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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < aca3ad0c262f54a5b5c95dda80a48365997d1224; >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 41aafca57de4a4c026701622bd4648f112a9edcd; >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 4820847e036ff1035b01b69ad68dfc17e7028fe9; >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 6a3ec6efbc4f90e0ccb2e71574f07351f19996f4; >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < df6f995358dc1f3c42484f5cfe241d7bd3e1cd15; >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 88d386243ed374ac969dabd3bbc1409a31d81818; >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 6aa9841d917532d0f2d932d1ff2f3a94305aaf47; >= e27cca96cd68fa2c6814c90f9a1cfd36bb68c593, < 0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2 |
| Linux | Linux | 5.6 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | >= V3.1.7, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | >= V3.1.6, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | >= V3.1.5, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | >= V3.1.7, < * |
References
- https://git.kernel.org/stable/c/0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2Patch
- https://git.kernel.org/stable/c/41aafca57de4a4c026701622bd4648f112a9edcdPatch
- https://git.kernel.org/stable/c/4820847e036ff1035b01b69ad68dfc17e7028fe9Patch
- https://git.kernel.org/stable/c/6a3ec6efbc4f90e0ccb2e71574f07351f19996f4Patch
- https://git.kernel.org/stable/c/6aa9841d917532d0f2d932d1ff2f3a94305aaf47Patch
- https://git.kernel.org/stable/c/88d386243ed374ac969dabd3bbc1409a31d81818Patch
- https://git.kernel.org/stable/c/aca3ad0c262f54a5b5c95dda80a48365997d1224Patch
- https://git.kernel.org/stable/c/df6f995358dc1f3c42484f5cfe241d7bd3e1cd15Patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
Timeline
- Published
- Apr 22, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Modified