CVE-2026-74542: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix folio_queue ENOMEM in writeback by adding a mempool Fix the handling of folio_queue allocation failure in writeback by adding a mempool and passing in gfp_t flags to the rolling buffer functions that allocate memory, using the mempool if gfp != GFP_KERNEL. This is then extended upwards and the gfp to be used for a request is stored in the netfs_io_request struct and is then used for both requests and subrequests, eliminating the sleeping loops there. The failure caused: folio != NULL WARNING: fs/netfs/write_issue.c:603 at netfs_writepages+0x883/0xa10 fs/netfs/write_issue.c:603, CPU#3: syz.0.17/5919

Засегнати продукти

• Linux Linux: cd0277ed0c188dd40e7744e89299af7b78831ca4 преди b343252d6f536203dd0660f676190dcbf6d2ecdc; cd0277ed0c188dd40e7744e89299af7b78831ca4 преди 15ed8a9b7c63e9171f5139a6aaa1ffb61809861f; cd0277ed0c188dd40e7744e89299af7b78831ca4 преди 3f6d7f8a5416d852648d15a05e895f1195ee8a85; cd0277ed0c188dd40e7744e89299af7b78831ca4 преди 1d78d56c43ef3768183e8370e7367b162700e049
• Linux Linux: 6.12; преди 6.12; 6.12.114 до 6.12.*; 6.18.57 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-74542
• https://nvd.nist.gov/vuln/detail/CVE-2026-74542
• https://git.kernel.org/stable/c/b343252d6f536203dd0660f676190dcbf6d2ecdc
• https://git.kernel.org/stable/c/15ed8a9b7c63e9171f5139a6aaa1ffb61809861f
• https://git.kernel.org/stable/c/3f6d7f8a5416d852648d15a05e895f1195ee8a85
• https://git.kernel.org/stable/c/1d78d56c43ef3768183e8370e7367b162700e049