CVE-2025-21832

MEDIUM EPSS 6.2%
Published Mar 6, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Mar 6, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: block: don't revert iter for -EIOCBQUEUED blkdev_read_iter() has a few odd checks, like gating the position and count adjustment on whether or not the result is bigger-than-or-equal to zero (where bigger than makes more sense), and not checking the return value of blkdev_direct_IO() before doing an iov_iter_revert(). The latter can lead to attempting to revert with a negative value, which when passed to iov_iter_revert() as an unsigned value will lead to throwing a WARN_ON() because unroll is bigger than MAX_RW_COUNT. Be sane and don't revert for -EIOCBQUEUED, like what is done in other spots.

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
6.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 11

VendorProductVersionRange
linuxlinux_kernel*≥5.17.1  –  <6.1.129
linuxlinux_kernel*≥6.2  –  <6.6.78
linuxlinux_kernel*≥6.7  –  <6.12.14
linuxlinux_kernel*≥6.13  –  <6.13.3
linuxlinux_kernel5.17any
linuxlinux_kernel5.17any
linuxlinux_kernel5.17any
linuxlinux_kernel5.17any
linuxlinux_kernel5.17any
linuxlinux_kernel5.17any
linuxlinux_kernel5.17any

References 6

  • git.kernel.org https://git.kernel.org/stable/c/68f16d3034a06661245ecd22f0d586a8b4e7c473
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/84671b0630ccb46ae9f1f99a45c7d63ffcd6a474
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a58f136bad29f9ae721a29d98c042fddbee22f77
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b13ee668e8280ca5b07f8ce2846b9957a8a10853
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/68f16d3034a06661245ecd22f0d586a8b4e7c473
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6c26619effb1b4cb7d20b4e666ab8f71f6a53ccb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/84671b0630ccb46ae9f1f99a45c7d63ffcd6a474
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a58f136bad29f9ae721a29d98c042fddbee22f77
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b13ee668e8280ca5b07f8ce2846b9957a8a10853
    Patch