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CVE-2022-49410 (GCVE-0-2022-49410)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:12 – Updated: 2026-08-05 08:55
VLAI
Title
tracing: Fix potential double free in create_var_ref()
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix potential double free in create_var_ref() In create_var_ref(), init_var_ref() is called to initialize the fields of variable ref_field, which is allocated in the previous function call to create_hist_field(). Function init_var_ref() allocates the corresponding fields such as ref_field->system, but frees these fields when the function encounters an error. The caller later calls destroy_hist_field() to conduct error handling, which frees the fields and the variable itself. This results in double free of the fields which are already freed in the previous function. Fix this by storing NULL to the corresponding fields when they are freed in init_var_ref().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:41 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 067fe038e70f6e64960d26a79c4df5f1413d0f13 , < f8b383f83cb573152c577eca1ef101e89995b72a (git)
Affected: 067fe038e70f6e64960d26a79c4df5f1413d0f13 , < c27f744ceefadc7bbeb14233b6abc150ced617d2 (git)
Affected: 067fe038e70f6e64960d26a79c4df5f1413d0f13 , < 058cb6d86b9789377216c936506b346aaa1eb581 (git)
Affected: 067fe038e70f6e64960d26a79c4df5f1413d0f13 , < 37443b3508b8cce6832f8d25cb4550b2f7801f50 (git)
Affected: 067fe038e70f6e64960d26a79c4df5f1413d0f13 , < 4fdfb15e08598711dbf50daf56a33965232daf0e (git)
Affected: 067fe038e70f6e64960d26a79c4df5f1413d0f13 , < bd83ff3bbfb003832481c9bff999d12385f396ae (git)
Affected: 067fe038e70f6e64960d26a79c4df5f1413d0f13 , < 99696a2592bca641eb88cc9a80c90e591afebd0f (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.17
Unaffected: 0 , < 4.17 (semver)
Unaffected: 4.19.247 , ≤ 4.19.* (semver)
Unaffected: 5.4.198 , ≤ 5.4.* (semver)
Unaffected: 5.10.121 , ≤ 5.10.* (semver)
Unaffected: 5.15.46 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "product_status:known_affected": "156",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tracing: Fix potential double free in create_var_ref()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49410.json",
      "version": "3"
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                ]
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}



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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.


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.