{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-21668 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-21668 is a medium-severity denial of service vulnerability in Linux kernel, published on 31 Jan 2025. 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-2025-21668 and fix it if it is affected.\n\nWhat it is: CVE-2025-21668 is a medium-severity denial of service vulnerability in Linux kernel, published on 31 Jan 2025. 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-2025-21668 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-2025-21668/ (Markdown: https://insights.sbomify.com/CVE-2025-21668/index.md)","id":"CVE-2025-21668","markdown":"https://insights.sbomify.com/CVE-2025-21668/index.md","name":"CVE-2025-21668","record":{"aliases":["BELL-CVE-2025-21668","DEBIAN-CVE-2025-21668","GHSA-qph5-m27v-3fjm","UBUNTU-CVE-2025-21668"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A missing loop break condition in the i.MX8MP block control driver causes an out-of-bounds exception during shutdown, leading to a system crash.","user_interaction":"not_required","vuln_class":"denial_of_service"},"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-835","name":"Loop with Unreachable Exit Condition"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\npmdomain: imx8mp-blk-ctrl: add missing loop break condition\n\nCurrently imx8mp_blk_ctrl_remove() will continue the for loop\nuntil an out-of-bounds exception occurs.\n\npstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\npc : dev_pm_domain_detach+0x8/0x48\nlr : imx8mp_blk_ctrl_shutdown+0x58/0x90\nsp : ffffffc084f8bbf0\nx29: ffffffc084f8bbf0 x28: ffffff80daf32ac0 x27: 0000000000000000\nx26: ffffffc081658d78 x25: 0000000000000001 x24: ffffffc08201b028\nx23: ffffff80d0db9490 x22: ffffffc082340a78 x21: 00000000000005b0\nx20: ffffff80d19bc180 x19: 000000000000000a x18: ffffffffffffffff\nx17: ffffffc080a39e08 x16: ffffffc080a39c98 x15: 4f435f464f006c72\nx14: 0000000000000004 x13: ffffff80d0172110 x12: 0000000000000000\nx11: ffffff80d0537740 x10: ffffff80d05376c0 x9 : ffffffc0808ed2d8\nx8 : ffffffc084f8bab0 x7 : 0000000000000000 x6 : 0000000000000000\nx5 : ffffff80d19b9420 x4 : fffffffe03466e60 x3 : 0000000080800077\nx2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000000\nCall trace:\n dev_pm_domain_detach+0x8/0x48\n platform_shutdown+0x2c/0x48\n device_shutdown+0x158/0x268\n kernel_restart_prepare+0x40/0x58\n kernel_kexec+0x58/0xe8\n __do_sys_reboot+0x198/0x258\n __arm64_sys_reboot+0x2c/0x40\n invoke_syscall+0x5c/0x138\n el0_svc_common.constprop.0+0x48/0xf0\n do_el0_svc+0x24/0x38\n el0_svc+0x38/0xc8\n el0t_64_sync_handler+0x120/0x130\n el0t_64_sync+0x190/0x198\nCode: 8128c2d0 ffffffc0 aa1e03e9 d503201f","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":"pmdomain: imx8mp-blk-ctrl: add missing loop break condition","id":"CVE-2025-21668","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"vsock/virtio: discard packets if the transport changes","id":"CVE-2025-21669"},"packages":[],"prev":{"headline":"iomap: avoid avoid truncating 64-bit offset to 32 bits","id":"CVE-2025-21667"},"products":["Linux"],"published":"2025-01-31","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 missing loop break condition in the i.MX8MP block control driver causes an out-of-bounds exception during shutdown, leading to a system crash.","url":"https://insights.sbomify.com/CVE-2025-21668/"}