{"uuid": "c8f078f2-c543-404a-a56d-20ea1c25d2eb", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2024-49987", "type": "seen", "source": "https://t.me/cvedetector/8509", "content": "{\n  \"Source\": \"CVE FEED\",\n  \"Title\": \"CVE-2024-49987 - Linux Kernel bpftool Null Pointer Voor tratamiento\", \n  \"Content\": \"CVE ID : CVE-2024-49987 \nPublished : Oct. 21, 2024, 6:15 p.m. | 44\u00a0minutes ago \nDescription : 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. \nSeverity: 0.0 | NA \nVisit the link for more details, such as CVSS details, affected products, timeline, and more...\",\n  \"Detection Date\": \"21 Oct 2024\",\n  \"Type\": \"Vulnerability\"\n}\n\ud83d\udd39 t.me/cvedetector \ud83d\udd39", "creation_timestamp": "2024-10-21T21:01:55.000000Z"}