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🛡️ CVE-2022-50507 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

fs/ntfs3: Validate data run offset

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+0x51/0x60

[ 82.947483] run_unpack+0x2e3/0x570

[ 82.947709] ? memcpy+0x4e/0x70

[ 82.947927] ? run_pack+0x7a0/0x7a0

[ 82.948158] run_unpack_ex+0xad/0x3f0

[ 82.948399] ? mi_enum_attr+0x14a/0x200

[ 82.948717] ? run_unpack+0x570/0x570

[ 82.949072] ? ni_enum_attr_ex+0x1b2/0x1c0

[ 82.949332] ? ni_fname_type.part.0+0xd0/0xd0

[ 82.949611] ? mi_read+0x262/0x2c0

[ 82.949970] ? ntfs_cmp_names_cpu+0x125/0x180

[ 82.950249] ntfs_iget5+0x632/0x1870

[ 82.950621] ? ntfs_get_block_bmap+0x70/0x70

[ 82.951192] ? evict+0x223/0x280

[ 82.951525] ? iput.part.0+0x286/0x320

[ 82.951969] ntfs_fill_super+0x1321/0x1e20

[ 82.952436] ? put_ntfs+0x1d0/0x1d0

[ 82.952822] ? vsprintf+0x20/0x20

[ 82.953188] ? mutex_unlock+0x81/0xd0

[ 82.953379] ? set_blocksize+0x95/0x150

[ 82.954001] get_tree_bdev+0x232/0x370

[ 82.954438] ? put_ntfs+0x1d0/0x1d0

[ 82.954700] ntfs_fs_get_tree+0x15/0x20

[ 82.955049] vfs_get_tree+0x4c/0x130

[ 82.955292] path_mount+0x645/0xfd0

[ 82.955615] ? putname+0x80/0xa0

[ 82.955955] ? finish_automount+0x2e0/0x2e0

[ 82.956310] ? kmem_cache_free+0x110/0x390

[ 82.956723] ? putname+0x80/0xa0

[ 82.957023] do_mount+0xd6/0xf0

[ 82.957411] ? path_mount+0xfd0/0xfd0

[ 82.957638] ? __kasan_check_write+0x14/0x20

[ 82.957948] __x64_sys_mount+0xca/0x110

[ 82.958310] do_syscall_64+0x3b/0x90

[ 82.958719] entry_SYSCALL_64_after_hwframe+0x63/0xcd

[ 82.959341] RIP: 0033:0x7fd0d1ce948a

[ 82.960193] Code: 48 8b 0d 11 fa 2a 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 008

[ 82.961532] RSP: 002b:00007ffe59ff69a8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5

[ 82.962527] RAX: ffffffffffffffda RBX: 0000564dcc107060 RCX: 00007fd0d1ce948a

[ 82.963266] RDX: 0000564dcc107260 RSI: 0000564dcc1072e0 RDI: 0000564dcc10fce0

[ 82.963686] RBP: 0000000000000000 R08: 0000564dcc107280 R09: 0000000000000020

[ 82.964272] R10: 00000000c0ed0000 R11: 0000000000000202 R12: 0000564dcc10fce0

[ 82.964785] R13: 0000564dcc107260 R14: 0000000000000000 R15: 00000000ffffffff

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

CVE-2022-50507 is recorded against 2 packages.

  • kernel (from 6.1.0 up to 6.1.3)
  • linux-kernel (from 6.1 up to 6.1.3)

Timeline and source

Published on 4 October 2025 and last revised on 17 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2022-50507 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-10-04
Updated 2026-08-20
Modified 2026-08-17

Affected Packages

Software From version Fixed in
kernel 6.1.0 6.1.3
linux-kernel 6.1 6.1.3

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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