{"id":"CVE-2021-47240","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: fix OOB Read in qrtr_endpoint_post\n\nSyzbot reported slab-out-of-bounds Read in\nqrtr_endpoint_post. The problem was in wrong\n_size_ type:\n\n\tif (len != ALIGN(size, 4) + hdrlen)\n\t\tgoto err;\n\nIf size from qrtr_hdr is 4294967293 (0xfffffffd), the result of\nALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293\nin header this check won't fail and\n\n\tskb_put_data(skb, data + hdrlen, size);\n\nwill read out of bound from data, which is hdrlen allocated block.","modified":"2026-03-23T05:11:27.613970Z","published":"2024-05-21T15:15:13.177Z","related":["SUSE-SU-2024:2010-1","SUSE-SU-2024:2183-1","SUSE-SU-2024:2185-1","SUSE-SU-2025:01995-1"],"references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f"},{"type":"FIX","url":"https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8"},{"type":"FIX","url":"https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d"},{"type":"FIX","url":"https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6"},{"type":"FIX","url":"https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"4.15"},{"fixed":"4.19.196"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.128"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.46"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.12.13"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc2"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc3"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc4"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc5"}]},{"events":[{"introduced":"0"},{"last_affected":"5.13-rc6"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47240.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"}]}