{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-46795 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-46795 is a medium-severity vulnerability in Linux kernel, published on 18 Sep 2024. 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-2024-46795 and fix it if it is affected.\n\nWhat it is: CVE-2024-46795 is a medium-severity vulnerability in Linux kernel, published on 18 Sep 2024. 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-2024-46795 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-2024-46795/ (Markdown: https://insights.sbomify.com/CVE-2024-46795/index.md)","id":"CVE-2024-46795","markdown":"https://insights.sbomify.com/CVE-2024-46795/index.md","name":"CVE-2024-46795","record":{"aliases":["AZL-49383","BELL-CVE-2024-46795","DEBIAN-CVE-2024-46795","GHSA-m849-gvp2-qmmr","UBUNTU-CVE-2024-46795"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel SMB server","requires_auth":"low_privilege","summary":"A null pointer dereference in the Linux kernel's ksmbd module allows remote attackers to cause a system crash via crafted SMB session setup requests.","user_interaction":"not_required","vuln_class":"null_dereference"},"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-476","name":"NULL Pointer Dereference"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: unset the binding mark of a reused connection\n\nSteve French reported null pointer dereference error from sha256 lib.\ncifs.ko can send session setup requests on reused connection.\nIf reused connection is used for binding session, conn-\u003ebinding can\nstill remain true and generate_preauth_hash() will not set\nsess-\u003ePreauth_HashValue and it will be NULL.\nIt is used as a material to create an encryption key in\nksmbd_gen_smb311_encryptionkey. -\u003ePreauth_HashValue cause null pointer\ndereference error from crypto_shash_update().\n\nBUG: kernel NULL pointer dereference, address: 0000000000000000\n#PF: supervisor read access in kernel mode\n#PF: error_code(0x0000) - not-present page\nPGD 0 P4D 0\nOops: 0000 [#1] PREEMPT SMP PTI\nCPU: 8 PID: 429254 Comm: kworker/8:39\nHardware name: LENOVO 20MAS08500/20MAS08500, BIOS N2CET69W (1.52 )\nWorkqueue: ksmbd-io handle_ksmbd_work [ksmbd]\nRIP: 0010:lib_sha256_base_do_update.isra.0+0x11e/0x1d0 [sha256_ssse3]\n\u003cTASK\u003e\n? show_regs+0x6d/0x80\n? __die+0x24/0x80\n? page_fault_oops+0x99/0x1b0\n? do_user_addr_fault+0x2ee/0x6b0\n? exc_page_fault+0x83/0x1b0\n? asm_exc_page_fault+0x27/0x30\n? __pfx_sha256_transform_rorx+0x10/0x10 [sha256_ssse3]\n? lib_sha256_base_do_update.isra.0+0x11e/0x1d0 [sha256_ssse3]\n? __pfx_sha256_transform_rorx+0x10/0x10 [sha256_ssse3]\n? __pfx_sha256_transform_rorx+0x10/0x10 [sha256_ssse3]\n_sha256_update+0x77/0xa0 [sha256_ssse3]\nsha256_avx2_update+0x15/0x30 [sha256_ssse3]\ncrypto_shash_update+0x1e/0x40\nhmac_update+0x12/0x20\ncrypto_shash_update+0x1e/0x40\ngenerate_key+0x234/0x380 [ksmbd]\ngenerate_smb3encryptionkey+0x40/0x1c0 [ksmbd]\nksmbd_gen_smb311_encryptionkey+0x72/0xa0 [ksmbd]\nntlm_authenticate.isra.0+0x423/0x5d0 [ksmbd]\nsmb2_sess_setup+0x952/0xaa0 [ksmbd]\n__process_request+0xa3/0x1d0 [ksmbd]\n__handle_ksmbd_work+0x1c4/0x2f0 [ksmbd]\nhandle_ksmbd_work+0x2d/0xa0 [ksmbd]\nprocess_one_work+0x16c/0x350\nworker_thread+0x306/0x440\n? __pfx_worker_thread+0x10/0x10\nkthread+0xef/0x120\n? __pfx_kthread+0x10/0x10\nret_from_fork+0x44/0x70\n? __pfx_kthread+0x10/0x10\nret_from_fork_asm+0x1b/0x30\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":"ksmbd: unset the binding mark of a reused connection","id":"CVE-2024-46795","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2024"},"n_packages":0,"n_references":5,"next":{"headline":"smb: client: fix double put of @cfile in smb2_set_path_size()","id":"CVE-2024-46796"},"packages":[],"prev":{"headline":"x86/tdx: Fix data leak in mmio_read()","id":"CVE-2024-46794"},"products":["Linux"],"published":"2024-09-18","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":"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":"2026-05-11","vendors":["Linux"]},"summary":"A null pointer dereference in the Linux kernel's ksmbd module allows remote attackers to cause a system crash via crafted SMB session setup requests.","url":"https://insights.sbomify.com/CVE-2024-46795/"}