CVE-2026-43041 (GCVE-0-2026-43041)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-01 14:15
VLAI?
Title
net: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak
Summary
In the Linux kernel, the following vulnerability has been resolved: net: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak __radix_tree_create() allocates and links intermediate nodes into the tree one by one. If a subsequent allocation fails, the already-linked nodes remain in the tree with no corresponding leaf entry. These orphaned internal nodes are never reclaimed because radix_tree_for_each_slot() only visits slots containing leaf values. The radix_tree API is deprecated in favor of xarray. As suggested by Matthew Wilcox, migrate qrtr_tx_flow from radix_tree to xarray instead of fixing the radix_tree itself [1]. xarray properly handles cleanup of internal nodes — xa_destroy() frees all internal xarray nodes when the qrtr_node is released, preventing the leak. [1] https://lore.kernel.org/all/20260225071623.41275-1-jiayuan.chen@linux.dev/T/
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 , < f2dd9aaf6e2861337f5835f877a5b2becaf4b015 (git)
Affected: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 , < 4b75ff0aedd6ade1018ad4a3a9d8336794e36e42 (git)
Affected: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 , < ff134cc43972d7ddceff8cfd36cf6b9eaafc00b3 (git)
Affected: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 , < 0fda873092b541bb5a9b87d728a2429f863f8cfa (git)
Affected: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 , < 69402908e277dd164bf8d7c8fd0513c0fac28e9e (git)
Affected: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 , < f2664bc4f0f356f17c2094587a2b3665e3867e44 (git)
Affected: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 , < 5d2249eefaca59908fe3c264b8eca526424dcfbe (git)
Affected: 5fdeb0d372ab33b4175043a2a4a1730239a217f1 , < 2428083101f6883f979cceffa76cd8440751ffe6 (git)
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    Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.134 , ≤ 6.6.* (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
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    "dateReserved": "2026-05-01T14:12:55.978Z",
    "dateUpdated": "2026-05-01T14:15:38.112Z",
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  }
}


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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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