net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()

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Summary

CVECVE-2026-31658
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 15:16:45 UTC
Updated2026-07-14 13:18:46 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit() When dma_map_single() fails in tse_start_xmit(), the function returns NETDEV_TX_OK without freeing the skb. Since NETDEV_TX_OK tells the stack the packet was consumed, the skb is never freed, leaking memory on every DMA mapping failure. Add dev_kfree_skb_any() before returning to properly free the skb.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

EPSS: 0.000240000 probability, percentile 0.067850000 (date 2026-04-27)

Problem Types: CWE-401

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected bbd2190ce96d8fce031f0526c1f970b68adc9d1a ae2cd46f57f422b51aedd406ff5d75cbff401d5d git Not specified
CNA Linux Linux affected bbd2190ce96d8fce031f0526c1f970b68adc9d1a cb1d318702fdf643061350d164250198df4116f2 git Not specified
CNA Linux Linux affected bbd2190ce96d8fce031f0526c1f970b68adc9d1a d5ec406f0543bd6cdfd563b08015fdec8c4d5712 git Not specified
CNA Linux Linux affected bbd2190ce96d8fce031f0526c1f970b68adc9d1a 2eb9d67704ca8f1101f7435b85f113ede471f9f2 git Not specified
CNA Linux Linux affected bbd2190ce96d8fce031f0526c1f970b68adc9d1a 9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7 git Not specified
CNA Linux Linux affected bbd2190ce96d8fce031f0526c1f970b68adc9d1a 60f462cd2716d86bd2174f9d5e035c9278f30480 git Not specified
CNA Linux Linux affected bbd2190ce96d8fce031f0526c1f970b68adc9d1a 3aca300e88afe56afb000cdc4c65383014fb17f9 git Not specified
CNA Linux Linux affected bbd2190ce96d8fce031f0526c1f970b68adc9d1a 6dede3967619b5944003227a5d09fdc21ed57d10 git Not specified
CNA Linux Linux affected 3.15 Not specified
CNA Linux Linux unaffected 3.15 semver Not specified
CNA Linux Linux unaffected 5.10.253 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.203 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.169 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.135 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.82 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.23 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.13 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d5ec406f0543bd6cdfd563b08015fdec8c4d5712 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ae2cd46f57f422b51aedd406ff5d75cbff401d5d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6dede3967619b5944003227a5d09fdc21ed57d10 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-082556.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/60f462cd2716d86bd2174f9d5e035c9278f30480 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-019113.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/3aca300e88afe56afb000cdc4c65383014fb17f9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/cb1d318702fdf643061350d164250198df4116f2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/9f3ec44aeb58501d11834048d5d0dbaeacb6d4e7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/2eb9d67704ca8f1101f7435b85f113ede471f9f2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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