CVE-2026-46053: linux kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved: net: rds: fix MR cleanup on copy error __rds_rdma_map() hands sg/pages ownership to the transport after get_mr() succeeds. If copying the generated cookie back to user space fails after that point, the error path must not free those resources again before dropping the MR reference. Remove the duplicate unpin/free from the put_user() failure branch so that MR teardown is handled only through the existing final cleanup path.
CVE-2026-46053CVSS 7.8Linux

CVE-2026-46053: linux kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved: net: rds: fix MR cleanup on copy error __rds_rdma_map() hands sg/pages ownership to the transport after get_mr() succeeds. If copying the generated cookie back to user space fails after that point, the error path must not free those resources again before dropping the MR reference. Remove the duplicate unpin/free from the put_user() failure branch so that MR teardown is handled only through the existing final cleanup path.

CVSS
7.8 HIGH
EPSS
2.93%
Aktywnie wykorzystywana
brak w KEV
Produkt
linux kernel

Co wiadomo

In the Linux kernel, the following vulnerability has been resolved: net: rds: fix MR cleanup on copy error __rds_rdma_map() hands sg/pages ownership to the transport after get_mr() succeeds. If copying the generated cookie back to user space fails after that point, the error path must not free those resources again before dropping the MR reference. Remove the duplicate unpin/free from the put_user() failure branch so that MR teardown is handled only through the existing final cleanup path.

Źródła

Alerty bezpieczeństwa

Dostawaj alerty CVE zanim staną się incydentem

Wysyłamy wybrane zagrożenia infrastrukturalne po polsku, z praktycznym komentarzem dla środowisk DataHouse.

  • DataHouse: administracja serwerów i bezpieczna chmura
  • Hostilla.pl: hosting i usługi pocztowe
  • SecDNS.pl: bezpłatna warstwa bezpieczeństwa DNS