CVE-2026-31518
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593; < aca3ad0c262f54a5b5c95dda80a48365997d1224 (affected, git) ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593; < 41aafca57de4a4c026701622bd4648f112a9edcd (affected, git) ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593; < 4820847e036ff1035b01b69ad68dfc17e7028fe9 (affected, git) ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593; < 6a3ec6efbc4f90e0ccb2e71574f07351f19996f4 (affected, git) ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593; < df6f995358dc1f3c42484f5cfe241d7bd3e1cd15 (affected, git) ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593; < 88d386243ed374ac969dabd3bbc1409a31d81818 (affected, git) ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593; < 6aa9841d917532d0f2d932d1ff2f3a94305aaf47 (affected, git) ≥ e27cca96cd68fa2c6814c90f9a1cfd36bb68c593; < 0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2 (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
5.6 (affected) ≥ 0; < 5.6 (unaffected, semver) ≥ 5.10.253; ≤ 5.10.* (unaffected, semver) ≥ 5.15.203; ≤ 5.15.* (unaffected, semver) ≥ 6.1.168; ≤ 6.1.* (unaffected, semver) ≥ 6.6.131; ≤ 6.6.* (unaffected, semver) ≥ 6.12.80; ≤ 6.12.* (unaffected, semver) ≥ 6.18.21; ≤ 6.18.* (unaffected, semver) ≥ 6.19.11; ≤ 6.19.* (unaffected, semver) ≥ 7.0; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.6; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.5; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.7; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Siemens |
≥ V3.1.6; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Siemens |
≥ V3.1.5; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Siemens |
≥ V3.1.7; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.6; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.5; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Siemens |
≥ V3.1.7; < * (affected, custom)
Other versions: unknown |
ADP: siemens-SADP |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/aca3ad0c262f54a5b5c95dda80a48365997d1224CNA: Linux
- https://git.kernel.org/stable/c/41aafca57de4a4c026701622bd4648f112a9edcdCNA: Linux
- https://git.kernel.org/stable/c/4820847e036ff1035b01b69ad68dfc17e7028fe9CNA: Linux
- https://git.kernel.org/stable/c/6a3ec6efbc4f90e0ccb2e71574f07351f19996f4CNA: Linux
- https://git.kernel.org/stable/c/df6f995358dc1f3c42484f5cfe241d7bd3e1cd15CNA: Linux
- https://git.kernel.org/stable/c/88d386243ed374ac969dabd3bbc1409a31d81818CNA: Linux
- https://git.kernel.org/stable/c/6aa9841d917532d0f2d932d1ff2f3a94305aaf47CNA: Linux
- https://git.kernel.org/stable/c/0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2CNA: Linux
- https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlADP: siemens-SADP
- https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlADP: siemens-SADP
- https://cert-portal.siemens.com/productcert/html/ssa-457936.htmlADP: siemens-SADP
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