CVE Watch15 jul 2026

CVE-2026-43494

In the Linux kernel, the following vulnerability has been resolved: net/rds: reset op_nents when zerocopy page pin fails When iov_iter_get

CVSS

7.8

Alto

EPSS

0.3%

p19

KEV

—

Exploit Today

0-100

Publicado: 21 may 2026 · Última mod.: 15 jul 2026 · CWE-1341

EPSS · 30d

0.3%EPSS · 30 días0.3%

2026-06-302026-07-16

Descripción técnica

In the Linux kernel, the following vulnerability has been resolved: net/rds: reset op_nents when zerocopy page pin fails When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(), the pinned pages are released with put_page(), and rm->data.op_mmp_znotifier is cleared. But we fail to properly clear rm->data.op_nents. Later when rds_message_purge() is called from rds_sendmsg() the cleanup loop iterates over the incorrectly non zero number of op_nents and frees them again. Fix this by properly resetting op_nents when it should be in rds_message_zcopy_from_user().

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