CVE-2023-53652
HighSummary
W jądrze systemu Linux zidentyfikowano podatność związaną z walidacją atrybutów w strukturze vdpa_nl_policy. Brak odpowiedniej kontroli długości atrybutu mógł prowadzić do nielegalnych wskaźników nlattr, co z kolei mogło skutkować odczytem poza granicami pamięci (OOB).
Risk Assessment
Podatność ta może prowadzić do poważnych problemów z bezpieczeństwem, w tym do potencjalnego wycieku danych lub awarii systemu. Organizacje powinny być świadome ryzyka związanego z nieautoryzowanym dostępem do pamięci.
Recommendation
Zaleca się aktualizację jądra systemu Linux do najnowszej wersji, aby załatać tę podatność i zminimalizować ryzyko związane z nieautoryzowanym dostępem do pamięci.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: vdpa: Add features attr to vdpa_nl_policy for nlattr length check The vdpa_nl_policy structure is used to validate the nlattr when parsing the incoming nlmsg. It will ensure the attribute being described produces a valid nlattr pointer in info->attrs before entering into each handler in vdpa_nl_ops. That is to say, the missing part in vdpa_nl_policy may lead to illegal nlattr after parsing, which could lead to OOB read just like CVE-2023-3773. This patch adds the missing nla_policy for vdpa features attr to avoid such bugs.

