{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-53255 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-53255 is a high-severity memory corruption vulnerability in Linux kernel, published on 25 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-53255 and fix it if it is affected.\n\nWhat it is: CVE-2026-53255 is a high-severity memory corruption vulnerability in Linux kernel, published on 25 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-53255 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-53255/ (Markdown: https://insights.sbomify.com/CVE-2026-53255/index.md)","id":"CVE-2026-53255","markdown":"https://insights.sbomify.com/CVE-2026-53255/index.md","name":"CVE-2026-53255","record":{"aliases":["AZL-90680","BELL-CVE-2026-53255","DEBIAN-CVE-2026-53255","GHSA-hxxh-4jr7-w99w","ROOT-OS-DEBIAN-11-CVE-2026-53255","ROOT-OS-DEBIAN-12-CVE-2026-53255","ROOT-OS-UBUNTU-2204-CVE-2026-53255","ROOT-OS-UBUNTU-2404-CVE-2026-53255","UBUNTU-CVE-2026-53255"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel Bluetooth","requires_auth":"low_privilege","summary":"A local attacker can trigger an out-of-bounds read in the Linux kernel Bluetooth subsystem via malformed advertising data, causing a crash or information leak.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.1,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: validate advertising TLV before type checks\n\ntlv_data_is_valid() reads each advertising data field length from\ndata[i], then inspects data[i + 1] for managed EIR types before\nchecking that the current field still fits inside the supplied buffer.\n\nA malformed field whose length byte is the last byte of the buffer can\ntherefore make the parser read one byte past the advertising data.\n\nKASAN reported the following when a malformed MGMT_OP_ADD_ADVERTISING\nrequest reached that path:\n\n  BUG: KASAN: vmalloc-out-of-bounds in tlv_data_is_valid()\n  Read of size 1\n  Call trace:\n    tlv_data_is_valid()\n    add_advertising()\n    hci_mgmt_cmd()\n    hci_sock_sendmsg()\n\nMove the existing element-length check before any type-octet inspection\nso each non-empty element is proven to contain its type byte before the\nparser looks at data[i + 1].","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Bluetooth: MGMT: validate advertising TLV before type checks","id":"CVE-2026-53255","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind()","id":"CVE-2026-53256"},"packages":[],"prev":{"headline":"Bluetooth: RFCOMM: validate skb length in MCC handlers","id":"CVE-2026-53254"},"products":["Linux"],"published":"2026-06-25","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-15","vendors":["Linux"]},"summary":"A local attacker can trigger an out-of-bounds read in the Linux kernel Bluetooth subsystem via malformed advertising data, causing a crash or information leak.","url":"https://insights.sbomify.com/CVE-2026-53255/"}