CVE-2025-68295

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> smb: client: fix memory leak in cifs_construct_tcon()<br /> <br /> When having a multiuser mount with domain= specified and using<br /> cifscreds, cifs_set_cifscreds() will end up setting @ctx-&gt;domainname,<br /> so it needs to be freed before leaving cifs_construct_tcon().<br /> <br /> This fixes the following memory leak reported by kmemleak:<br /> <br /> mount.cifs //srv/share /mnt -o domain=ZELDA,multiuser,...<br /> su - testuser<br /> cifscreds add -d ZELDA -u testuser<br /> ...<br /> ls /mnt/1<br /> ...<br /> umount /mnt<br /> echo scan &gt; /sys/kernel/debug/kmemleak<br /> cat /sys/kernel/debug/kmemleak<br /> unreferenced object 0xffff8881203c3f08 (size 8):<br /> comm "ls", pid 5060, jiffies 4307222943<br /> hex dump (first 8 bytes):<br /> 5a 45 4c 44 41 00 cc cc ZELDA...<br /> backtrace (crc d109a8cf):<br /> __kmalloc_node_track_caller_noprof+0x572/0x710<br /> kstrdup+0x3a/0x70<br /> cifs_sb_tlink+0x1209/0x1770 [cifs]<br /> cifs_get_fattr+0xe1/0xf50 [cifs]<br /> cifs_get_inode_info+0xb5/0x240 [cifs]<br /> cifs_revalidate_dentry_attr+0x2d1/0x470 [cifs]<br /> cifs_getattr+0x28e/0x450 [cifs]<br /> vfs_getattr_nosec+0x126/0x180<br /> vfs_statx+0xf6/0x220<br /> do_statx+0xab/0x110<br /> __x64_sys_statx+0xd5/0x130<br /> do_syscall_64+0xbb/0x380<br /> entry_SYSCALL_64_after_hwframe+0x77/0x7f