clk: eswin: Zero-initialize stack-allocated clk_init_data
In the Linux kernel, the following vulnerability has been resolved: clk: eswin: Zero-initialize stack-allocated clk_init_data eswin_clk_register_pll() and eswin_register_clkdiv() declare a struct clk_init_data on the stack and only initialize some of its fields (parent_data respectively parent_hws). clk_core_populate_parent_map() checks parent_names first and parent_data second before falling back to parent_hws, so leftover stack garbage in the uninitialized fields hijacks parent resolution and the clk core dereferences a bogus pointer: Unable to handle kernel NULL pointer dereference at virtual address 000000000000000c Oops [#1] epc : __clk_register+0x31a/0x7f0 [] __clk_register+0x31a/0x7f0 [] devm_clk_hw_register+0x2a/0x94 [] eswin_register_clkdiv+0x80/0xd0 [] eswin_clk_register_clks+0x162/0x1a0 [] eic7700_clk_probe+0x146/0x180 [] platform_probe+0x3c/0x7a Observed on EIC7700 hardware (with the driver backported to a 6.17 tree); whether the bug triggers depends entirely on what the stack happens to contain when the registration helpers run. Zero-initialize both structures.
CVE-2026-93263
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93263
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "cd44f127c1d42833a32ba0a0965255ee6184f8c1",
"lessThan": "1183dc2450a268a536a15da8b106ec520cdbd19f",
"versionType": "git"
},
{
"status": "affected",
"version": "cd44f127c1d42833a32ba0a0965255ee6184f8c1",
"lessThan": "011d8de504bc84402aabc1dda1cf0552fe9a5af2",
"versionType": "git"
}
],
"programFiles": [
"drivers/clk/eswin/clk.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "7.1"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "7.1",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/clk/eswin/clk.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93263
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37956 · Revision 1
- Added to Heist Feed
- Publisher date