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CVE-2026-45885 (GCVE-0-2026-45885)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:16 – Updated: 2026-05-27 12:16
VLAI
Title
power: supply: cpcap-battery: Fix use-after-free in power_supply_changed()
Summary
In the Linux kernel, the following vulnerability has been resolved: power: supply: cpcap-battery: 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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 874b2adbed1253a11549cb9b7b912ab65fea9cf2 , < c549dd3de4b3f6e726d1b8386d40ccf7d3abdbe4 (git)
Affected: 874b2adbed1253a11549cb9b7b912ab65fea9cf2 , < 3ff75cba1c98349a23a8f9333981deba1972cc11 (git)
Affected: 874b2adbed1253a11549cb9b7b912ab65fea9cf2 , < 2ce2334be155bd8bad6377e99984246ce4dbd08c (git)
Affected: 874b2adbed1253a11549cb9b7b912ab65fea9cf2 , < cbb9b07f88a9ef6518934c41eb3e8cf840d657d5 (git)
Affected: 874b2adbed1253a11549cb9b7b912ab65fea9cf2 , < f3fbe309c9bfe1aac1e2b26543e9dc4829f3275a (git)
Affected: 874b2adbed1253a11549cb9b7b912ab65fea9cf2 , < 2841bbb5a35c4449c0a0458e8e476b2a62f95147 (git)
Affected: 874b2adbed1253a11549cb9b7b912ab65fea9cf2 , < e261be6f18929f2397cd54cd583a2df624c129c1 (git)
Affected: 874b2adbed1253a11549cb9b7b912ab65fea9cf2 , < 642f33e34b969eedec334738fd5df95d2dc42742 (git)
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Linux Linux Affected: 4.13
Unaffected: 0 , < 4.13 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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    "redhat_vex": {
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      "current_release_date": "2026-06-28T07:39:57+00:00",
      "cve": "CVE-2026-45885",
      "id": "CVE-2026-45885",
      "initial_release_date": "2026-05-27T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: power: supply: cpcap-battery: Fix use-after-free in power_supply_changed()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45885.json",
      "version": "3"
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      "cve": "CVE-2026-45885",
      "id": "CVE-2026-45885",
      "initial_release_date": "2026-05-28T03:56:52Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "643",
      "product_status:known_not_affected": "87",
      "product_status:recommended": "250",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-45885",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-45885.json",
      "version": "10"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.