{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-49987 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-49987 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 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-2024-49987 and fix it if it is affected.\n\nWhat it is: CVE-2024-49987 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 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-2024-49987 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-2024-49987/ (Markdown: https://insights.sbomify.com/CVE-2024-49987/index.md)","id":"CVE-2024-49987","markdown":"https://insights.sbomify.com/CVE-2024-49987/index.md","name":"CVE-2024-49987","record":{"aliases":["AZL-51768","BELL-CVE-2024-49987","DEBIAN-CVE-2024-49987","GHSA-qf5q-fm5c-hc2p","ROOT-OS-DEBIAN-12-CVE-2024-49987","ROOT-OS-UBUNTU-2204-CVE-2024-49987","SUSE-SU-2024:4157-1","UBUNTU-CVE-2024-49987"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel tool","requires_auth":"low_privilege","summary":"A null pointer dereference in bpftool when displaying empty netfilter entries can cause a crash, requiring a kernel patch.","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\nbpftool: Fix undefined behavior in qsort(NULL, 0, ...)\n\nWhen netfilter has no entry to display, qsort is called with\nqsort(NULL, 0, ...). This results in undefined behavior, as UBSan\nreports:\n\nnet.c:827:2: runtime error: null pointer passed as argument 1, which is declared to never be null\n\nAlthough the C standard does not explicitly state whether calling qsort\nwith a NULL pointer when the size is 0 constitutes undefined behavior,\nSection 7.1.4 of the C standard (Use of library functions) mentions:\n\n\"Each of the following statements applies unless explicitly stated\notherwise in the detailed descriptions that follow: If an argument to a\nfunction has an invalid value (such as a value outside the domain of\nthe function, or a pointer outside the address space of the program, or\na null pointer, or a pointer to non-modifiable storage when the\ncorresponding parameter is not const-qualified) or a type (after\npromotion) not expected by a function with variable number of\narguments, the behavior is undefined.\"\n\nTo avoid this, add an early return when nf_link_info is NULL to prevent\ncalling qsort with a NULL pointer.","ecosystems":["SUSE:Linux Enterprise Module for Basesystem 15 SP6","openSUSE:Leap 15.6"],"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":"bpftool: Fix undefined behavior in qsort(NULL, 0, ...)","id":"CVE-2024-49987","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2024"},"n_packages":2,"n_references":4,"next":{"headline":"ksmbd: add refcnt to ksmbd_conn struct","id":"CVE-2024-49988"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP6","fixed":["6.4.0-150600.19.6.1"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/suse/bpftool\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6","source":"SUSE-SU-2024:4157-1"},{"ecosystem":"openSUSE:Leap 15.6","fixed":["6.4.0-150600.19.6.1"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/opensuse/bpftool\u0026distro=openSUSE%20Leap%2015.6","source":"SUSE-SU-2024:4157-1"}],"prev":{"headline":"platform/x86: x86-android-tablets: Fix use after free on platform_device_register() errors","id":"CVE-2024-49986"},"products":["Linux"],"published":"2024-10-21","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":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"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 bpftool when displaying empty netfilter entries can cause a crash, requiring a kernel patch.","url":"https://insights.sbomify.com/CVE-2024-49987/"}