{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-43493 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-43493 is a critical denial of service vulnerability in Linux kernel, published on 19 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-43493 and fix it if it is affected.\n\nWhat it is: CVE-2026-43493 is a critical denial of service vulnerability in Linux kernel, published on 19 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-43493 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-2026-43493/ (Markdown: https://insights.sbomify.com/CVE-2026-43493/index.md)","id":"CVE-2026-43493","markdown":"https://insights.sbomify.com/CVE-2026-43493/index.md","name":"CVE-2026-43493","record":{"aliases":["BELL-CVE-2026-43493","DEBIAN-CVE-2026-43493","GHSA-v9g7-8cgp-9v29","ROOT-OS-DEBIAN-11-CVE-2026-43493","ROOT-OS-DEBIAN-12-CVE-2026-43493","ROOT-OS-UBUNTU-2204-CVE-2026-43493","ROOT-OS-UBUNTU-2404-CVE-2026-43493","UBUNTU-CVE-2026-43493"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A flaw in the Linux kernel's pcrypt module fails to handle EBUSY errors correctly, potentially causing a 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":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-390","name":"Detection of Error Condition Without Action"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: pcrypt - Fix handling of MAY_BACKLOG requests\n\nMAY_BACKLOG requests can return EBUSY.  Handle them by checking\nfor that value and filtering out EINPROGRESS notifications.","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":"crypto: pcrypt - Fix handling of MAY_BACKLOG requests","id":"CVE-2026-43493","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"net/rds: reset op_nents when zerocopy page pin fails","id":"CVE-2026-43494"},"packages":[],"prev":{"headline":"lib/crypto: mpi: Fix integer underflow in mpi_read_raw_from_sgl()","id":"CVE-2026-43492"},"products":["Linux"],"published":"2026-05-19","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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A flaw in the Linux kernel's pcrypt module fails to handle EBUSY errors correctly, potentially causing a denial of service.","url":"https://insights.sbomify.com/CVE-2026-43493/"}