5.5

CVE-2026-43041

net: qrtr: replace qrtr_tx_flow radix_tree with xarray to fix memory leak

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/
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.6 < 5.10.253
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.203
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.168
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.134
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.81
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.22
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.12
Linux ≫ Linux Kernel Version7.0 Updaterc1
Linux ≫ Linux Kernel Version7.0 Updaterc2
Linux ≫ Linux Kernel Version7.0 Updaterc3
Linux ≫ Linux Kernel Version7.0 Updaterc4
Linux ≫ Linux Kernel Version7.0 Updaterc5
Linux ≫ Linux Kernel Version7.0 Updaterc6
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.11% 0.018
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

https://git.kernel.org/stable/c/f2dd9aaf6e2861337f5835f877a5b2becaf4b015
Patch
https://git.kernel.org/stable/c/4b75ff0aedd6ade1018ad4a3a9d8336794e36e42
Patch
https://git.kernel.org/stable/c/ff134cc43972d7ddceff8cfd36cf6b9eaafc00b3
Patch
https://git.kernel.org/stable/c/0fda873092b541bb5a9b87d728a2429f863f8cfa
Patch
https://git.kernel.org/stable/c/69402908e277dd164bf8d7c8fd0513c0fac28e9e
Patch
https://git.kernel.org/stable/c/f2664bc4f0f356f17c2094587a2b3665e3867e44
Patch
https://git.kernel.org/stable/c/5d2249eefaca59908fe3c264b8eca526424dcfbe
Patch
https://git.kernel.org/stable/c/2428083101f6883f979cceffa76cd8440751ffe6
Patch