CVE-2022-50507

/// Technical description

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

fs/ntfs3: Validate data run offset

This adds sanity checks for data run offset. We should make sure data

run offset is legit before trying to unpack them, otherwise we may

encounter use-after-free or some unexpected memory access behaviors.

[ 82.940342] BUG: KASAN: use-after-free in run_unpack+0x2e3/0x570

[ 82.941180] Read of size 1 at addr ffff888008a8487f by task mount/240

[ 82.941670]

[ 82.942069] CPU: 0 PID: 240 Comm: mount Not tainted 5.19.0+ #15

[ 82.942482] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014

[ 82.943720] Call Trace:

[ 82.944204] <TASK>

[ 82.944471] dump_stack_lvl+0x49/0x63

[ 82.944908] print_report.cold+0xf5/0x67b

[ 82.945141] ? __wait_on_bit+0x106/0x120

[ 82.945750] ? run_unpack+0x2e3/0x570

[ 82.946626] kasan_report+0xa7/0x120

[ 82.947046] ? run_unpack+0x2e3/0x570

[ 82.947280] __asan_load1+0x5

/// 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