CVE-2026-31518

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Source
https://cve.org/CVERecord?id=CVE-2026-31518
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31518.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-31518
Downstream
Related
Published
2026-04-22T13:54:34.191Z
Modified
2026-06-24T18:29:18.392214462Z
Summary
esp: fix skb leak with espintcp and async crypto
Details

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, espoutputtail_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 (espoutputdone), we need to drop the skb when espoutputtail_tcp returns an error.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31518.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
e27cca96cd68fa2c6814c90f9a1cfd36bb68c593
Fixed
aca3ad0c262f54a5b5c95dda80a48365997d1224
Fixed
41aafca57de4a4c026701622bd4648f112a9edcd
Fixed
4820847e036ff1035b01b69ad68dfc17e7028fe9
Fixed
6a3ec6efbc4f90e0ccb2e71574f07351f19996f4
Fixed
df6f995358dc1f3c42484f5cfe241d7bd3e1cd15
Fixed
88d386243ed374ac969dabd3bbc1409a31d81818
Fixed
6aa9841d917532d0f2d932d1ff2f3a94305aaf47
Fixed
0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31518.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.6.0
Fixed
5.10.253
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.203
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.168
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.131
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.80
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.21
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.11

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31518.json"