CVE-2025-21988

mediumpriority · track · 22EPSS 0.004 · 32 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.39% (32nd) EPSS

CVSS 5.5 · medium

Is it mine?

25 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-23

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

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5.1–9.8

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.15.5mediumAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-99US

affected products (25)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Dell Secure Connect Gateway Appliance <5.32.00.18all versionscert_bundDE
Google Container-Optimized OSall versionscert_bundDEcpe:/o:google:container-optimized_os:-
Open Source Linux Kernelall versionscert_bundDEcpe:/o:linux:linux_kernel:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat Enterprise Linux 9.2all versionscert_bundDEcpe:/o:redhat:enterprise_linux:9.2
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Siemens SIMATIC S7 1500 CPUall versionscert_bundDEcpe:/h:siemens:simatic_s7:1500_cpu
SolarWinds Security Event Manager <2025.2.1all versionscert_bundDE
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Dell Secure Connect Gateway≤ Appliance <5.32.00.18cert_bundDE
SolarWinds Security Event Manager< 2025.2.1cert_bundDE
Linux Linuxall versionsenisa_euvdEU
Linux Linux≤ 6.12enisa_euvdEU
Linux Linux< 6.12.20enisa_euvdEU
Linux Linux< 6.13.8enisa_euvdEU
Linux Linux< 6.14enisa_euvdEU
Linux Linuxee4cdf7ba857… → 62b9ad7e52d4…enisa_euvdEU

showing 20 of 25

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-0698Linux Kernel: Mehrere SchwachstellenDeutsch2025-04-02csaf · cert_bundDE
Ein entfernter anonymer Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um einen 'Denial of Service'-Zustand zu erzeugen oder andere nicht spezifizierte Angriffe durchzuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2025-04-02modified 2026-07-30

references (9)

External citations — patches, advisories, analysis.

scry

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