CVE-2022-50642 (GCVE-0-2022-50642)

Vulnerability from cvelistv5 – Published: 2025-12-09 00:00 – Updated: 2025-12-09 00:00
VLAI?
Title
platform/chrome: cros_ec_typec: zero out stale pointers
Summary
In the Linux kernel, the following vulnerability has been resolved: platform/chrome: cros_ec_typec: zero out stale pointers `cros_typec_get_switch_handles` allocates four pointers when obtaining type-c switch handles. These pointers are all freed if failing to obtain any of them; therefore, pointers in `port` become stale. The stale pointers eventually cause use-after-free or double free in later code paths. Zeroing out all pointer fields after freeing to eliminate these stale pointers.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f28adb41dab4a2795fd959750df57adffd2bb0be , < 0ceadb5a3e45f1b81cf54bd496b40a5e50b6bd40 (git)
Affected: f28adb41dab4a2795fd959750df57adffd2bb0be , < b610758bb3e0674644c1255cdafc2f46b7e05ff9 (git)
Affected: f28adb41dab4a2795fd959750df57adffd2bb0be , < 6613f36a2fa5c69e528bccba8b3d831f759dad2f (git)
Affected: f28adb41dab4a2795fd959750df57adffd2bb0be , < 9a8aadcf0b459c1257b9477fd6402e1d5952ae07 (git)
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    Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "drivers/platform/chrome/cros_ec_typec.c"
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              "operator": "OR"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/chrome: cros_ec_typec: zero out stale pointers\n\n`cros_typec_get_switch_handles` allocates four pointers when obtaining\ntype-c switch handles. These pointers are all freed if failing to obtain\nany of them; therefore, pointers in `port` become stale. The stale\npointers eventually cause use-after-free or double free in later code\npaths. Zeroing out all pointer fields after freeing to eliminate these\nstale pointers."
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    "datePublished": "2025-12-09T00:00:16.490Z",
    "dateReserved": "2025-12-08T23:57:43.370Z",
    "dateUpdated": "2025-12-09T00:00:16.490Z",
    "state": "PUBLISHED"
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  • 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.
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  • 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.



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