{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-21956 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-21956 is a medium-severity denial of service vulnerability in Linux kernel, published on 1 Apr 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-2025-21956 and fix it if it is affected.\n\nWhat it is: CVE-2025-21956 is a medium-severity denial of service vulnerability in Linux kernel, published on 1 Apr 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-2025-21956 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-2025-21956/ (Markdown: https://insights.sbomify.com/CVE-2025-21956/index.md)","id":"CVE-2025-21956","markdown":"https://insights.sbomify.com/CVE-2025-21956/index.md","name":"CVE-2025-21956","record":{"aliases":["BELL-CVE-2025-21956","DEBIAN-CVE-2025-21956","GHSA-mq3v-g8q8-f78r","ROOT-OS-UBUNTU-2404-CVE-2025-21956","UBUNTU-CVE-2025-21956"],"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 case in the AMD display driver causes a kernel warning and potential instability when using 14-bit color depth, requiring a patch.","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\ndrm/amd/display: Assign normalized_pix_clk when color depth = 14\n\n[WHY \u0026 HOW]\nA warning message \"WARNING: CPU: 4 PID: 459 at ... /dc_resource.c:3397\ncalculate_phy_pix_clks+0xef/0x100 [amdgpu]\" occurs because the\ndisplay_color_depth == COLOR_DEPTH_141414 is not handled. This is\nobserved in Radeon RX 6600 XT.\n\nIt is fixed by assigning pix_clk * (14 * 3) / 24 - same as the rests.\n\nAlso fixes the indentation in get_norm_pix_clk.\n\n(cherry picked from commit 274a87eb389f58eddcbc5659ab0b180b37e92775)","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":"drm/amd/display: Assign normalized_pix_clk when color depth = 14","id":"CVE-2025-21956","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":8,"next":{"headline":"scsi: qla1280: Fix kernel oops when debug level \u003e 2","id":"CVE-2025-21957"},"packages":[],"prev":{"headline":"ksmbd: prevent connection release during oplock break notification","id":"CVE-2025-21955"},"products":["Linux"],"published":"2025-04-01","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 missing case in the AMD display driver causes a kernel warning and potential instability when using 14-bit color depth, requiring a patch.","url":"https://insights.sbomify.com/CVE-2025-21956/"}