Описание
A vulnerability was found in Linux Kernel. It has been classified as problematic. This affects the function find_prog_by_sec_insn of the file tools/lib/bpf/libbpf.c of the component BPF. The manipulation leads to null pointer dereference. It is recommended to apply a patch to fix this issue. The identifier VDB-211749 was assigned to this vulnerability.
A flaw was found in libbpf. When there are no program sections, obj->programs is left unallocated, causing a NULL pointer dereference in the following access to prog->sec_idx in find_prog_by_sec_insn. A local user could use this flaw to cause a denial of service.
Отчет
Red Hat Enterprise Linux 6 and 7 are not affected by this issue as they did not include CO-RE relocations support for multi-prog sections (upstream commit db2b8b0)
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel | Will not fix | ||
| Red Hat Enterprise Linux 8 | kernel-rt | Will not fix | ||
| Red Hat Enterprise Linux 8 | libbpf | Will not fix | ||
| Red Hat Enterprise Linux 9 | kernel | Will not fix | ||
| Red Hat Enterprise Linux 9 | kernel-rt | Will not fix | ||
| Red Hat Enterprise Linux 9 | libbpf | Will not fix |
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Дополнительная информация
Статус:
EPSS
4.4 Medium
CVSS3
Связанные уязвимости
A vulnerability was found in Linux Kernel. It has been classified as problematic. This affects the function find_prog_by_sec_insn of the file tools/lib/bpf/libbpf.c of the component BPF. The manipulation leads to null pointer dereference. It is recommended to apply a patch to fix this issue. The identifier VDB-211749 was assigned to this vulnerability.
A vulnerability was found in Linux Kernel. It has been classified as problematic. This affects the function find_prog_by_sec_insn of the file tools/lib/bpf/libbpf.c of the component BPF. The manipulation leads to null pointer dereference. It is recommended to apply a patch to fix this issue. The identifier VDB-211749 was assigned to this vulnerability.
A vulnerability was found in Linux Kernel. It has been classified as p ...
A vulnerability was found in Linux Kernel. It has been classified as problematic. This affects the function find_prog_by_sec_insn of the file tools/lib/bpf/libbpf.c of the component BPF. The manipulation leads to null pointer dereference. It is recommended to apply a patch to fix this issue. The identifier VDB-211749 was assigned to this vulnerability.
Уязвимость функции find_prog_by_sec_insn() (tools/lib/bpf/libbpf.c) ядра операционных систем Linux, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
4.4 Medium
CVSS3