spi: davinci: switch to managed controller allocation
In the Linux kernel, the following vulnerability has been resolved: spi: davinci: switch to managed controller allocation The controller is allocated with the non-managed spi_alloc_host() while the interrupt is registered with devm_request_threaded_irq(). During removal, spi_bitbang_stop() only unregisters the controller; the subsequent spi_controller_put() then frees the controller together with its embedded davinci_spi devdata, which is the IRQ handler's dev_id. The devm_request_threaded_irq() release action (free_irq()), which drains the handler, does not run until after .remove() returns. A late or latched interrupt can therefore reach davinci_spi_irq() and dereference already-freed memory. Switch to devm_spi_alloc_host() so that the devres LIFO order releases the controller only after free_irq() has drained the handler, and drop the now-redundant spi_controller_put() from .remove(). The probe error path is simplified to direct returns. The clock is acquired with devm_clk_get_enabled(), which is registered after the IRQ and thus released before it by the devres LIFO order. Drain the interrupt explicitly with devm_free_irq() before disabling the controller so that a late interrupt cannot access the registers of a clock-gated controller. This issue was found by an in-house static analysis tool.
CVE-2026-90410
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-2026-90410
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": "5b3bb5963ff23a344062aba04937533a6f575761",
"lessThan": "29e37f768f35592e26477f703649bd2e6f18d857",
"versionType": "git"
},
{
"status": "affected",
"version": "5b3bb5963ff23a344062aba04937533a6f575761",
"lessThan": "f9452eba71fbfcee55c0b8e030ee3615e9f75f65",
"versionType": "git"
},
{
"status": "affected",
"version": "5b3bb5963ff23a344062aba04937533a6f575761",
"lessThan": "3b544072185c3d19ddec621ec9f6897ea2d10ee3",
"versionType": "git"
},
{
"status": "affected",
"version": "5b3bb5963ff23a344062aba04937533a6f575761",
"lessThan": "1a7958ce58dc95b06615df00c120ece4eb9ccc86",
"versionType": "git"
},
{
"status": "affected",
"version": "5b3bb5963ff23a344062aba04937533a6f575761",
"lessThan": "ea408a05dc8f18b4a184b88d6e19d2fd1acc1527",
"versionType": "git"
}
],
"programFiles": [
"drivers/spi/spi-davinci.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/spi/spi-davinci.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90410
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36730 · Revision 1
- Added to Heist Feed
- Publisher date