{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-40082 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40082 is a high-severity memory corruption vulnerability in Linux kernel, published on 28 Oct 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-2025-40082 and fix it if it is affected.\n\nWhat it is: CVE-2025-40082 is a high-severity memory corruption vulnerability in Linux kernel, published on 28 Oct 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-2025-40082 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-2025-40082/ (Markdown: https://insights.sbomify.com/CVE-2025-40082/index.md)","id":"CVE-2025-40082","markdown":"https://insights.sbomify.com/CVE-2025-40082/index.md","name":"CVE-2025-40082","record":{"aliases":["AZL-78488","BELL-CVE-2025-40082","DEBIAN-CVE-2025-40082","GHSA-r76g-qww9-ch8r","ROOT-OS-DEBIAN-11-CVE-2025-40082","ROOT-OS-DEBIAN-12-CVE-2025-40082","ROOT-OS-DEBIAN-13-CVE-2025-40082","ROOT-OS-UBUNTU-2204-CVE-2025-40082","UBUNTU-CVE-2025-40082"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A slab-out-of-bounds read in the Linux kernel's HFS+ filesystem allows attackers to cause a denial of service or leak sensitive memory information.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc()\n\nBUG: KASAN: slab-out-of-bounds in hfsplus_uni2asc+0xa71/0xb90 fs/hfsplus/unicode.c:186\nRead of size 2 at addr ffff8880289ef218 by task syz.6.248/14290\n\nCPU: 0 UID: 0 PID: 14290 Comm: syz.6.248 Not tainted 6.16.4 #1 PREEMPT(full)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1b0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:378 [inline]\n print_report+0xca/0x5f0 mm/kasan/report.c:482\n kasan_report+0xca/0x100 mm/kasan/report.c:595\n hfsplus_uni2asc+0xa71/0xb90 fs/hfsplus/unicode.c:186\n hfsplus_listxattr+0x5b6/0xbd0 fs/hfsplus/xattr.c:738\n vfs_listxattr+0xbe/0x140 fs/xattr.c:493\n listxattr+0xee/0x190 fs/xattr.c:924\n filename_listxattr fs/xattr.c:958 [inline]\n path_listxattrat+0x143/0x360 fs/xattr.c:988\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xcb/0x4c0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fe0e9fae16d\nCode: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007fe0eae67f98 EFLAGS: 00000246 ORIG_RAX: 00000000000000c3\nRAX: ffffffffffffffda RBX: 00007fe0ea205fa0 RCX: 00007fe0e9fae16d\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000000\nRBP: 00007fe0ea0480f0 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 00007fe0ea206038 R14: 00007fe0ea205fa0 R15: 00007fe0eae48000\n \u003c/TASK\u003e\n\nAllocated by task 14290:\n kasan_save_stack+0x24/0x50 mm/kasan/common.c:47\n kasan_save_track+0x14/0x30 mm/kasan/common.c:68\n poison_kmalloc_redzone mm/kasan/common.c:377 [inline]\n __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394\n kasan_kmalloc include/linux/kasan.h:260 [inline]\n __do_kmalloc_node mm/slub.c:4333 [inline]\n __kmalloc_noprof+0x219/0x540 mm/slub.c:4345\n kmalloc_noprof include/linux/slab.h:909 [inline]\n hfsplus_find_init+0x95/0x1f0 fs/hfsplus/bfind.c:21\n hfsplus_listxattr+0x331/0xbd0 fs/hfsplus/xattr.c:697\n vfs_listxattr+0xbe/0x140 fs/xattr.c:493\n listxattr+0xee/0x190 fs/xattr.c:924\n filename_listxattr fs/xattr.c:958 [inline]\n path_listxattrat+0x143/0x360 fs/xattr.c:988\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xcb/0x4c0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nWhen hfsplus_uni2asc is called from hfsplus_listxattr,\nit actually passes in a struct hfsplus_attr_unistr*.\nThe size of the corresponding structure is different from that of hfsplus_unistr,\nso the previous fix (94458781aee6) is insufficient.\nThe pointer on the unicode buffer is still going beyond the allocated memory.\n\nThis patch introduces two warpper functions hfsplus_uni2asc_xattr_str and\nhfsplus_uni2asc_str to process two unicode buffers,\nstruct hfsplus_attr_unistr* and struct hfsplus_unistr* respectively.\nWhen ustrlen value is bigger than the allocated memory size,\nthe ustrlen value is limited to an safe size.","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":"hfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc()","id":"CVE-2025-40082","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"memory_corruption","year":"2025"},"n_packages":0,"n_references":6,"next":{"headline":"net/sched: sch_qfq: Fix null-deref in agg_dequeue","id":"CVE-2025-40083"},"packages":[],"prev":{"headline":"perf: arm_spe: Prevent overflow in PERF_IDX2OFF()","id":"CVE-2025-40081"},"products":["Linux"],"published":"2025-10-28","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":"2026-10-15","vendors":["Linux"]},"summary":"A slab-out-of-bounds read in the Linux kernel's HFS+ filesystem allows attackers to cause a denial of service or leak sensitive memory information.","url":"https://insights.sbomify.com/CVE-2025-40082/"}