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vuln-cve/data/2024/56xxx/CVE-2024-56593.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2024-56593",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-12-27T14:03:06.003Z",
"datePublished": "2024-12-27T14:51:00.466Z",
"dateUpdated": "2026-05-11T20:55:27.627Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T20:55:27.627Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: Fix oops due to NULL pointer dereference in brcmf_sdiod_sglist_rw()\n\nThis patch fixes a NULL pointer dereference bug in brcmfmac that occurs\nwhen a high 'sd_sgentry_align' value applies (e.g. 512) and a lot of queued SKBs\nare sent from the pkt queue.\n\nThe problem is the number of entries in the pre-allocated sgtable, it is\nnents = max(rxglom_size, txglom_size) + max(rxglom_size, txglom_size) >> 4 + 1.\nGiven the default [rt]xglom_size=32 it's actually 35 which is too small.\nWorst case, the pkt queue can end up with 64 SKBs. This occurs when a new SKB\nis added for each original SKB if tailroom isn't enough to hold tail_pad.\nAt least one sg entry is needed for each SKB. So, eventually the \"skb_queue_walk loop\"\nin brcmf_sdiod_sglist_rw may run out of sg entries. This makes sg_next return\nNULL and this causes the oops.\n\nThe patch sets nents to max(rxglom_size, txglom_size) * 2 to be able handle\nthe worst-case.\nBtw. this requires only 64-35=29 * 16 (or 20 if CONFIG_NEED_SG_DMA_LENGTH) = 464\nadditional bytes of memory."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c"
],
"versions": [
{
"version": "af1fa210f4fc6e304b859b386a3c8a266b1110ab",
"lessThan": "342f87d263462c2670b77ea9a32074cab2ac6fa1",
"status": "affected",
"versionType": "git"
},
{
"version": "af1fa210f4fc6e304b859b386a3c8a266b1110ab",
"lessThan": "7522d7d745d13fbeff3350fe6aa56c8dae263571",
"status": "affected",
"versionType": "git"
},
{
"version": "af1fa210f4fc6e304b859b386a3c8a266b1110ab",
"lessThan": "dfb3f9d3f602602de208da7bdcc0f6d5ee74af68",
"status": "affected",
"versionType": "git"
},
{
"version": "af1fa210f4fc6e304b859b386a3c8a266b1110ab",
"lessThan": "67a25ea28f8ec1da8894f2f115d01d3becf67dc7",
"status": "affected",
"versionType": "git"
},
{
"version": "af1fa210f4fc6e304b859b386a3c8a266b1110ab",
"lessThan": "07c020c6d14d29e5a3ea4e4576b8ecf956a80834",
"status": "affected",
"versionType": "git"
},
{
"version": "af1fa210f4fc6e304b859b386a3c8a266b1110ab",
"lessThan": "34941321b516bd7c6103bd01287d71a1804d19d3",
"status": "affected",
"versionType": "git"
},
{
"version": "af1fa210f4fc6e304b859b386a3c8a266b1110ab",
"lessThan": "857282b819cbaa0675aaab1e7542e2c0579f52d7",
"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/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c"
],
"versions": [
{
"version": "3.15",
"status": "affected"
},
{
"version": "0",
"lessThan": "3.15",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.4.287",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.231",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.174",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.120",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.66",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.5",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.13",
"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": "3.15",
"versionEndExcluding": "5.4.287"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.15",
"versionEndExcluding": "5.10.231"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.15",
"versionEndExcluding": "5.15.174"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.15",
"versionEndExcluding": "6.1.120"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.15",
"versionEndExcluding": "6.6.66"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.15",
"versionEndExcluding": "6.12.5"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.15",
"versionEndExcluding": "6.13"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/342f87d263462c2670b77ea9a32074cab2ac6fa1"
},
{
"url": "https://git.kernel.org/stable/c/7522d7d745d13fbeff3350fe6aa56c8dae263571"
},
{
"url": "https://git.kernel.org/stable/c/dfb3f9d3f602602de208da7bdcc0f6d5ee74af68"
},
{
"url": "https://git.kernel.org/stable/c/67a25ea28f8ec1da8894f2f115d01d3becf67dc7"
},
{
"url": "https://git.kernel.org/stable/c/07c020c6d14d29e5a3ea4e4576b8ecf956a80834"
},
{
"url": "https://git.kernel.org/stable/c/34941321b516bd7c6103bd01287d71a1804d19d3"
},
{
"url": "https://git.kernel.org/stable/c/857282b819cbaa0675aaab1e7542e2c0579f52d7"
}
],
"title": "wifi: brcmfmac: Fix oops due to NULL pointer dereference in brcmf_sdiod_sglist_rw()",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
}
},
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2024-56593",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2025-10-01T20:01:39.392025Z"
}
}
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"type": "CWE",
"cweId": "CWE-476",
"description": "CWE-476 NULL Pointer Dereference"
}
]
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2025-10-01T20:07:14.320Z"
}
},
{
"title": "CVE Program Container",
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2025-11-03T20:50:17.021Z"
}
}
]
}
}