{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-43112 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-43112 is a high-severity memory corruption vulnerability in Linux kernel, published on 6 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-43112 and fix it if it is affected.\n\nWhat it is: CVE-2026-43112 is a high-severity memory corruption vulnerability in Linux kernel, published on 6 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-43112 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-2026-43112/ (Markdown: https://insights.sbomify.com/CVE-2026-43112/index.md)","id":"CVE-2026-43112","markdown":"https://insights.sbomify.com/CVE-2026-43112/index.md","name":"CVE-2026-43112","record":{"aliases":["ALSA-2026:36365","ALSA-2026:36366","BELL-CVE-2026-43112","DEBIAN-CVE-2026-43112","GHSA-24h4-22f3-65qc","RHSA-2026:36365","RHSA-2026:36366","RHSA-2026:62558","RHSA-2026:62637","RLSA-2026:36365","RLSA-2026:36366","ROOT-OS-DEBIAN-11-CVE-2026-43112","ROOT-OS-DEBIAN-12-CVE-2026-43112","ROOT-OS-UBUNTU-2204-CVE-2026-43112","ROOT-OS-UBUNTU-2404-CVE-2026-43112","UBUNTU-CVE-2026-43112"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel SMB client","requires_auth":"none","summary":"An out-of-bounds read in the Linux kernel SMB client allows attackers to cause a system crash via crafted path inputs.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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\nfs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath\n\nWhen cifs_sanitize_prepath is called with an empty string or a string\ncontaining only delimiters (e.g., \"/\"), the current logic attempts to\ncheck *(cursor2 - 1) before cursor2 has advanced. This results in an\nout-of-bounds read.\n\nThis patch adds an early exit check after stripping prepended\ndelimiters. If no path content remains, the function returns NULL.\n\nThe bug was identified via manual audit and verified using a\nstandalone test case compiled with AddressSanitizer, which\ntriggered a SEGV on affected inputs.","ecosystems":["AlmaLinux:8","Red Hat:enterprise_linux:8::baseos","Red Hat:enterprise_linux:8::crb","Red Hat:enterprise_linux:8::nfv","Red Hat:enterprise_linux:8::realtime","Red Hat:rhel_e4s:8.8::baseos","Rocky Linux:8"],"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":"fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath","id":"CVE-2026-43112","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"memory_corruption","year":"2026"},"n_packages":138,"n_references":7,"next":{"headline":"wifi: wl1251: validate packet IDs before indexing tx_frames","id":"CVE-2026-43113"},"packages":[{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/almalinux/bpftool","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/almalinux/kernel","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-abi-stablelists","purl":"pkg:rpm/almalinux/kernel-abi-stablelists","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-core","purl":"pkg:rpm/almalinux/kernel-core","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-cross-headers","purl":"pkg:rpm/almalinux/kernel-cross-headers","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug","purl":"pkg:rpm/almalinux/kernel-debug","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-core","purl":"pkg:rpm/almalinux/kernel-debug-core","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-devel","purl":"pkg:rpm/almalinux/kernel-debug-devel","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules","purl":"pkg:rpm/almalinux/kernel-debug-modules","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules-extra","purl":"pkg:rpm/almalinux/kernel-debug-modules-extra","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-devel","purl":"pkg:rpm/almalinux/kernel-devel","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-doc","purl":"pkg:rpm/almalinux/kernel-doc","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-headers","purl":"pkg:rpm/almalinux/kernel-headers","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-modules","purl":"pkg:rpm/almalinux/kernel-modules","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-modules-extra","purl":"pkg:rpm/almalinux/kernel-modules-extra","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.rt7.482.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt","purl":"pkg:rpm/almalinux/kernel-rt","source":"ALSA-2026:36365"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.rt7.482.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-core","purl":"pkg:rpm/almalinux/kernel-rt-core","source":"ALSA-2026:36365"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.rt7.482.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug","purl":"pkg:rpm/almalinux/kernel-rt-debug","source":"ALSA-2026:36365"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.rt7.482.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-core","purl":"pkg:rpm/almalinux/kernel-rt-debug-core","source":"ALSA-2026:36365"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.rt7.482.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-devel","purl":"pkg:rpm/almalinux/kernel-rt-debug-devel","source":"ALSA-2026:36365"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.rt7.482.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-modules","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules","source":"ALSA-2026:36365"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.rt7.482.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-modules-extra","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules-extra","source":"ALSA-2026:36365"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.rt7.482.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-devel","purl":"pkg:rpm/almalinux/kernel-rt-devel","source":"ALSA-2026:36365"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.rt7.482.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-modules","purl":"pkg:rpm/almalinux/kernel-rt-modules","source":"ALSA-2026:36365"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.rt7.482.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-modules-extra","purl":"pkg:rpm/almalinux/kernel-rt-modules-extra","source":"ALSA-2026:36365"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools","purl":"pkg:rpm/almalinux/kernel-tools","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-libs","purl":"pkg:rpm/almalinux/kernel-tools-libs","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-libs-devel","purl":"pkg:rpm/almalinux/kernel-tools-libs-devel","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump","purl":"pkg:rpm/almalinux/kernel-zfcpdump","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-core","purl":"pkg:rpm/almalinux/kernel-zfcpdump-core","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-devel","purl":"pkg:rpm/almalinux/kernel-zfcpdump-devel","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-modules","purl":"pkg:rpm/almalinux/kernel-zfcpdump-modules","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-modules-extra","purl":"pkg:rpm/almalinux/kernel-zfcpdump-modules-extra","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"perf","purl":"pkg:rpm/almalinux/perf","source":"ALSA-2026:36366"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3-perf","purl":"pkg:rpm/almalinux/python3-perf","source":"ALSA-2026:36366"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/redhat/bpftool","source":"RHSA-2026:36366"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"bpftool-debuginfo","purl":"pkg:rpm/redhat/bpftool-debuginfo","source":"RHSA-2026:36366"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/redhat/kernel","source":"RHSA-2026:36366"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-abi-stablelists","purl":"pkg:rpm/redhat/kernel-abi-stablelists","source":"RHSA-2026:36366"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:4.18.0-553.141.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-core","purl":"pkg:rpm/redhat/kernel-core","source":"RHSA-2026:36366"}],"prev":{"headline":"HID: roccat: fix use-after-free in roccat_report_event","id":"CVE-2026-43111"},"products":["Linux"],"published":"2026-05-06","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":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"An out-of-bounds read in the Linux kernel SMB client allows attackers to cause a system crash via crafted path inputs.","url":"https://insights.sbomify.com/CVE-2026-43112/"}