{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53327 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53327 is a medium-severity vulnerability in Linux kernel, published on 16 Sep 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-2023-53327 and fix it if it is affected.\n\nWhat it is: CVE-2023-53327 is a medium-severity vulnerability in Linux kernel, published on 16 Sep 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-2023-53327 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-2023-53327/ (Markdown: https://insights.sbomify.com/CVE-2023-53327/index.md)","id":"CVE-2023-53327","markdown":"https://insights.sbomify.com/CVE-2023-53327/index.md","name":"CVE-2023-53327","record":{"aliases":["BELL-CVE-2023-53327","DEBIAN-CVE-2023-53327","GHSA-5j3v-w49r-w347","UBUNTU-CVE-2023-53327"],"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":"An integer overflow in the Linux kernel iommufd selftest allows a local attacker to trigger a kernel warning and potential denial of service.","user_interaction":"not_required","vuln_class":"integer_overflow"},"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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommufd/selftest: Catch overflow of uptr and length\n\nsyzkaller hits a WARN_ON when trying to have a uptr close to UINTPTR_MAX:\n\n  WARNING: CPU: 1 PID: 393 at drivers/iommu/iommufd/selftest.c:403 iommufd_test+0xb19/0x16f0\n  Modules linked in:\n  CPU: 1 PID: 393 Comm: repro Not tainted 6.2.0-c9c3395d5e3d #1\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n  RIP: 0010:iommufd_test+0xb19/0x16f0\n  Code: 94 c4 31 ff 44 89 e6 e8 a5 54 17 ff 45 84 e4 0f 85 bb 0b 00 00 41 be fb ff ff ff e8 31 53 17 ff e9 a0 f7 ff ff e8 27 53 17 ff \u003c0f\u003e 0b 41 be 8\n  RSP: 0018:ffffc90000eabdc0 EFLAGS: 00010246\n  RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8214c487\n  RDX: 0000000000000000 RSI: ffff88800f5c8000 RDI: 0000000000000002\n  RBP: ffffc90000eabe48 R08: 0000000000000000 R09: 0000000000000001\n  R10: 0000000000000001 R11: 0000000000000000 R12: 00000000cd2b0000\n  R13: 00000000cd2af000 R14: 0000000000000000 R15: ffffc90000eabe68\n  FS:  00007f94d76d5740(0000) GS:ffff88807dd00000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 0000000020000043 CR3: 0000000006880006 CR4: 0000000000770ee0\n  PKRU: 55555554\n  Call Trace:\n   \u003cTASK\u003e\n   ? write_comp_data+0x2f/0x90\n   iommufd_fops_ioctl+0x1ef/0x310\n   __x64_sys_ioctl+0x10e/0x160\n   ? __pfx_iommufd_fops_ioctl+0x10/0x10\n   do_syscall_64+0x3b/0x90\n   entry_SYSCALL_64_after_hwframe+0x72/0xdc\n\nCheck that the user memory range doesn't overflow.","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":"iommufd/selftest: Catch overflow of uptr and length","id":"CVE-2023-53327","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"integer_overflow","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"fs/ntfs3: Enhance sanity check while generating attr_list","id":"CVE-2023-53328"},"packages":[],"prev":{"headline":"powerpc: Don't try to copy PPR for task with NULL pt_regs","id":"CVE-2023-53326"},"products":["Linux"],"published":"2025-09-16","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"An integer overflow in the Linux kernel iommufd selftest allows a local attacker to trigger a kernel warning and potential denial of service.","url":"https://insights.sbomify.com/CVE-2023-53327/"}