{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-23369 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-23369 is a medium-severity vulnerability in Linux kernel, published on 25 Mar 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-2026-23369 and fix it if it is affected.\n\nWhat it is: CVE-2026-23369 is a medium-severity vulnerability in Linux kernel, published on 25 Mar 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-2026-23369 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-2026-23369/ (Markdown: https://insights.sbomify.com/CVE-2026-23369/index.md)","id":"CVE-2026-23369","markdown":"https://insights.sbomify.com/CVE-2026-23369/index.md","name":"CVE-2026-23369","record":{"aliases":["BELL-CVE-2026-23369","DEBIAN-CVE-2026-23369","GHSA-vhcx-whwc-3wx5","ROOT-OS-DEBIAN-13-CVE-2026-23369","ROOT-OS-UBUNTU-2404-CVE-2026-23369","UBUNTU-CVE-2026-23369"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A race condition in the i801 I2C driver causes a kernel NULL pointer dereference and panic during boot, leading to denial of service.","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\ni2c: i801: Revert \"i2c: i801: replace acpi_lock with I2C bus lock\"\n\nThis reverts commit f707d6b9e7c18f669adfdb443906d46cfbaaa0c1.\n\nUnder rare circumstances, multiple udev threads can collect i801 device\ninfo on boot and walk i801_acpi_io_handler somewhat concurrently. The\nfirst will note the area is reserved by acpi to prevent further touches.\nThis ultimately causes the area to be deregistered. The second will\nenter i801_acpi_io_handler after the area is unregistered but before a\ncheck can be made that the area is unregistered. i2c_lock_bus relies on\nthe now unregistered area containing lock_ops to lock the bus. The end\nresult is a kernel panic on boot with the following backtrace;\n\n[   14.971872] ioatdma 0000:09:00.2: enabling device (0100 -\u003e 0102)\n[   14.971873] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[   14.971880] #PF: supervisor read access in kernel mode\n[   14.971884] #PF: error_code(0x0000) - not-present page\n[   14.971887] PGD 0 P4D 0\n[   14.971894] Oops: 0000 [#1] PREEMPT SMP PTI\n[   14.971900] CPU: 5 PID: 956 Comm: systemd-udevd Not tainted 5.14.0-611.5.1.el9_7.x86_64 #1\n[   14.971905] Hardware name: XXXXXXXXXXXXXXXXXXXXXXX BIOS 1.20.10.SV91 01/30/2023\n[   14.971908] RIP: 0010:i801_acpi_io_handler+0x2d/0xb0 [i2c_i801]\n[   14.971929] Code: 00 00 49 8b 40 20 41 57 41 56 4d 8b b8 30 04 00 00 49 89 ce 41 55 41 89 d5 41 54 49 89 f4 be 02 00 00 00 55 4c 89 c5 53 89 fb \u003c48\u003e 8b 00 4c 89 c7 e8 18 61 54 e9 80 bd 80 04 00 00 00 75 09 4c 3b\n[   14.971933] RSP: 0018:ffffbaa841483838 EFLAGS: 00010282\n[   14.971938] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff9685e01ba568\n[   14.971941] RDX: 0000000000000008 RSI: 0000000000000002 RDI: 0000000000000000\n[   14.971944] RBP: ffff9685ca22f028 R08: ffff9685ca22f028 R09: ffff9685ca22f028\n[   14.971948] R10: 000000000000000b R11: 0000000000000580 R12: 0000000000000580\n[   14.971951] R13: 0000000000000008 R14: ffff9685e01ba568 R15: ffff9685c222f000\n[   14.971954] FS:  00007f8287c0ab40(0000) GS:ffff96a47f940000(0000) knlGS:0000000000000000\n[   14.971959] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[   14.971963] CR2: 0000000000000000 CR3: 0000000168090001 CR4: 00000000003706f0\n[   14.971966] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[   14.971968] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[   14.971972] Call Trace:\n[   14.971977]  \u003cTASK\u003e\n[   14.971981]  ? show_trace_log_lvl+0x1c4/0x2df\n[   14.971994]  ? show_trace_log_lvl+0x1c4/0x2df\n[   14.972003]  ? acpi_ev_address_space_dispatch+0x16e/0x3c0\n[   14.972014]  ? __die_body.cold+0x8/0xd\n[   14.972021]  ? page_fault_oops+0x132/0x170\n[   14.972028]  ? exc_page_fault+0x61/0x150\n[   14.972036]  ? asm_exc_page_fault+0x22/0x30\n[   14.972045]  ? i801_acpi_io_handler+0x2d/0xb0 [i2c_i801]\n[   14.972061]  acpi_ev_address_space_dispatch+0x16e/0x3c0\n[   14.972069]  ? __pfx_i801_acpi_io_handler+0x10/0x10 [i2c_i801]\n[   14.972085]  acpi_ex_access_region+0x5b/0xd0\n[   14.972093]  acpi_ex_field_datum_io+0x73/0x2e0\n[   14.972100]  acpi_ex_read_data_from_field+0x8e/0x230\n[   14.972106]  acpi_ex_resolve_node_to_value+0x23d/0x310\n[   14.972114]  acpi_ds_evaluate_name_path+0xad/0x110\n[   14.972121]  acpi_ds_exec_end_op+0x321/0x510\n[   14.972127]  acpi_ps_parse_loop+0xf7/0x680\n[   14.972136]  acpi_ps_parse_aml+0x17a/0x3d0\n[   14.972143]  acpi_ps_execute_method+0x137/0x270\n[   14.972150]  acpi_ns_evaluate+0x1f4/0x2e0\n[   14.972158]  acpi_evaluate_object+0x134/0x2f0\n[   14.972164]  acpi_evaluate_integer+0x50/0xe0\n[   14.972173]  ? vsnprintf+0x24b/0x570\n[   14.972181]  acpi_ac_get_state.part.0+0x23/0x70\n[   14.972189]  get_ac_property+0x4e/0x60\n[   14.972195]  power_supply_show_property+0x90/0x1f0\n[   14.972205]  add_prop_uevent+0x29/0x90\n[   14.972213]  power_supply_uevent+0x109/0x1d0\n[   14.972222]  dev_uevent+0x10e/0x2f0\n[   14.972228]  uevent_show+0x8e/0x100\n[   14.972236]  dev_attr_show+0x19\n---truncated---","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":"i2c: i801: Revert \"i2c: i801: replace acpi_lock with I2C bus lock\"","id":"CVE-2026-23369","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"platform/x86: dell-wmi-sysman: Don't hex dump plaintext password data","id":"CVE-2026-23370"},"packages":[],"prev":{"headline":"net: phy: register phy led_triggers during probe to avoid AB-BA deadlock","id":"CVE-2026-23368"},"products":["Linux"],"published":"2026-03-25","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":"2026-05-11","vendors":["Linux"]},"summary":"A race condition in the i801 I2C driver causes a kernel NULL pointer dereference and panic during boot, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2026-23369/"}