CVE-2026-53229 (GCVE-0-2026-53229)
Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-08-05 12:34
VLAI
EPSS
VEX
Title
net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure
Summary
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure
In the XSK branch of mlx5e_xmit_xdp_buff(), when sq->xmit_xdp_frame()
returns false (e.g. XDPSQ is full), the function returns without
unmapping the DMA address or freeing the xdp_frame allocated by
xdp_convert_zc_to_xdp_frame(). The xdpi_fifo push only happens on
success, so the completion path cannot recover these entries.
With CONFIG_DMA_API_DEBUG=y, the leak surfaces on driver unbind:
DMA-API: pci 0000:08:00.0: device driver has pending DMA
allocations while released from device [count=1116]
One of leaked entries details: [device address=0x000000010ffd7028]
[size=1534 bytes] [mapped with DMA_TO_DEVICE] [mapped as phy]
WARNING: kernel/dma/debug.c:881 at dma_debug_device_change+0x127/0x180
...
DMA-API: Mapped at:
debug_dma_map_phys+0x4b/0xd0
dma_map_phys+0xfd/0x2d0
mlx5e_xdp_handle+0x5ae/0xac0 [mlx5_core]
mlx5e_xsk_skb_from_cqe_mpwrq_linear+0xc4/0x170 [mlx5_core]
mlx5e_handle_rx_cqe_mpwrq+0xc1/0x290 [mlx5_core]
Add the missing unmap + xdp_return_frame, matching the cleanup already
done in mlx5e_xdp_xmit(). has_frags is rejected earlier in this branch,
so no per-frag unmap is needed.
Severity
7.5 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
84a0a2310d6de247335574649726cb000c7c0074 , < 7b3eeba50fbc3b45f279037c29a87a90e8bac1e1
(git)
Affected: 84a0a2310d6de247335574649726cb000c7c0074 , < 2789b74ae1f4b68333c9d5eec2f3354d07b16e61 (git) Affected: 84a0a2310d6de247335574649726cb000c7c0074 , < 0aabca726b43d833721034e97d99efcc8237b22a (git) Affected: 84a0a2310d6de247335574649726cb000c7c0074 , < b69004f5a6ad32da84d8aa5b23b9c0caafe6252e (git) |
guessed | |
| Linux | Linux |
Affected:
5.3
Unaffected: 0 , < 5.3 (semver) Unaffected: 6.12.94 , ≤ 6.12.* (semver) Unaffected: 6.18.36 , ≤ 6.18.* (semver) Unaffected: 7.0.13 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
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}
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}
]
}
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{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure\n\nIn the XSK branch of mlx5e_xmit_xdp_buff(), when sq-\u003exmit_xdp_frame()\nreturns false (e.g. XDPSQ is full), the function returns without\nunmapping the DMA address or freeing the xdp_frame allocated by\nxdp_convert_zc_to_xdp_frame(). The xdpi_fifo push only happens on\nsuccess, so the completion path cannot recover these entries.\n\nWith CONFIG_DMA_API_DEBUG=y, the leak surfaces on driver unbind:\n\n DMA-API: pci 0000:08:00.0: device driver has pending DMA\n allocations while released from device [count=1116]\n One of leaked entries details: [device address=0x000000010ffd7028]\n [size=1534 bytes] [mapped with DMA_TO_DEVICE] [mapped as phy]\n WARNING: kernel/dma/debug.c:881 at dma_debug_device_change+0x127/0x180\n ...\n DMA-API: Mapped at:\n debug_dma_map_phys+0x4b/0xd0\n dma_map_phys+0xfd/0x2d0\n mlx5e_xdp_handle+0x5ae/0xac0 [mlx5_core]\n mlx5e_xsk_skb_from_cqe_mpwrq_linear+0xc4/0x170 [mlx5_core]\n mlx5e_handle_rx_cqe_mpwrq+0xc1/0x290 [mlx5_core]\n\nAdd the missing unmap + xdp_return_frame, matching the cleanup already\ndone in mlx5e_xdp_xmit(). has_frags is rejected earlier in this branch,\nso no per-frag unmap is needed."
}
],
"id": "CVE-2026-53229",
"lastModified": "2026-07-02T20:44:41.630",
"metrics": {
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{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
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"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"vulnStatus": "Analyzed",
"weaknesses": [
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"description": [
{
"lang": "en",
"value": "CWE-401"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
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},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-05T14:31:48+00:00",
"cve": "CVE-2026-53229",
"id": "CVE-2026-53229",
"initial_release_date": "2026-06-25T00:00:00+00:00",
"product_status:known_affected": "246",
"product_status:known_not_affected": "28",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: net/mlx5e: xsk: Fix DMA and xdp_frame leak on XDP_TX xmit failure",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53229.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Confirmed: The vulnerability has been validated from an analyst's perspective.
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- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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