{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-74277 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-74277 is a high-severity vulnerability in Linux, published on 15 Aug 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-2026-74277 and fix it if it is affected.\n\nWhat it is: CVE-2026-74277 is a high-severity vulnerability in Linux, published on 15 Aug 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-2026-74277 in the wild and no public exploit code.\n\nAffected product: Linux. 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-2026-74277/ (Markdown: https://insights.sbomify.com/CVE-2026-74277/index.md)","id":"CVE-2026-74277","markdown":"https://insights.sbomify.com/CVE-2026-74277/index.md","name":"CVE-2026-74277","record":{"aliases":["BELL-CVE-2026-74277","DEBIAN-CVE-2026-74277","GHSA-v74x-xvfc-h3j3","UBUNTU-CVE-2026-74277"],"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 typo in the Linux kernel's IOMMU DMA mapping causes corrupted DMA lengths for P2PDMA, potentially leading to system instability or denial of service.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path\n\nIn iommu_dma_map_sg(), when handling PCI P2PDMA cases, the DMA length\nof the current scatterlist segment `s` is incorrectly assigned from the\nhead entry `sg-\u003elength` instead of the current entry `s-\u003elength`.\n\nThis typo causes all P2PDMA segments in the scatterlist to inherit the\nlength of the first segment, leading to corrupted DMA lengths for multi-\nsegment scatterlists.\n\nFix this by using `s-\u003elength` instead of `sg-\u003elength`.","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":"iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path","id":"CVE-2026-74277","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"ALSA: seq: Fix kernel heap address leak in bounce_error_event()","id":"CVE-2026-74278"},"packages":[],"prev":{"headline":"spi: xilinx: use FIFO occupancy register to determine buffer size","id":"CVE-2026-74276"},"products":["Linux"],"published":"2026-08-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-16","vendors":["Linux"]},"summary":"A typo in the Linux kernel's IOMMU DMA mapping causes corrupted DMA lengths for P2PDMA, potentially leading to system instability or denial of service.","url":"https://insights.sbomify.com/CVE-2026-74277/"}