CVE-2022-21546

HIGH EPSS 7.3%
Published May 2, 20251y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published May 2, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: target: Fix WRITE_SAME No Data Buffer crash In newer version of the SBC specs, we have a NDOB bit that indicates there is no data buffer that gets written out. If this bit is set using commands like "sg_write_same --ndob" we will crash in target_core_iblock/file's execute_write_same handlers when we go to access the se_cmd->t_data_sg because its NULL. This patch adds a check for the NDOB bit in the common WRITE SAME code because we don't support it. And, it adds a check for zero SG elements in each handler in case the initiator tries to send a normal WRITE SAME with no data buffer.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
7.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel* <5.4.294
linuxlinux_kernel*≥5.5  –  <5.10.238
linuxlinux_kernel*≥5.11  –  <5.15.182
linuxlinux_kernel*≥5.16  –  <5.19
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
debiandebian_linux11.0any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/4226622647e3e5ac06d3ebc1605b917446157510
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/54e57be2573cf0b8bf650375fd8752987b6c3d3b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ccd3f449052449a917a3e577d8ba0368f43b8f29
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d8e6a27e9238dd294d6f2f401655f300dca20899
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    Mailing List

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/4226622647e3e5ac06d3ebc1605b917446157510
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/54e57be2573cf0b8bf650375fd8752987b6c3d3b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ccd3f449052449a917a3e577d8ba0368f43b8f29
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d8e6a27e9238dd294d6f2f401655f300dca20899
    Patch