{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-38029 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-38029 is a medium-severity denial of service vulnerability in Linux kernel, published on 18 Jun 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-2025-38029 and fix it if it is affected.\n\nWhat it is: CVE-2025-38029 is a medium-severity denial of service vulnerability in Linux kernel, published on 18 Jun 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-2025-38029 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-2025-38029/ (Markdown: https://insights.sbomify.com/CVE-2025-38029/index.md)","id":"CVE-2025-38029","markdown":"https://insights.sbomify.com/CVE-2025-38029/index.md","name":"CVE-2025-38029","record":{"aliases":["AZL-64040","AZL-70274","BELL-CVE-2025-38029","DEBIAN-CVE-2025-38029","GHSA-j5w8-q98j-jcfx","ROOT-OS-DEBIAN-11-CVE-2025-38029","ROOT-OS-DEBIAN-12-CVE-2025-38029","ROOT-OS-DEBIAN-13-CVE-2025-38029","ROOT-OS-UBUNTU-2204-CVE-2025-38029","ROOT-OS-UBUNTU-2404-CVE-2025-38029","UBUNTU-CVE-2025-38029"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A kernel bug causes a crash when KASAN allocates memory in atomic context on s390, 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\nkasan: avoid sleepable page allocation from atomic context\n\napply_to_pte_range() enters the lazy MMU mode and then invokes\nkasan_populate_vmalloc_pte() callback on each page table walk iteration. \nHowever, the callback can go into sleep when trying to allocate a single\npage, e.g.  if an architecutre disables preemption on lazy MMU mode enter.\n\nOn s390 if make arch_enter_lazy_mmu_mode() -\u003e preempt_enable() and\narch_leave_lazy_mmu_mode() -\u003e preempt_disable(), such crash occurs:\n\n[    0.663336] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:321\n[    0.663348] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 2, name: kthreadd\n[    0.663358] preempt_count: 1, expected: 0\n[    0.663366] RCU nest depth: 0, expected: 0\n[    0.663375] no locks held by kthreadd/2.\n[    0.663383] Preemption disabled at:\n[    0.663386] [\u003c0002f3284cbb4eda\u003e] apply_to_pte_range+0xfa/0x4a0\n[    0.663405] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Not tainted 6.15.0-rc5-gcc-kasan-00043-gd76bb1ebb558-dirty #162 PREEMPT\n[    0.663408] Hardware name: IBM 3931 A01 701 (KVM/Linux)\n[    0.663409] Call Trace:\n[    0.663410]  [\u003c0002f3284c385f58\u003e] dump_stack_lvl+0xe8/0x140\n[    0.663413]  [\u003c0002f3284c507b9e\u003e] __might_resched+0x66e/0x700\n[    0.663415]  [\u003c0002f3284cc4f6c0\u003e] __alloc_frozen_pages_noprof+0x370/0x4b0\n[    0.663419]  [\u003c0002f3284ccc73c0\u003e] alloc_pages_mpol+0x1a0/0x4a0\n[    0.663421]  [\u003c0002f3284ccc8518\u003e] alloc_frozen_pages_noprof+0x88/0xc0\n[    0.663424]  [\u003c0002f3284ccc8572\u003e] alloc_pages_noprof+0x22/0x120\n[    0.663427]  [\u003c0002f3284cc341ac\u003e] get_free_pages_noprof+0x2c/0xc0\n[    0.663429]  [\u003c0002f3284cceba70\u003e] kasan_populate_vmalloc_pte+0x50/0x120\n[    0.663433]  [\u003c0002f3284cbb4ef8\u003e] apply_to_pte_range+0x118/0x4a0\n[    0.663435]  [\u003c0002f3284cbc7c14\u003e] apply_to_pmd_range+0x194/0x3e0\n[    0.663437]  [\u003c0002f3284cbc99be\u003e] __apply_to_page_range+0x2fe/0x7a0\n[    0.663440]  [\u003c0002f3284cbc9e88\u003e] apply_to_page_range+0x28/0x40\n[    0.663442]  [\u003c0002f3284ccebf12\u003e] kasan_populate_vmalloc+0x82/0xa0\n[    0.663445]  [\u003c0002f3284cc1578c\u003e] alloc_vmap_area+0x34c/0xc10\n[    0.663448]  [\u003c0002f3284cc1c2a6\u003e] __get_vm_area_node+0x186/0x2a0\n[    0.663451]  [\u003c0002f3284cc1e696\u003e] __vmalloc_node_range_noprof+0x116/0x310\n[    0.663454]  [\u003c0002f3284cc1d950\u003e] __vmalloc_node_noprof+0xd0/0x110\n[    0.663457]  [\u003c0002f3284c454b88\u003e] alloc_thread_stack_node+0xf8/0x330\n[    0.663460]  [\u003c0002f3284c458d56\u003e] dup_task_struct+0x66/0x4d0\n[    0.663463]  [\u003c0002f3284c45be90\u003e] copy_process+0x280/0x4b90\n[    0.663465]  [\u003c0002f3284c460940\u003e] kernel_clone+0xd0/0x4b0\n[    0.663467]  [\u003c0002f3284c46115e\u003e] kernel_thread+0xbe/0xe0\n[    0.663469]  [\u003c0002f3284c4e440e\u003e] kthreadd+0x50e/0x7f0\n[    0.663472]  [\u003c0002f3284c38c04a\u003e] __ret_from_fork+0x8a/0xf0\n[    0.663475]  [\u003c0002f3284ed57ff2\u003e] ret_from_fork+0xa/0x38\n\nInstead of allocating single pages per-PTE, bulk-allocate the shadow\nmemory prior to applying kasan_populate_vmalloc_pte() callback on a page\nrange.","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":"kasan: avoid sleepable page allocation from atomic context","id":"CVE-2025-38029","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":4,"next":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2025-38030"},"packages":[],"prev":{"headline":"NFS/localio: Fix a race in nfs_local_open_fh()","id":"CVE-2025-38028"},"products":["Linux"],"published":"2025-06-18","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":"2026-10-21","vendors":["Linux"]},"summary":"A kernel bug causes a crash when KASAN allocates memory in atomic context on s390, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2025-38029/"}