CVE-2026-64062: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix potential deadlock in write-through mode Fix netfs_advance_writethrough() to always unlock the supplied folio and to mark it dirty if it isn't yet written to the end. Unfortunately, it can't be marked for writeback until the folio is done with as that may cause a deadlock against mmapped reads and writes. Even though it has been marked dirty, premature writeback can't occur as the caller is holding both inode->i_rwsem (which will prevent concurrent truncation, fallocation, DIO and other writes) and ictx->wb_lock (which will cause flushing to wait and writeback to skip or wait). Note that this may be easier to deal with once the queuing of folios is split from the generation of subrequests.

Засегнати продукти

• Linux Linux: 288ace2f57c9d06dd2e42bd80d03747d879a4068 преди 1468f39243ccb155b6d97f9a9932f610d1205d75; 288ace2f57c9d06dd2e42bd80d03747d879a4068 преди 003aa0dd26c964025acd6d1213bcdbd674db2ca9; 288ace2f57c9d06dd2e42bd80d03747d879a4068 преди e40e9cbf3ee4d30ee9a97bd128c85500b6ad0da1; 288ace2f57c9d06dd2e42bd80d03747d879a4068 преди b6a4ae1634b3ad2aaa05222e53d36da532852faf
• Linux Linux: 6.10; преди 6.10; 6.12.92 до 6.12.*; 6.18.34 до 6.18.*; 7.0.11 до 7.0.*; 7.1 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-64062
• https://nvd.nist.gov/vuln/detail/CVE-2026-64062
• https://git.kernel.org/stable/c/1468f39243ccb155b6d97f9a9932f610d1205d75
• https://git.kernel.org/stable/c/003aa0dd26c964025acd6d1213bcdbd674db2ca9
• https://git.kernel.org/stable/c/e40e9cbf3ee4d30ee9a97bd128c85500b6ad0da1
• https://git.kernel.org/stable/c/b6a4ae1634b3ad2aaa05222e53d36da532852faf