{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-98358 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-98358 is a vulnerability in Linux, published on 6 Oct 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-2026-98358 and fix it if it is affected.\n\nWhat it is: CVE-2026-98358 is a vulnerability in Linux, published on 6 Oct 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-2026-98358 in the wild and no public exploit code.\n\nAffected product: Linux. 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-2026-98358/ (Markdown: https://insights.sbomify.com/CVE-2026-98358/index.md)","id":"CVE-2026-98358","markdown":"https://insights.sbomify.com/CVE-2026-98358/index.md","name":"CVE-2026-98358","record":{"aliases":["AZL-106140","BELL-CVE-2026-98358","DEBIAN-CVE-2026-98358","GHSA-w9qw-7vhq-g4m9","UBUNTU-CVE-2026-98358"],"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":"none","summary":"A remote attacker can cause a kernel crash in the Linux IB/iser driver by sending a specific invalidation command for an unregistered direction.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nIB/iser: reject a remote invalidation of an unregistered direction\n\nA write command whose data is sent entirely as immediate data is not\nregistered.  iser_reg_mem_fastreg() takes the DMA key path and leaves\nrdma_reg[ISER_DIR_OUT].desc at NULL, while iser_dma_map_task_data() has\nalready set dir[ISER_DIR_OUT].\n\niser_check_remote_inv() looks at dir[] alone and hands the descriptor to\niser_inv_desc(), which reads desc-\u003esig_protected.  A target that answers\nsuch a command with IB_WR_SEND_WITH_INV faults the initiator.\nLeaving those commands unregistered is deliberate.\n\nThe same function already terminates the connection when a target sends\na remote invalidation the initiator did not ask for.  A target that\ninvalidates a direction that was never registered is in the same class,\nso give it the same answer.\n\n  Oops: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] SMP KASAN NOPTI\n  KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]\n  CPU: 0 UID: 0 PID: 40 Comm: kworker/u8:2 Not tainted 7.2.0-rc5-ISERHOST-gf5098b6bae76-dirty #3 PREEMPT(lazy)\n  Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n  Workqueue: rxe_wq do_work\n  RIP: 0010:iser_task_rsp+0x6d6/0xec0\n  Code: 48 c1 ea 03 80 3c 02 00 0f 85 ba 06 00 00 48 8b 9b 78 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 20 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 06 0f 8e 76 06 00 00 80 7b 20 00 0f 84 3d 04\n  RSP: 0018:ffff88811b008db8 EFLAGS: 00010202\n  RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000001848\n  RDX: 0000000000000004 RSI: 1ffff11021587b12 RDI: 0000000000000020\n  RBP: ffff88810adc1ae4 R08: ffff888109b7f860 R09: ffffffff90a922c0\n  R10: ffff88810adc1a1c R11: 000000000000003c R12: ffff888109b7f800\n  R13: ffff88810adc1acc R14: ffff888109b7f820 R15: 0000000000000000\n  FS:  0000000000000000(0000) GS:ffff88818a676000(0000) knlGS:0000000000000000\n  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n  CR2: 00000000005afe2b CR3: 000000010af23005 CR4: 0000000000770ef0\n  PKRU: 55555554\n  Call Trace:\n   \u003cIRQ\u003e\n   __ib_process_cq+0xe1/0x390\n   ib_poll_handler+0x6e/0x200\n   irq_poll_softirq+0x1df/0x480\n   ? clockevents_program_event+0x2ba/0x860\n   ? __pfx_irq_poll_softirq+0x10/0x10\n   handle_softirqs+0x18e/0x590\n   ? __pfx_handle_softirqs+0x10/0x10\n   ? __hrtimer_rearm_deferred+0x156/0x450\n   do_softirq+0x3b/0x60\n   \u003c/IRQ\u003e\n   \u003cTASK\u003e\n   __local_bh_enable_ip+0x61/0x70\n   __alloc_skb+0x732/0x890\n   ? _raw_spin_lock_irqsave+0x85/0xe0\n   ? __pfx___alloc_skb+0x10/0x10\n   ? _raw_read_unlock_irqrestore+0x16/0x50\n   rxe_init_packet+0x16b/0x4f0\n   prepare_ack_packet+0xb8/0x830\n   rxe_receiver+0x499/0x9980\n   ? __pfx_rxe_receiver+0x10/0x10\n   ? rxe_completer+0x29e5/0x38c0\n   ? hrtimer_start_range_ns_common+0x75f/0x1730\n   ? hrtimer_start_range_ns+0xa6/0x2c0\n   ? __pfx__raw_spin_lock_irqsave+0x10/0x10\n   ? __pfx_rxe_receiver+0x10/0x10\n   do_work+0x144/0x470\n   process_one_work+0x633/0x1030\n   ? assign_work+0x11d/0x370\n   worker_thread+0x45b/0xd10\n   ? __pfx_worker_thread+0x10/0x10\n   kthread+0x2c6/0x3b0\n   ? recalc_sigpending+0x15c/0x1e0\n   ? __pfx_kthread+0x10/0x10\n   ret_from_fork+0x36e/0x5a0\n   ? __pfx_ret_from_fork+0x10/0x10\n   ? __switch_to+0x572/0xdd0\n   ? __pfx_kthread+0x10/0x10\n   ret_from_fork_asm+0x1a/0x30\n   \u003c/TASK\u003e\n  Modules linked in:\n  ---[ end trace 0000000000000000 ]---","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":"IB/iser: reject a remote invalidation of an unregistered direction","id":"CVE-2026-98358","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"RDMA/core: Reject unregistering netdevs in ib_get_eth_speed","id":"CVE-2026-98359"},"packages":[],"prev":{"headline":"IB/isert: wait for deferred control PDU completions before releasing the connection","id":"CVE-2026-98357"},"products":["Linux"],"published":"2026-10-06","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A remote attacker can cause a kernel crash in the Linux IB/iser driver by sending a specific invalidation command for an unregistered direction.","url":"https://insights.sbomify.com/CVE-2026-98358/"}