esp: fix skb leak with espintcp and async crypto
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.
CVE-2026-31518
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-31518
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "aca3ad0c262f54a5b5c95dda80a48365997d1224",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "41aafca57de4a4c026701622bd4648f112a9edcd",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "4820847e036ff1035b01b69ad68dfc17e7028fe9",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "6a3ec6efbc4f90e0ccb2e71574f07351f19996f4",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "df6f995358dc1f3c42484f5cfe241d7bd3e1cd15",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "88d386243ed374ac969dabd3bbc1409a31d81818",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "6aa9841d917532d0f2d932d1ff2f3a94305aaf47",
"versionType": "git"
},
{
"status": "affected",
"version": "e27cca96cd68fa2c6814c90f9a1cfd36bb68c593",
"lessThan": "0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2",
"versionType": "git"
}
],
"programFiles": [
"net/ipv4/esp4.c",
"net/ipv6/esp6.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.168",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.131",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.80",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.21",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.11",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv4/esp4.c",
"net/ipv6/esp6.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-31518
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #28289 · Revision 1
- Added to Heist Feed
- Publisher date