cve-2024-38574
Vulnerability from cvelistv5
Published
2024-06-19 13:35
Modified
2024-09-11 17:34
Severity
Summary
libbpf: Prevent null-pointer dereference when prog to load has no BTF
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1fd91360a75833b7110af9834ae26c977e1273e0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9bf48fa19a4b1d186e08b20bf7e5de26a15644fb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef80b59acfa4dee4b5eaccb15572b69248831104
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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    "datePublished": "2024-06-19T13:35:39.015Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-38574\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-19T14:15:17.520\",\"lastModified\":\"2024-06-20T12:44:01.637\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nlibbpf: Prevent null-pointer dereference when prog to load has no BTF\\n\\nIn bpf_objec_load_prog(), there\u0027s no guarantee that obj-\u003ebtf is non-NULL\\nwhen passing it to btf__fd(), and this function does not perform any\\ncheck before dereferencing its argument (as bpf_object__btf_fd() used to\\ndo). As a consequence, we get segmentation fault errors in bpftool (for\\nexample) when trying to load programs that come without BTF information.\\n\\nv2: Keep btf__fd() in the fix instead of reverting to bpf_object__btf_fd().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: libbpf: evita la desreferencia del puntero nulo cuando el programa a cargar no tiene BTF. En bpf_objec_load_prog(), no hay garant\u00eda de que obj-\u0026gt;btf no sea NULL al pasarlo a btf__fd() , y esta funci\u00f3n no realiza ninguna verificaci\u00f3n antes de eliminar la referencia a su argumento (como sol\u00eda hacer bpf_object__btf_fd()). Como consecuencia, obtenemos errores de segmentaci\u00f3n en bpftool (por ejemplo) cuando intentamos cargar programas que vienen sin informaci\u00f3n BTF. v2: Mantenga btf__fd() en la soluci\u00f3n en lugar de volver a bpf_object__btf_fd().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1fd91360a75833b7110af9834ae26c977e1273e0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9bf48fa19a4b1d186e08b20bf7e5de26a15644fb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ef80b59acfa4dee4b5eaccb15572b69248831104\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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