CVE-2022-50272

MEDIUM EPSS 4.6%
Published Sep 15, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 15, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer() Wei Chen reports a kernel bug as blew: general protection fault, probably for non-canonical address KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] ... Call Trace: <TASK> __i2c_transfer+0x77e/0x1930 drivers/i2c/i2c-core-base.c:2109 i2c_transfer+0x1d5/0x3d0 drivers/i2c/i2c-core-base.c:2170 i2cdev_ioctl_rdwr+0x393/0x660 drivers/i2c/i2c-dev.c:297 i2cdev_ioctl+0x75d/0x9f0 drivers/i2c/i2c-dev.c:458 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd834a8bded In az6027_i2c_xfer(), if msg[i].addr is 0x99, a null-ptr-deref will caused when accessing msg[i].buf. For msg[i].len is 0 and msg[i].buf is null. Fix this by checking msg[i].len in az6027_i2c_xfer().

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
4.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥2.6.34  –  <4.9.337
linuxlinux_kernel*≥4.10  –  <4.14.303
linuxlinux_kernel*≥4.15  –  <4.19.270
linuxlinux_kernel*≥4.20  –  <5.4.229
linuxlinux_kernel*≥5.5  –  <5.10.163
linuxlinux_kernel*≥5.11  –  <5.15.86
linuxlinux_kernel*≥5.16  –  <6.0.16
linuxlinux_kernel*≥6.1  –  <6.1.2

References 9

  • git.kernel.org https://git.kernel.org/stable/c/0ed554fd769a19ea8464bb83e9ac201002ef74ad
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/210fcf64be4db82c0e190e74b5111e4eef661a7a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2b6a8a1a32746981044e7ab06649c804acb4068a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/559891d430e3f3a178040c4371ed419edbfa7d65
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b60cf73a931af34b7a0a3f467a79d9fe0df2d70
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6fbc44731a4665cbe92a5090e9804a388a72214b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7abfe467cd685f5da7ecb415441e45e3e4e2baa8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8b256d23361c51aa4b7fdb71176c1ca50966fb39
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c712d1ccbfb787620422b437a5b8fac0802547bd
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0ed554fd769a19ea8464bb83e9ac201002ef74ad
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/210fcf64be4db82c0e190e74b5111e4eef661a7a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2b6a8a1a32746981044e7ab06649c804acb4068a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/559891d430e3f3a178040c4371ed419edbfa7d65
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6b60cf73a931af34b7a0a3f467a79d9fe0df2d70
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6fbc44731a4665cbe92a5090e9804a388a72214b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7abfe467cd685f5da7ecb415441e45e3e4e2baa8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8b256d23361c51aa4b7fdb71176c1ca50966fb39
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c712d1ccbfb787620422b437a5b8fac0802547bd
    Patch