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vuln-cve/data/2026/93xxx/CVE-2026-93263.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-93263",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-09-17T16:02:15.097Z",
"datePublished": "2026-09-24T15:52:02.877Z",
"dateUpdated": "2026-10-19T09:08:16.442Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-19T09:08:16.442Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: eswin: Zero-initialize stack-allocated clk_init_data\n\neswin_clk_register_pll() and eswin_register_clkdiv() declare a struct\nclk_init_data on the stack and only initialize some of its fields\n(parent_data respectively parent_hws). clk_core_populate_parent_map()\nchecks parent_names first and parent_data second before falling back\nto parent_hws, so leftover stack garbage in the uninitialized fields\nhijacks parent resolution and the clk core dereferences a bogus\npointer:\n\n Unable to handle kernel NULL pointer dereference at virtual address 000000000000000c\n Oops [#1]\n epc : __clk_register+0x31a/0x7f0\n [<ffffffff805dc774>] __clk_register+0x31a/0x7f0\n [<ffffffff805dcd76>] devm_clk_hw_register+0x2a/0x94\n [<ffffffff805e319a>] eswin_register_clkdiv+0x80/0xd0\n [<ffffffff805e34a0>] eswin_clk_register_clks+0x162/0x1a0\n [<ffffffff805e3736>] eic7700_clk_probe+0x146/0x180\n [<ffffffff8065d23c>] platform_probe+0x3c/0x7a\n\nObserved on EIC7700 hardware (with the driver backported to a 6.17\ntree); whether the bug triggers depends entirely on what the stack\nhappens to contain when the registration helpers run.\n\nZero-initialize both structures."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/clk/eswin/clk.c"
],
"versions": [
{
"version": "cd44f127c1d42833a32ba0a0965255ee6184f8c1",
"lessThan": "1183dc2450a268a536a15da8b106ec520cdbd19f",
"status": "affected",
"versionType": "git"
},
{
"version": "cd44f127c1d42833a32ba0a0965255ee6184f8c1",
"lessThan": "011d8de504bc84402aabc1dda1cf0552fe9a5af2",
"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/clk/eswin/clk.c"
],
"versions": [
{
"version": "7.1",
"status": "affected"
},
{
"version": "0",
"lessThan": "7.1",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2.6",
"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": "7.1",
"versionEndExcluding": "7.2.6"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "7.1",
"versionEndExcluding": "7.3"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/1183dc2450a268a536a15da8b106ec520cdbd19f"
},
{
"url": "https://git.kernel.org/stable/c/011d8de504bc84402aabc1dda1cf0552fe9a5af2"
}
],
"title": "clk: eswin: Zero-initialize stack-allocated clk_init_data",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}