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CVE-2026-97440

Linux: net: qrtr: fix node refcount leak on ctrl packet alloc failure

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in78d066ecac9ce50441d4affae0df2093c4c3e62eAlso 477353db343663d5502ca442c6de785d2f23f273, 9d969c98732a4d42212ec580dd5bbad53f246103 and 1 moreCVE List
Published24 Sep 2026Updated 3 Oct 2026CVE List

What fixes it

  • 78d066ecac9ce50441d4affae0df2093c4c3e62eLinuxCVE List
  • 477353db343663d5502ca442c6de785d2f23f273LinuxCVE List
  • 9d969c98732a4d42212ec580dd5bbad53f246103LinuxCVE List
  • 3b09ff54114566864eea59020f6b69c5bb325b9dLinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

In the Linux kernel, the following vulnerability has been resolved:

net: qrtr: fix node refcount leak on ctrl packet alloc failure

qrtr_send_resume_tx() calls qrtr_node_lookup() which takes a reference on the returned node. If the subsequent call to qrtr_alloc_ctrl_packet() fails due to memory allocation failure, the function returns -ENOMEM without calling qrtr_node_release() to release the node reference.

Add qrtr_node_release(node) before returning on the allocation failure path to properly release the reference.

Text from CVE List

Affected versions 16

  • Linuxaffected: cb6530b99fafea6c0636c4640bd21301d12cdbc9 before 78d066ecac9ce50441d4affae0df2093c4c3e62eCVE List
  • Linuxaffected: cb6530b99fafea6c0636c4640bd21301d12cdbc9 before f3e90fbcd2d5ec1632bc2e8cdd1218f56bcb5fcfCVE List
  • Linuxaffected: cb6530b99fafea6c0636c4640bd21301d12cdbc9 before c3515740174b778d0ee44acc477b51a6478da6b8CVE List
  • Linuxaffected: cb6530b99fafea6c0636c4640bd21301d12cdbc9 before f76a39c45182d9137e053081cee9f2c197404ce6CVE List
  • Linuxaffected: cb6530b99fafea6c0636c4640bd21301d12cdbc9 before 477353db343663d5502ca442c6de785d2f23f273CVE List
  • Linuxaffected: cb6530b99fafea6c0636c4640bd21301d12cdbc9 before 9d969c98732a4d42212ec580dd5bbad53f246103CVE List
  • Linuxaffected: cb6530b99fafea6c0636c4640bd21301d12cdbc9 before 3b09ff54114566864eea59020f6b69c5bb325b9dCVE List
  • Linuxaffected: 5.6CVE List
  • Linuxunaffected: all versions before 5.6CVE List
  • Linuxunaffected: 5.10.271 through 5.10.*CVE List
  • Linuxunaffected: 5.15.222 through 5.15.*CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2CVE List

References 7