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CVE-2026-98429

Linux: RDMA/efa: Keep EQ resources alive while IRQ is registered

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)0.21%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3cd652dfcd822af26ba75d6d2d245ea7f73b499eAlso 795eb34bfd8b1ab347adc41a11e4bb97c3ac0ce6, 38871ff47e2a02f8d9a333a65f358d987247b5b0 and 1 moreCVE List
Published14 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 3cd652dfcd822af26ba75d6d2d245ea7f73b499eLinuxCVE List
  • 795eb34bfd8b1ab347adc41a11e4bb97c3ac0ce6LinuxCVE List
  • 38871ff47e2a02f8d9a333a65f358d987247b5b0LinuxCVE List
  • 9ecd3dcbdf1f315aadc049b291f59c79dc478062LinuxCVE 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:

RDMA/efa: Keep EQ resources alive while IRQ is registered

The completion IRQ handler accesses the EQ state and DMA buffer. Its IRQ was registered before that state was initialized, while teardown released the buffer before free_irq() synchronized the handler.

Initialize the EQ without arming it, register the IRQ, and then arm it. Reverse the resource order during teardown by freeing the IRQ before destroying the EQ.

Text from CVE List

Affected versions 14

  • Linuxaffected: 2a152512a155aaf27c3e67834ffafaed9525a7b5 before 3cd652dfcd822af26ba75d6d2d245ea7f73b499eCVE List
  • Linuxaffected: 2a152512a155aaf27c3e67834ffafaed9525a7b5 before c767e2812cac83fef70fb8932c3f0fe97dff9388CVE List
  • Linuxaffected: 2a152512a155aaf27c3e67834ffafaed9525a7b5 before 795eb34bfd8b1ab347adc41a11e4bb97c3ac0ce6CVE List
  • Linuxaffected: 2a152512a155aaf27c3e67834ffafaed9525a7b5 before 38871ff47e2a02f8d9a333a65f358d987247b5b0CVE List
  • Linuxaffected: 2a152512a155aaf27c3e67834ffafaed9525a7b5 before 9ecd3dcbdf1f315aadc049b291f59c79dc478062CVE List
  • Linuxaffected: 2a152512a155aaf27c3e67834ffafaed9525a7b5 before e22a3627b7151754f07f90ea3d1ab6e85f5d93f4CVE List
  • Linuxaffected: 5.16CVE List
  • Linuxunaffected: all versions before 5.16CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.112 through 6.12.*CVE List
  • Linuxunaffected: 6.18.54 through 6.18.*CVE List
  • Linuxunaffected: 7.2.8 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 6