{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-52833 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-52833 is a medium-severity vulnerability in Linux kernel, published on 21 May 2024. 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-2023-52833 and fix it if it is affected.\n\nWhat it is: CVE-2023-52833 is a medium-severity vulnerability in Linux kernel, published on 21 May 2024. 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-2023-52833 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-2023-52833/ (Markdown: https://insights.sbomify.com/CVE-2023-52833/index.md)","id":"CVE-2023-52833","markdown":"https://insights.sbomify.com/CVE-2023-52833/index.md","name":"CVE-2023-52833","record":{"aliases":["BELL-CVE-2023-52833","DEBIAN-CVE-2023-52833","GHSA-8crr-8542-6rh6","UBUNTU-CVE-2023-52833"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel Bluetooth","requires_auth":"low_privilege","summary":"A local attacker can trigger a kernel crash in the Linux Bluetooth driver by causing a null pointer dereference during device shutdown.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: Add date-\u003eevt_skb is NULL check\n\nfix crash because of null pointers\n\n[ 6104.969662] BUG: kernel NULL pointer dereference, address: 00000000000000c8\n[ 6104.969667] #PF: supervisor read access in kernel mode\n[ 6104.969668] #PF: error_code(0x0000) - not-present page\n[ 6104.969670] PGD 0 P4D 0\n[ 6104.969673] Oops: 0000 [#1] SMP NOPTI\n[ 6104.969684] RIP: 0010:btusb_mtk_hci_wmt_sync+0x144/0x220 [btusb]\n[ 6104.969688] RSP: 0018:ffffb8d681533d48 EFLAGS: 00010246\n[ 6104.969689] RAX: 0000000000000000 RBX: ffff8ad560bb2000 RCX: 0000000000000006\n[ 6104.969691] RDX: 0000000000000000 RSI: ffffb8d681533d08 RDI: 0000000000000000\n[ 6104.969692] RBP: ffffb8d681533d70 R08: 0000000000000001 R09: 0000000000000001\n[ 6104.969694] R10: 0000000000000001 R11: 00000000fa83b2da R12: ffff8ad461d1d7c0\n[ 6104.969695] R13: 0000000000000000 R14: ffff8ad459618c18 R15: ffffb8d681533d90\n[ 6104.969697] FS:  00007f5a1cab9d40(0000) GS:ffff8ad578200000(0000) knlGS:00000\n[ 6104.969699] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 6104.969700] CR2: 00000000000000c8 CR3: 000000018620c001 CR4: 0000000000760ef0\n[ 6104.969701] PKRU: 55555554\n[ 6104.969702] Call Trace:\n[ 6104.969708]  btusb_mtk_shutdown+0x44/0x80 [btusb]\n[ 6104.969732]  hci_dev_do_close+0x470/0x5c0 [bluetooth]\n[ 6104.969748]  hci_rfkill_set_block+0x56/0xa0 [bluetooth]\n[ 6104.969753]  rfkill_set_block+0x92/0x160\n[ 6104.969755]  rfkill_fop_write+0x136/0x1e0\n[ 6104.969759]  __vfs_write+0x18/0x40\n[ 6104.969761]  vfs_write+0xdf/0x1c0\n[ 6104.969763]  ksys_write+0xb1/0xe0\n[ 6104.969765]  __x64_sys_write+0x1a/0x20\n[ 6104.969769]  do_syscall_64+0x51/0x180\n[ 6104.969771]  entry_SYSCALL_64_after_hwframe+0x44/0xa9\n[ 6104.969773] RIP: 0033:0x7f5a21f18fef\n[ 6104.9] RSP: 002b:00007ffeefe39010 EFLAGS: 00000293 ORIG_RAX: 0000000000000001\n[ 6104.969780] RAX: ffffffffffffffda RBX: 000055c10a7560a0 RCX: 00007f5a21f18fef\n[ 6104.969781] RDX: 0000000000000008 RSI: 00007ffeefe39060 RDI: 0000000000000012\n[ 6104.969782] RBP: 00007ffeefe39060 R08: 0000000000000000 R09: 0000000000000017\n[ 6104.969784] R10: 00007ffeefe38d97 R11: 0000000000000293 R12: 0000000000000002\n[ 6104.969785] R13: 00007ffeefe39220 R14: 00007ffeefe391a0 R15: 000055c10a72acf0","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: btusb: Add date-\u003eevt_skb is NULL check","id":"CVE-2023-52833","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2023"},"n_packages":0,"n_references":6,"next":{"headline":"atl1c: Work around the DMA RX overflow issue","id":"CVE-2023-52834"},"packages":[],"prev":{"headline":"wifi: mac80211: don't return unset power in ieee80211_get_tx_power()","id":"CVE-2023-52832"},"products":["Linux"],"published":"2024-05-21","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A local attacker can trigger a kernel crash in the Linux Bluetooth driver by causing a null pointer dereference during device shutdown.","url":"https://insights.sbomify.com/CVE-2023-52833/"}