227 lines
11 KiB
JSON
227 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-97502",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-09-24T16:01:01.151Z",
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"datePublished": "2026-09-24T16:04:49.056Z",
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"dateUpdated": "2026-10-03T10:59:02.767Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-03T10:59:02.767Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: davinci: avoid NULL deref of host->data in IRQ handler\n\nmmc_davinci_irq() returns early only when both host->cmd and\nhost->data are NULL:\n\n if (host->cmd == NULL && host->data == NULL) {\n ...\n return IRQ_NONE;\n }\n\nSo we may legitimately reach the rest of the handler with\nhost->data == NULL (and therefore data == NULL). The DATDNE branch\nalready guards against this with an explicit \"if (data != NULL)\"\ncheck, but the subsequent TOUTRD (\"read data timeout\") and\nCRCWR/CRCRD (\"data CRC error\") branches dereference data\nunconditionally:\n\n if (qstatus & MMCST0_TOUTRD) {\n data->error = -ETIMEDOUT; <-- NULL deref\n ...\n davinci_abort_data(host, data);\n }\n\n if (qstatus & (MMCST0_CRCWR | MMCST0_CRCRD)) {\n data->error = -EILSEQ; <-- NULL deref\n ...\n }\n\nIf either bit is set in qstatus while host->data is NULL, the kernel\nwill crash inside the IRQ handler. smatch flags this:\n\n drivers/mmc/host/davinci_mmc.c:933 mmc_davinci_irq() error: we\n previously assumed 'data' could be null (see line 914)\n\nGate both branches on a non-NULL data, matching the existing pattern\nused by the DATDNE branch.\n\nNo functional change for callers where data is non-NULL, which is\nthe only case in which these branches did meaningful work before\nthis change."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/mmc/host/davinci_mmc.c"
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],
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"versions": [
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{
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"version": "b4cff4549b7a8c5fc8b88e3493b6287555f0512c",
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"lessThan": "51738de7dd5f8e8b33dfc07ef85bc06d3bf41e96",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4cff4549b7a8c5fc8b88e3493b6287555f0512c",
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"lessThan": "f216cf00e829895ff49bdf695c944915e59bd698",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4cff4549b7a8c5fc8b88e3493b6287555f0512c",
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"lessThan": "a0cde8d70d64c1a75fbd57f01d9f2d7cccac8319",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4cff4549b7a8c5fc8b88e3493b6287555f0512c",
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"lessThan": "3c5e3e5badbf0592332887d12db02458323682c3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4cff4549b7a8c5fc8b88e3493b6287555f0512c",
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"lessThan": "a01cedf230dc0fcd55b994f5e548d3982ba4c732",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4cff4549b7a8c5fc8b88e3493b6287555f0512c",
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"lessThan": "5b7e151fe9ea9311ba601849aaecdc4fc97fd577",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "b4cff4549b7a8c5fc8b88e3493b6287555f0512c",
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"lessThan": "4f28846aaf8db9668e338b8987973f8935edff34",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/mmc/host/davinci_mmc.c"
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],
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"versions": [
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{
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"version": "2.6.33",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.33",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.271",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.222",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.189",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.158",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.111",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.53",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.33",
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"versionEndExcluding": "5.10.271"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.33",
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"versionEndExcluding": "5.15.222"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.33",
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"versionEndExcluding": "6.1.189"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.33",
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"versionEndExcluding": "6.6.158"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.33",
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"versionEndExcluding": "6.12.111"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.33",
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"versionEndExcluding": "6.18.53"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.33",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/51738de7dd5f8e8b33dfc07ef85bc06d3bf41e96"
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},
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{
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"url": "https://git.kernel.org/stable/c/f216cf00e829895ff49bdf695c944915e59bd698"
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},
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{
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"url": "https://git.kernel.org/stable/c/a0cde8d70d64c1a75fbd57f01d9f2d7cccac8319"
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},
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{
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"url": "https://git.kernel.org/stable/c/3c5e3e5badbf0592332887d12db02458323682c3"
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},
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{
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"url": "https://git.kernel.org/stable/c/a01cedf230dc0fcd55b994f5e548d3982ba4c732"
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},
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{
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"url": "https://git.kernel.org/stable/c/5b7e151fe9ea9311ba601849aaecdc4fc97fd577"
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},
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{
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"url": "https://git.kernel.org/stable/c/4f28846aaf8db9668e338b8987973f8935edff34"
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}
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],
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"title": "mmc: davinci: avoid NULL deref of host->data in IRQ handler",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |