CVE-2026-45879 (GCVE-0-2026-45879)
Vulnerability from cvelistv5
Published
2026-05-27 12:16
Modified
2026-05-27 12:16
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
power: supply: bq25980: Fix use-after-free in power_supply_changed()
Using the `devm_` variant for requesting IRQ _before_ the `devm_`
variant for allocating/registering the `power_supply` handle, means that
the `power_supply` handle will be deallocated/unregistered _before_ the
interrupt handler (since `devm_` naturally deallocates in reverse
allocation order). This means that during removal, there is a race
condition where an interrupt can fire just _after_ the `power_supply`
handle has been freed, *but* just _before_ the corresponding
unregistration of the IRQ handler has run.
This will lead to the IRQ handler calling `power_supply_changed()` with
a freed `power_supply` handle. Which usually crashes the system or
otherwise silently corrupts the memory...
Note that there is a similar situation which can also happen during
`probe()`; the possibility of an interrupt firing _before_ registering
the `power_supply` handle. This would then lead to the nasty situation
of using the `power_supply` handle *uninitialized* in
`power_supply_changed()`.
Fix this racy use-after-free by making sure the IRQ is requested _after_
the registration of the `power_supply` handle.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 5069185fc18e810715a91d80fcd075e03add600c Version: 5069185fc18e810715a91d80fcd075e03add600c Version: 5069185fc18e810715a91d80fcd075e03add600c Version: 5069185fc18e810715a91d80fcd075e03add600c Version: 5069185fc18e810715a91d80fcd075e03add600c Version: 5069185fc18e810715a91d80fcd075e03add600c Version: 5069185fc18e810715a91d80fcd075e03add600c Version: 5069185fc18e810715a91d80fcd075e03add600c |
||
{
"containers": {
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"programFiles": [
"drivers/power/supply/bq25980_charger.c"
],
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.10"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.252",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.202",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.165",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.128",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.14",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.4",
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},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
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}
],
"negate": false,
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: bq25980: Fix use-after-free in power_supply_changed()\n\nUsing the `devm_` variant for requesting IRQ _before_ the `devm_`\nvariant for allocating/registering the `power_supply` handle, means that\nthe `power_supply` handle will be deallocated/unregistered _before_ the\ninterrupt handler (since `devm_` naturally deallocates in reverse\nallocation order). This means that during removal, there is a race\ncondition where an interrupt can fire just _after_ the `power_supply`\nhandle has been freed, *but* just _before_ the corresponding\nunregistration of the IRQ handler has run.\n\nThis will lead to the IRQ handler calling `power_supply_changed()` with\na freed `power_supply` handle. Which usually crashes the system or\notherwise silently corrupts the memory...\n\nNote that there is a similar situation which can also happen during\n`probe()`; the possibility of an interrupt firing _before_ registering\nthe `power_supply` handle. This would then lead to the nasty situation\nof using the `power_supply` handle *uninitialized* in\n`power_supply_changed()`.\n\nFix this racy use-after-free by making sure the IRQ is requested _after_\nthe registration of the `power_supply` handle."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T12:16:50.137Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/86f93dfb23f5bf4f285c4256a7e909d222f7de56"
},
{
"url": "https://git.kernel.org/stable/c/16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f"
},
{
"url": "https://git.kernel.org/stable/c/0560a4b09c92e2ecaa883965cf6f9ca51c158ff9"
},
{
"url": "https://git.kernel.org/stable/c/0de95d29d847c6217b7d5845e24a71a4aee7b359"
},
{
"url": "https://git.kernel.org/stable/c/4aeaf03c17260415c2fdd55992f9ad4188d5455a"
},
{
"url": "https://git.kernel.org/stable/c/03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c"
},
{
"url": "https://git.kernel.org/stable/c/abea607ff2f62f4c0a5fb29f7fbdaaab163276a4"
},
{
"url": "https://git.kernel.org/stable/c/5f0b1cb41906e86b64bf69f5ededb83b0d757c27"
}
],
"title": "power: supply: bq25980: Fix use-after-free in power_supply_changed()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-45879",
"datePublished": "2026-05-27T12:16:50.137Z",
"dateReserved": "2026-05-13T15:03:33.081Z",
"dateUpdated": "2026-05-27T12:16:50.137Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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