{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-21981 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-21981 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-2025-21981 and fix it if it is affected.\n\nWhat it is: CVE-2025-21981 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-2025-21981 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-2025-21981/ (Markdown: https://insights.sbomify.com/CVE-2025-21981/index.md)","id":"CVE-2025-21981","markdown":"https://insights.sbomify.com/CVE-2025-21981/index.md","name":"CVE-2025-21981","record":{"aliases":["AZL-59757","AZL-59835","BELL-CVE-2025-21981","DEBIAN-CVE-2025-21981","GHSA-7jcj-vjq7-xp8h","ROOT-OS-UBUNTU-2404-CVE-2025-21981","UBUNTU-CVE-2025-21981"],"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 memory leak in the Linux kernel ice driver during reset allows attackers to exhaust system memory, causing 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":"cisa-adp","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-401","name":"Missing Release of Memory after Effective Lifetime"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix memory leak in aRFS after reset\n\nFix aRFS (accelerated Receive Flow Steering) structures memory leak by\nadding a checker to verify if aRFS memory is already allocated while\nconfiguring VSI. aRFS objects are allocated in two cases:\n- as part of VSI initialization (at probe), and\n- as part of reset handling\n\nHowever, VSI reconfiguration executed during reset involves memory\nallocation one more time, without prior releasing already allocated\nresources. This led to the memory leak with the following signature:\n\n[root@os-delivery ~]# cat /sys/kernel/debug/kmemleak\nunreferenced object 0xff3c1ca7252e6000 (size 8192):\n  comm \"kworker/0:0\", pid 8, jiffies 4296833052\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace (crc 0):\n    [\u003cffffffff991ec485\u003e] __kmalloc_cache_noprof+0x275/0x340\n    [\u003cffffffffc0a6e06a\u003e] ice_init_arfs+0x3a/0xe0 [ice]\n    [\u003cffffffffc09f1027\u003e] ice_vsi_cfg_def+0x607/0x850 [ice]\n    [\u003cffffffffc09f244b\u003e] ice_vsi_setup+0x5b/0x130 [ice]\n    [\u003cffffffffc09c2131\u003e] ice_init+0x1c1/0x460 [ice]\n    [\u003cffffffffc09c64af\u003e] ice_probe+0x2af/0x520 [ice]\n    [\u003cffffffff994fbcd3\u003e] local_pci_probe+0x43/0xa0\n    [\u003cffffffff98f07103\u003e] work_for_cpu_fn+0x13/0x20\n    [\u003cffffffff98f0b6d9\u003e] process_one_work+0x179/0x390\n    [\u003cffffffff98f0c1e9\u003e] worker_thread+0x239/0x340\n    [\u003cffffffff98f14abc\u003e] kthread+0xcc/0x100\n    [\u003cffffffff98e45a6d\u003e] ret_from_fork+0x2d/0x50\n    [\u003cffffffff98e083ba\u003e] ret_from_fork_asm+0x1a/0x30\n    ...","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":"ice: fix memory leak in aRFS after reset","id":"CVE-2025-21981","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":7,"next":{"headline":"pinctrl: nuvoton: npcm8xx: Add NULL check in npcm8xx_gpio_fw","id":"CVE-2025-21982"},"packages":[],"prev":{"headline":"sched: address a potential NULL pointer dereference in the GRED scheduler.","id":"CVE-2025-21980"},"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A memory leak in the Linux kernel ice driver during reset allows attackers to exhaust system memory, causing denial of service.","url":"https://insights.sbomify.com/CVE-2025-21981/"}