VULN/vuln-cve
1
0 Fork 0
Code Pull Requests Actions 1 Activity
Files
c1444140e59c61ba154436ea0cd6284d8a97c3f0
vuln-cve/data/2026/97xxx/CVE-2026-97573.json
T

264 lines
14 KiB
JSON
Raw Blame History

{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-97573",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-09-24T16:01:01.156Z",
"datePublished": "2026-09-25T10:21:57.443Z",
"dateUpdated": "2026-10-19T09:09:35.902Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-19T09:09:35.902Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()\n\nbnxt_rx_ring_reset() frees the ring buffers and then reallocates them,\nignoring the result.\n\nbnxt_alloc_one_rx_ring() can fail in bnxt_alloc_one_tpa_info_data(), which\nreturns -ENOMEM on the first failed allocation and leaves the remaining\nrxr->rx_tpa[] entries zeroed.\n\nThe error isn't propagated up, so the loop in bnxt_rx_ring_reset\ncontinues and at the end the code re-enables TPA with partially\nunallocated rx_tpa array.\n\nThis means that when the agg_id from hardware is mapped to a SW index in\nrxr->rx_tpa[], an uninitialized slot can be chosen which would hand a\nzero DMA address to the device.\n\nFix this by falling back to a global reset, which is what the existing\ncode already does when other functions fail, but unlike the other\nfailure cases this particular failure has to return because TPA can't\nbe re-enabled since the allocation failed."
}
],
"metrics": [
{
"cvssV3_1": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 8.1,
"baseSeverity": "HIGH"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The fixed function bnxt_rx_ring_reset() is a driver error path with no malformed input. What it damages is received data: bnxt_tpa_start() hands the NIC a stale rx_tpa[] mapping, and the NIC DMAs packet bytes sent by a remote host into that freed buffer. The remote peer supplies the data that gets written, so the vector is Network.\nAC:H - Two things must happen together. A pre-P5 chip must hit an RX buffer error, cons mismatch or ring-monitor event that schedules the per-ring reset, and the GFP_KERNEL refill in bnxt_alloc_one_tpa_info_data() must fail under memory pressure. A remote sender cannot force that allocation failure.\nPR:N - No authentication is involved. Any host that can send TCP traffic that the NIC aggregates with TPA (hardware GRO/LRO) fills the stale buffers and can also generate the traffic that leads to RX buffer errors.\nUI:N - No user action is needed. The reset runs from the bnxt sp_task workqueue, and the bad TPA slot is used as soon as TPA_START completions arrive.\nS:U - The corruption hits kernel memory on the host that owns the NIC, which is the same authority as the driver. No VM or other security boundary is crossed.\nC:H - bnxt_free_one_tpa_info_data() clears tpa_info->data but leaves tpa_info->mapping stale. The NIC then writes into a page returned to page_pool that can be reused, and a reused buffer carrying other data can end up delivered as the next RX packet.\nI:H - The device DMA-writes TCP payload bytes chosen by the remote sender into freed memory (bnxt_tpa_start() puts the stale mapping into rx_bd_haddr). That is a write into memory the kernel may have reused, with attacker-chosen contents.\nA:H - The NULL tpa_info->data is moved into rx_buf_ring by bnxt_tpa_start(). When that buffer is consumed, the RX path dereferences NULL, and on top of that the stray DMA corrupts memory, so the kernel crashes."
}
]
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/ethernet/broadcom/bnxt/bnxt.c"
],
"versions": [
{
"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14",
"lessThan": "52fc97cbc3ba118aad84e7c001bf02ebe8496f70",
"status": "affected",
"versionType": "git"
},
{
"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14",
"lessThan": "40b4a7bb6b0b872b45f017dbf211268de098b75c",
"status": "affected",
"versionType": "git"
},
{
"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14",
"lessThan": "af9a2bdaba0b4ceb0fc5e5122ef3fc6b7e5a366a",
"status": "affected",
"versionType": "git"
},
{
"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14",
"lessThan": "cfec9e7f15a56cb0104bac13d01e5d11e1ba84fb",
"status": "affected",
"versionType": "git"
},
{
"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14",
"lessThan": "1a3670b6a6b5679fe56c5890157b344f091e64f8",
"status": "affected",
"versionType": "git"
},
{
"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14",
"lessThan": "4a17c73c83798c2fa9c7920ad5a98803adce3e01",
"status": "affected",
"versionType": "git"
},
{
"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14",
"lessThan": "8b2fd5c0aeda935294159206af9d6179282d425a",
"status": "affected",
"versionType": "git"
},
{
"version": "8fbf58e17dce8f250dda9ad6b0a49b3041f0af14",
"lessThan": "961e2a17c5e3559b3f8654d2daabdd25a42e770a",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/ethernet/broadcom/bnxt/bnxt.c"
],
"versions": [
{
"version": "5.10",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.10",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.271",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.222",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.189",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.158",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.111",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.53",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2.7",
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "5.10.271"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "5.15.222"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.1.189"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.6.158"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.12.111"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.18.53"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "7.2.7"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "7.3"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/52fc97cbc3ba118aad84e7c001bf02ebe8496f70"
},
{
"url": "https://git.kernel.org/stable/c/40b4a7bb6b0b872b45f017dbf211268de098b75c"
},
{
"url": "https://git.kernel.org/stable/c/af9a2bdaba0b4ceb0fc5e5122ef3fc6b7e5a366a"
},
{
"url": "https://git.kernel.org/stable/c/cfec9e7f15a56cb0104bac13d01e5d11e1ba84fb"
},
{
"url": "https://git.kernel.org/stable/c/1a3670b6a6b5679fe56c5890157b344f091e64f8"
},
{
"url": "https://git.kernel.org/stable/c/4a17c73c83798c2fa9c7920ad5a98803adce3e01"
},
{
"url": "https://git.kernel.org/stable/c/8b2fd5c0aeda935294159206af9d6179282d425a"
},
{
"url": "https://git.kernel.org/stable/c/961e2a17c5e3559b3f8654d2daabdd25a42e770a"
}
],
"title": "bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
View Git Blame Copy Permalink