CVE-2025-21988

MEDIUM EPSS 5.8%
Published Apr 2, 20251y ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 2, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: fs/netfs/read_collect: add to next->prev_donated If multiple subrequests donate data to the same "next" request (depending on the subrequest completion order), each of them would overwrite the `prev_donated` field, causing data corruption and a BUG() crash ("Can't donate prior to front").

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
5.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 2

VendorProductVersionRange
linuxlinux_kernel*≥6.12  –  <6.12.20
linuxlinux_kernel*≥6.13  –  <6.13.8

References 3

  • git.kernel.org https://git.kernel.org/stable/c/62b9ad7e52d4777f7e775ee1f0ad2452f6041024
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e25cec3b76aba47a49138d2162fc809c6cd49c9e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e2d46f2ec332533816417b60933954173f602121
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/62b9ad7e52d4777f7e775ee1f0ad2452f6041024
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e25cec3b76aba47a49138d2162fc809c6cd49c9e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e2d46f2ec332533816417b60933954173f602121
    Patch