IM
IronMonkey Threat Research

CVE-2026-31518 MEDIUM

Published: 2026-04-22 | Last Modified: 2026-07-14 | Status: Modified

Description

In the Linux kernel, the following vulnerability has been resolved: esp: fix skb leak with espintcp and async crypto When the TX queue for espintcp is full, esp_output_tail_tcp will return an error and not free the skb, because with synchronous crypto, the common xfrm output code will drop the packet for us. With async crypto (esp_output_done), we need to drop the skb when esp_output_tail_tcp returns an error.

CVSS Metrics

Base Score: 5.5 (MEDIUM)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorLOCAL
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 3.6

Weaknesses

Source Type Description
[email protected] Primary
en CWE-401

Affected Products

Vendor Product Version Update Type
linux linux_kernel * <built-in method update of dict object at 0x7d242455de40> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7d2424536840> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7d239fbdd780> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7d24245b8ec0> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7d239fbdc900> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7d239fbdf400> Operating System
linux linux_kernel * <built-in method update of dict object at 0x7d2424536400> Operating System
linux linux_kernel 7.0 <built-in method update of dict object at 0x7d242455da40> Operating System
linux linux_kernel 7.0 <built-in method update of dict object at 0x7d23beb15400> Operating System
linux linux_kernel 7.0 <built-in method update of dict object at 0x7d239fbde0c0> Operating System
linux linux_kernel 7.0 <built-in method update of dict object at 0x7d25cf3df100> Operating System
linux linux_kernel 7.0 <built-in method update of dict object at 0x7d23beb149c0> Operating System
linux linux_kernel 7.0 <built-in method update of dict object at 0x7d2462070fc0> Operating System
linux linux_kernel 7.0 <built-in method update of dict object at 0x7d23bea89c40> Operating System

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
Yes cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*

References

Notification
Message here