fbc6a0329d2d5ff375b6725750ec5a6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378\", \"lessThan\": \"e16a6d11bd77b81632165f02cf0d5946df74b3b7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378\", \"lessThan\": \"36bb2d0b915014bbdc5044982b31b57b78045b93\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378\", \"lessThan\": \"bca0b595e15450dd66b1153c76c4ef1087ee011b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"206f5f2fcb5ff5bb0c60f9e9189937f3ca03e378\", \"lessThan\": \"d802d848308b35220f21a8025352f0c0aba15c12\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/hid/hid-roccat.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.35\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.35\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.258\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.209\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.175\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.136\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.83\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18.24\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"6.19.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.19.*\"}, {\"status\": \"unaffected\", \"version\": \"7.0\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/hid/hid-roccat.c\"], \"defaultStatus\": \"affected\"}], \"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\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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-\u003ereaders list without\\nholding the readers_lock. This allows a concurrent roccat_release() to\\nremove and free a reader while it\u0027s still being accessed, leading to a\\nuse-after-free.\\n\\nProtect the readers list traversal with the readers_lock mutex.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.258\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.209\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.175\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.136\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.83\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.24\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.19.14\", \"versionStartIncluding\": \"2.6.35\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.0\", \"versionStartIncluding\": \"2.6.35\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T12:25:58.562Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-43111\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-19T19:06:13.763Z\", \"dateReserved\": \"2026-05-01T14:12:55.986Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-05-06T07:40:37.916Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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