net: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak
Summary
| CVE | CVE-2026-43041 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-01 15:16:50 UTC |
| Updated | 2026-05-01 15:24:14 UTC |
| Description | 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/[email protected]/T/ |
Risk And Classification
EPSS: 0.000240000 probability, percentile 0.068060000 (date 2026-05-05)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 5fdeb0d372ab33b4175043a2a4a1730239a217f1 f2dd9aaf6e2861337f5835f877a5b2becaf4b015 git | Not specified |
| CNA | Linux | Linux | affected 5fdeb0d372ab33b4175043a2a4a1730239a217f1 4b75ff0aedd6ade1018ad4a3a9d8336794e36e42 git | Not specified |
| CNA | Linux | Linux | affected 5fdeb0d372ab33b4175043a2a4a1730239a217f1 ff134cc43972d7ddceff8cfd36cf6b9eaafc00b3 git | Not specified |
| CNA | Linux | Linux | affected 5fdeb0d372ab33b4175043a2a4a1730239a217f1 0fda873092b541bb5a9b87d728a2429f863f8cfa git | Not specified |
| CNA | Linux | Linux | affected 5fdeb0d372ab33b4175043a2a4a1730239a217f1 69402908e277dd164bf8d7c8fd0513c0fac28e9e git | Not specified |
| CNA | Linux | Linux | affected 5fdeb0d372ab33b4175043a2a4a1730239a217f1 f2664bc4f0f356f17c2094587a2b3665e3867e44 git | Not specified |
| CNA | Linux | Linux | affected 5fdeb0d372ab33b4175043a2a4a1730239a217f1 5d2249eefaca59908fe3c264b8eca526424dcfbe git | Not specified |
| CNA | Linux | Linux | affected 5fdeb0d372ab33b4175043a2a4a1730239a217f1 2428083101f6883f979cceffa76cd8440751ffe6 git | Not specified |
| CNA | Linux | Linux | affected 5.6 | Not specified |
| CNA | Linux | Linux | unaffected 5.6 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.253 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.203 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.168 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.134 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.81 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.22 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.12 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/f2dd9aaf6e2861337f5835f877a5b2becaf4b015 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/5d2249eefaca59908fe3c264b8eca526424dcfbe | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/69402908e277dd164bf8d7c8fd0513c0fac28e9e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/f2664bc4f0f356f17c2094587a2b3665e3867e44 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/ff134cc43972d7ddceff8cfd36cf6b9eaafc00b3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/2428083101f6883f979cceffa76cd8440751ffe6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4b75ff0aedd6ade1018ad4a3a9d8336794e36e42 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/0fda873092b541bb5a9b87d728a2429f863f8cfa | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.