{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-98095 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98095 is a medium-severity vulnerability in Linux kernel, published on 25 Sep 2026. 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-2026-98095 and fix it if it is affected.\n\nWhat it is: CVE-2026-98095 is a medium-severity vulnerability in Linux kernel, published on 25 Sep 2026. 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-2026-98095 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-2026-98095/ (Markdown: https://insights.sbomify.com/CVE-2026-98095/index.md)","id":"CVE-2026-98095","markdown":"https://insights.sbomify.com/CVE-2026-98095/index.md","name":"CVE-2026-98095","record":{"aliases":["AZL-104838","BELL-CVE-2026-98095","DEBIAN-CVE-2026-98095","GHSA-8w27-88hq-2pm4","UBUNTU-CVE-2026-98095"],"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":"A local attacker can trigger a kernel BUG and denial of service by exploiting an integer overflow in the af_packet module's header parsing.","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":"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":[{"id":"CWE-681","name":"Incorrect Conversion between Numeric Types"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\naf_packet: Don't cast tpacket_hdr.tp_len to int in tpacket_parse_header().\n\nsyzbot reported BUG() in sock_sendmsg_nosec(). [0]\n\nThe problem is that tpacket_parse_header() casts user-provided\ntpacket_hdr.tp_len, which is u32, to int.\n\nIf the length is larger than INT_MAX, the following condition\nin tpacket_parse_header() passes,\n\n  if (unlikely(tp_len \u003e size_max))\n\nand any negative value can be returned to the caller, up to\nsock_sendmsg_nosec().\n\nThe repro set tpacket_hdr.tp_len to 0xfffffdef, which is cast\nto -EIOCBQUEUED (-529), triggering BUG() in sock_sendmsg_nosec().\n\n  *(uint64_t*)0x200000000008 = 0xfffffdef;\n  ...\n  syscall(__NR_write, /*fd=*/r[0], /*buf=*/0x200000000000ul, /*count=*/1ul);\n\nLet's define the local tp_len as u32 in tpacket_parse_header().\n\n[0]:\nkernel BUG at net/socket.c:803!\nOops: invalid opcode: 0000 [#1] SMP KASAN PTI\nCPU: 0 UID: 0 PID: 5628 Comm: syz-executor176 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026\nRIP: 0010:sock_sendmsg_nosec+0x145/0x180 net/socket.c:803\nCode: 06 67 48 0f b9 3a eb 95 e8 e8 3a 22 f8 48 89 df 4c 89 f6 4c 89 e2 4d 89 fb 2e e8 32 a5 5c 16 e9 51 ff ff ff e8 cc 3a 22 f8 90 \u003c0f\u003e 0b e8 c4 3a 22 f8 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 28\nRSP: 0018:ffffc90003aefb48 EFLAGS: 00010293\nRAX: ffffffff89a578d4 RBX: ffff8880764c67c0 RCX: ffff88807fb23e80\nRDX: 0000000000000000 RSI: 00000000fffffdef RDI: 00000000fffffdef\nRBP: 00000000fffffdef R08: ffffc90003aef747 R09: 1ffff9200075dee8\nR10: dffffc0000000000 R11: fffff5200075dee9 R12: 0000000000000001\nR13: dffffc0000000000 R14: ffffc90003aefbc0 R15: ffffffff8aac4310\nFS:  000055559101b400(0000) GS:ffff888124ce0000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000200000000210 CR3: 0000000073dca000 CR4: 00000000003526f0\nCall Trace:\n \u003cTASK\u003e\n __sock_sendmsg net/socket.c:815 [inline]\n sock_write_iter+0x2de/0x3e0 net/socket.c:1266\n new_sync_write fs/read_write.c:595 [inline]\n vfs_write+0x612/0xba0 fs/read_write.c:687\n ksys_write+0x150/0x270 fs/read_write.c:739\n do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]\n do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f173130ecb9\nCode: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 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 d8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffd67e44248 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\nRAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f173130ecb9\nRDX: 0000000000000001 RSI: 0000200000000000 RDI: 0000000000000003\nRBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd67e44388\nR13: 0000000000000002 R14: 00002000000000c0 R15: 0000000000000002\n \u003c/TASK\u003e","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":"af_packet: Don't cast tpacket_hdr.tp_len to int in tpacket_parse_header().","id":"CVE-2026-98095","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"integer_overflow","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"ipv6: sr: restore network header before routing and forwarding","id":"CVE-2026-98096"},"packages":[],"prev":{"headline":"staging: fbtft: make dirty_lock IRQ-safe","id":"CVE-2026-98094"},"products":["Linux"],"published":"2026-09-25","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A local attacker can trigger a kernel BUG and denial of service by exploiting an integer overflow in the af_packet module's header parsing.","url":"https://insights.sbomify.com/CVE-2026-98095/"}