CVE-2023-53468

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

ubifs: Fix memory leak in alloc_wbufs()

kmemleak reported a sequence of memory leaks, and show them as following:

unreferenced object 0xffff8881575f8400 (size 1024):

comm "mount", pid 19625, jiffies 4297119604 (age 20.383s)

hex dump (first 32 bytes):

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

backtrace:

[<ffffffff8176cecd>] __kmalloc+0x4d/0x150

[<ffffffffa0406b2b>] ubifs_mount+0x307b/0x7170 [ubifs]

[<ffffffff819fa8fd>] legacy_get_tree+0xed/0x1d0

[<ffffffff81936f2d>] vfs_get_tree+0x7d/0x230

[<ffffffff819b2bd4>] path_mount+0xdd4/0x17b0

[<ffffffff819b37aa>] __x64_sys_mount+0x1fa/0x270

[<ffffffff83c14295>] do_syscall_64+0x35/0x80

[<ffffffff83e0006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

unreferenced object 0xffff8881798a6e00 (size 512):

comm "mount"

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References