CVE-2022-49762

MEDIUM EPSS 7.4%
Published May 1, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 1, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ntfs: check overflow when iterating ATTR_RECORDs Kernel iterates over ATTR_RECORDs in mft record in ntfs_attr_find(). Because the ATTR_RECORDs are next to each other, kernel can get the next ATTR_RECORD from end address of current ATTR_RECORD, through current ATTR_RECORD length field. The problem is that during iteration, when kernel calculates the end address of current ATTR_RECORD, kernel may trigger an integer overflow bug in executing `a = (ATTR_RECORD*)((u8*)a + le32_to_cpu(a->length))`. This may wrap, leading to a forever iteration on 32bit systems. This patch solves it by adding some checks on calculating end address of current ATTR_RECORD during iteration.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
7.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel* <4.9.334
linuxlinux_kernel*≥4.10  –  <4.14.300
linuxlinux_kernel*≥4.15  –  <4.19.267
linuxlinux_kernel*≥4.20  –  <5.4.225
linuxlinux_kernel*≥5.5  –  <5.10.156
linuxlinux_kernel*≥5.11  –  <5.15.80
linuxlinux_kernel*≥5.16  –  <6.0.10

References 8

  • git.kernel.org https://git.kernel.org/stable/c/45683723f6b53e39e8a4cec0894e61fd6ec71989
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5559eb5809353a83a40a1e4e7f066431c7b83020
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/63095f4f3af59322bea984a6ae44337439348fe0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/785b2af9654b8beac55644e36da0085c5d776361
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/86f36de14dce5802856bb7a5921d74439db00b64
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/957732a09c3828267c2819d31c425aa793dd475b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b612f924f296408d7d02fb4cd01218afd4ed7184
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b63ddb3ba61e2d3539f87e095c881e552bc45dab
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/45683723f6b53e39e8a4cec0894e61fd6ec71989
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5559eb5809353a83a40a1e4e7f066431c7b83020
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/63095f4f3af59322bea984a6ae44337439348fe0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/785b2af9654b8beac55644e36da0085c5d776361
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/86f36de14dce5802856bb7a5921d74439db00b64
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/957732a09c3828267c2819d31c425aa793dd475b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b612f924f296408d7d02fb4cd01218afd4ed7184
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b63ddb3ba61e2d3539f87e095c881e552bc45dab
    Patch