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CVE-2026-46246 (GCVE-0-2026-46246)

Vulnerability from cvelistv5 – Published: 2026-06-03 15:49 – Updated: 2026-06-03 15:49
VLAI
Title
power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler
Summary
In the Linux kernel, the following vulnerability has been resolved: power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler Using the `devm_` variant for requesting IRQ _before_ the `devm_` variant for allocating/registering the `extcon` handle, means that the `extcon` 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 `extcon` handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling `extcon_set_state_sync()` with a freed `extcon` handle. Which usually crashes the system or otherwise silently corrupts the memory... Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `extcon` 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: f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 , < 9fab0120907e6965168e55b1e17cb9dfaf262b86 (git)
Affected: f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 , < 47abfc207ab02cf1297257e282e8048da63f0d08 (git)
Affected: f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 , < 48e0f68b50c344bb2d78d65dd98f93e41276ee00 (git)
Affected: f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 , < 23067259919663580c6f81801847cfc7bd54fd1f (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (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)
guessed Create a notification for this product.
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{
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Lo que usualmente bloquea el sistema o de otra manera corrompe silenciosamente la memoria...\\n\\nCorrige este uso despu\u00e9s de liberaci\u00f3n propenso a condiciones de carrera asegur\u00e1ndose de que la IRQ sea solicitada _despu\u00e9s_ del registro del manejador \u0027extcon\u0027.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/power/supply/pm8916_lbc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13\",\"lessThan\":\"9fab0120907e6965168e55b1e17cb9dfaf262b86\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13\",\"lessThan\":\"47abfc207ab02cf1297257e282e8048da63f0d08\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13\",\"lessThan\":\"48e0f68b50c344bb2d78d65dd98f93e41276ee00\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f8d7a3d21160a0cab4d15b81231f2a76b0fcee13\",\"lessThan\":\"23067259919663580c6f81801847cfc7bd54fd1f\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/power/supply/pm8916_lbc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.75\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.14\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.4\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.75\",\"matchCriteriaId\":\"BCE16369-98ED-41CF-8995-DFDC10B288D2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.14\",\"matchCriteriaId\":\"BF463CB7-1F58-4607-B847-77ED23E4B9B7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"6.19.4\",\"matchCriteriaId\":\"672A3E79-EC03-479D-8503-361DFBDC8092\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/23067259919663580c6f81801847cfc7bd54fd1f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/47abfc207ab02cf1297257e282e8048da63f0d08\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/48e0f68b50c344bb2d78d65dd98f93e41276ee00\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9fab0120907e6965168e55b1e17cb9dfaf262b86\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T11:15:15+00:00",
      "cve": "CVE-2026-46246",
      "id": "CVE-2026-46246",
      "initial_release_date": "2026-06-03T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46246.json",
      "version": "3"
    }
  }
}



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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

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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.