{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2022-50534 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2022-50534 is a medium-severity denial of service vulnerability in Linux kernel, published on 7 Oct 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-2022-50534 and fix it if it is affected.\n\nWhat it is: CVE-2022-50534 is a medium-severity denial of service vulnerability in Linux kernel, published on 7 Oct 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-2022-50534 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-2022-50534/ (Markdown: https://insights.sbomify.com/CVE-2022-50534/index.md)","id":"CVE-2022-50534","markdown":"https://insights.sbomify.com/CVE-2022-50534/index.md","name":"CVE-2022-50534","record":{"aliases":["DEBIAN-CVE-2022-50534","GHSA-84fr-rw9r-j8p4","UBUNTU-CVE-2022-50534"],"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 flaw in the Linux kernel's dm thin driver causes a softlockup and kernel panic when metadata commit fails, leading to denial of service.","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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm thin: Use last transaction's pmd-\u003eroot when commit failed\n\nRecently we found a softlock up problem in dm thin pool btree lookup\ncode due to corrupted metadata:\n\n Kernel panic - not syncing: softlockup: hung tasks\n CPU: 7 PID: 2669225 Comm: kworker/u16:3\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)\n Workqueue: dm-thin do_worker [dm_thin_pool]\n Call Trace:\n   \u003cIRQ\u003e\n   dump_stack+0x9c/0xd3\n   panic+0x35d/0x6b9\n   watchdog_timer_fn.cold+0x16/0x25\n   __run_hrtimer+0xa2/0x2d0\n   \u003c/IRQ\u003e\n   RIP: 0010:__relink_lru+0x102/0x220 [dm_bufio]\n   __bufio_new+0x11f/0x4f0 [dm_bufio]\n   new_read+0xa3/0x1e0 [dm_bufio]\n   dm_bm_read_lock+0x33/0xd0 [dm_persistent_data]\n   ro_step+0x63/0x100 [dm_persistent_data]\n   btree_lookup_raw.constprop.0+0x44/0x220 [dm_persistent_data]\n   dm_btree_lookup+0x16f/0x210 [dm_persistent_data]\n   dm_thin_find_block+0x12c/0x210 [dm_thin_pool]\n   __process_bio_read_only+0xc5/0x400 [dm_thin_pool]\n   process_thin_deferred_bios+0x1a4/0x4a0 [dm_thin_pool]\n   process_one_work+0x3c5/0x730\n\nFollowing process may generate a broken btree mixed with fresh and\nstale btree nodes, which could get dm thin trapped in an infinite loop\nwhile looking up data block:\n Transaction 1: pmd-\u003eroot = A, A-\u003eB-\u003eC   // One path in btree\n                pmd-\u003eroot = X, X-\u003eY-\u003eZ   // Copy-up\n Transaction 2: X,Z is updated on disk, Y write failed.\n                // Commit failed, dm thin becomes read-only.\n                process_bio_read_only\n\t\t dm_thin_find_block\n\t\t  __find_block\n\t\t   dm_btree_lookup(pmd-\u003eroot)\nThe pmd-\u003eroot points to a broken btree, Y may contain stale node\npointing to any block, for example X, which gets dm thin trapped into\na dead loop while looking up Z.\n\nFix this by setting pmd-\u003eroot in __open_metadata(), so that dm thin\nwill use the last transaction's pmd-\u003eroot if commit failed.\n\nFetch a reproducer in [Link].\n\nLinke: https://bugzilla.kernel.org/show_bug.cgi?id=216790","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":"dm thin: Use last transaction's pmd-\u003eroot when commit failed","id":"CVE-2022-50534","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2022"},"n_packages":0,"n_references":9,"next":{"headline":"drm/amd/display: Fix potential null-deref in dm_resume","id":"CVE-2022-50535"},"packages":[],"prev":{"headline":"wifi: mac80211: mlme: fix null-ptr deref on failed assoc","id":"CVE-2022-50533"},"products":["Linux"],"published":"2025-10-07","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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A flaw in the Linux kernel's dm thin driver causes a softlockup and kernel panic when metadata commit fails, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2022-50534/"}