{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53253","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.394Z","datePublished":"2026-06-25T08:39:44.612Z","dateUpdated":"2026-06-28T06:40:57.768Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-28T06:40:57.768Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: bnep: reject short frames before parsing\n\nA BNEP peer can send a short BNEP SDU. bnep_rx_frame() reads the\npacket type byte immediately and, for control packets, reads the control\nopcode and setup UUID-size byte before proving that those bytes are\npresent. bnep_rx_control() also dereferences the control opcode without\nrejecting an empty control payload.\n\nUse skb_pull_data() for the fixed fields in bnep_rx_frame() so a NULL\nreturn gates each dereference. Split the control handler so the frame\npath can pass an opcode that has already been pulled, and keep the\nbyte-buffer wrapper for extension control payloads.\n\nFor BNEP_SETUP_CONN_REQ, name the UUID-size byte before pulling the\nsetup payload. struct bnep_setup_conn_req carries destination and source\nservice UUIDs after that byte, each uuid_size bytes, so the parser now\ndocuments that tuple explicitly instead of leaving the pull length as an\nopaque multiplication.\n\nValidation reproduced this kernel report:\nKASAN slab-out-of-bounds in bnep_rx_frame.isra.0+0x130c/0x1790\nThe buggy address belongs to the object at ffff88800c0f7908 which belongs\nto the cache kmalloc-8 of size 8\nThe buggy address is located 0 bytes to the right of allocated 1-byte\nregion [ffff88800c0f7908, ffff88800c0f7909)\nRead of size 1\nCall trace:\n  dump_stack_lvl+0xb3/0x140 (?:?)\n  print_address_description+0x57/0x3a0 (?:?)\n  bnep_rx_frame+0x130c/0x1790 (net/bluetooth/bnep/core.c:306)\n  print_report+0xb9/0x2b0 (?:?)\n  __virt_addr_valid+0x1ba/0x3a0 (?:?)\n  srso_alias_return_thunk+0x5/0xfbef5 (?:?)\n  kasan_addr_to_slab+0x21/0x60 (?:?)\n  kasan_report+0xe0/0x110 (?:?)\n  process_one_work+0xfce/0x17e0 (kernel/workqueue.c:3200)\n  worker_thread+0x65c/0xe40 (?:?)\n  __kthread_parkme+0x184/0x230 (?:?)\n  kthread+0x35e/0x470 (?:?)\n  _raw_spin_unlock_irq+0x28/0x50 (?:?)\n  ret_from_fork+0x586/0x870 (?:?)\n  __switch_to+0x74f/0xdc0 (?:?)\n  ret_from_fork_asm+0x1a/0x30 (?:?)"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/bnep/core.c"],"versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"0ef2ea86c82b2615902d085cd5a586fe9f58994f","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"2b83afb19293e4de700edae306115f18966dc4f9","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"691f14b6a48b637655755134f1e551c7c6fedc2e","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"d76dec1a37122bc16d83d059c08c0512ea8de909","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"c893e17d2809ec9c4b3f1cdd5847cecbc27a311b","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"be837cd09897e9e6e1958174501d467bdcbcc2bc","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"6770d3a8acdf9151769180cc3710346c4cfbe6f0","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/bnep/core.c"],"versions":[{"version":"2.6.12","status":"affected"},{"version":"0","lessThan":"2.6.12","status":"unaffected","versionType":"semver"},{"version":"5.15.210","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.176","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.143","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.94","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.36","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.13","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"2.6.12","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.12.94"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.18.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0ef2ea86c82b2615902d085cd5a586fe9f58994f"},{"url":"https://git.kernel.org/stable/c/2b83afb19293e4de700edae306115f18966dc4f9"},{"url":"https://git.kernel.org/stable/c/691f14b6a48b637655755134f1e551c7c6fedc2e"},{"url":"https://git.kernel.org/stable/c/d76dec1a37122bc16d83d059c08c0512ea8de909"},{"url":"https://git.kernel.org/stable/c/c893e17d2809ec9c4b3f1cdd5847cecbc27a311b"},{"url":"https://git.kernel.org/stable/c/be837cd09897e9e6e1958174501d467bdcbcc2bc"},{"url":"https://git.kernel.org/stable/c/6770d3a8acdf9151769180cc3710346c4cfbe6f0"}],"title":"Bluetooth: bnep: reject short frames before parsing","x_generator":{"engine":"bippy-1.2.0"}}}}