CVE-2026-98921: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: ovl: fix UAF in ovl_do_mkdir() debug print ovl_do_mkdir() prints the input dentry with %pd after vfs_mkdir(). Since commit fe497f0759e0 ("VFS: change vfs_mkdir() to unlock on failure."), vfs_mkdir() calls end_creating() on the input dentry on failure and may replace it on success, so the post-call %pd can use-after-free the dentry when CONFIG_OVERLAY_FS_DEBUG is enabled. Print the dentry before the call and only the result afterward.

Засегнати продукти

• Linux Linux: fe497f0759e0efb949f9480911d00b6045c21f50 преди 719bd33ab359c539a68a278c15a97deb77565cdb; fe497f0759e0efb949f9480911d00b6045c21f50 преди ae146bc1abdeb4607abf2975b858c053024e8ac1
• Linux Linux: 6.19; преди 6.19; 7.2.9 до 7.2.*; 7.3 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-2026-98921
• https://nvd.nist.gov/vuln/detail/CVE-2026-98921
• https://git.kernel.org/stable/c/719bd33ab359c539a68a278c15a97deb77565cdb
• https://git.kernel.org/stable/c/ae146bc1abdeb4607abf2975b858c053024e8ac1