CVE-2025-21728

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-21728
In the Linux kernel, the following vulnerability has been resolved: bpf: Send signals asynchronously if !preemptible BPF programs can execute in all kinds of contexts and when a program running in a non-preemptible context uses the bpf_send_signal() kfunc, it will cause issues because this kfunc can sleep. Change `irqs_disabled()` to `!preemptible()`.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/092fc76b7ab4163e008f9cde596a58dad2108260 Patch
https://git.kernel.org/stable/c/78b97783496b454435639937db3303e900a24d3f Patch
https://git.kernel.org/stable/c/87c544108b612512b254c8f79aa5c0a8546e2cc4 Patch
https://git.kernel.org/stable/c/be42a09fe898635b0093c0c8dac1bfabe225c240 Patch
https://git.kernel.org/stable/c/ce51eab2070e295d298f42a2f1db269cd1b56d55 Patch
https://git.kernel.org/stable/c/e306eaaa3d78b462db5f5b11e0171f9d2b6ca3f4 Patch
https://git.kernel.org/stable/c/eeef8e65041a031bd8a747a392c14b76a123a12c Patch
https://git.kernel.org/stable/c/feba1308bc5e8e04cee751d39fae8a9b407a9034 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.6:-:*:*:*:*:*:*
History

23 Oct 2025, 13:05

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/092fc76b7ab4163e008f9cde596a58dad2108260 - () https://git.kernel.org/stable/c/092fc76b7ab4163e008f9cde596a58dad2108260 - Patch
References () https://git.kernel.org/stable/c/78b97783496b454435639937db3303e900a24d3f - () https://git.kernel.org/stable/c/78b97783496b454435639937db3303e900a24d3f - Patch
References () https://git.kernel.org/stable/c/87c544108b612512b254c8f79aa5c0a8546e2cc4 - () https://git.kernel.org/stable/c/87c544108b612512b254c8f79aa5c0a8546e2cc4 - Patch
References () https://git.kernel.org/stable/c/be42a09fe898635b0093c0c8dac1bfabe225c240 - () https://git.kernel.org/stable/c/be42a09fe898635b0093c0c8dac1bfabe225c240 - Patch
References () https://git.kernel.org/stable/c/ce51eab2070e295d298f42a2f1db269cd1b56d55 - () https://git.kernel.org/stable/c/ce51eab2070e295d298f42a2f1db269cd1b56d55 - Patch
References () https://git.kernel.org/stable/c/e306eaaa3d78b462db5f5b11e0171f9d2b6ca3f4 - () https://git.kernel.org/stable/c/e306eaaa3d78b462db5f5b11e0171f9d2b6ca3f4 - Patch
References () https://git.kernel.org/stable/c/eeef8e65041a031bd8a747a392c14b76a123a12c - () https://git.kernel.org/stable/c/eeef8e65041a031bd8a747a392c14b76a123a12c - Patch
References () https://git.kernel.org/stable/c/feba1308bc5e8e04cee751d39fae8a9b407a9034 - () https://git.kernel.org/stable/c/feba1308bc5e8e04cee751d39fae8a9b407a9034 - Patch
CPE cpe:2.3:o:linux:linux_kernel:5.6:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE NVD-CWE-noinfo
First Time Linux
Linux linux Kernel

13 Mar 2025, 13:15

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/ce51eab2070e295d298f42a2f1db269cd1b56d55 -
  • () https://git.kernel.org/stable/c/e306eaaa3d78b462db5f5b11e0171f9d2b6ca3f4 -
  • () https://git.kernel.org/stable/c/feba1308bc5e8e04cee751d39fae8a9b407a9034 -
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Envía señales de forma asincrónica si los programas BPF !preemptible pueden ejecutarse en todo tipo de contextos y cuando un programa que se ejecuta en un contexto no preemptible utiliza la función kfunc bpf_send_signal(), causará problemas porque esta función kfunc puede suspenderse. Cambie `irqs_disabled()` a `!preemptible()`.

27 Feb 2025, 02:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-27 02:15

Updated : 2025-10-23 13:05

NVD link : CVE-2025-21728

Mitre link : CVE-2025-21728

CVE.ORG link : CVE-2025-21728

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo