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CVE-2026-98494

Linux: net: atl1: fix soft lockup on out-of-range cmb_tpd_next_to_clean read

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 10% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in5d7ac337d37cb97d77e4c910d37746694b606661Also 6ab9f61ca851f02ae4398cebaf00735a22e1d6ca, 632cd7b81cb7bab36112f02eb2ee7f7cc1214fb1 and 4 moreCVE List
Published18 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 5d7ac337d37cb97d77e4c910d37746694b606661LinuxCVE List
  • 6ab9f61ca851f02ae4398cebaf00735a22e1d6caLinuxCVE List
  • 632cd7b81cb7bab36112f02eb2ee7f7cc1214fb1LinuxCVE List
  • 79e2447b11322c27ef9ac423be0a94efc7691f02LinuxCVE List
  • 0f573b0576252d44fb27ab8470ea873bc6408ef3LinuxCVE List
  • 6285919d4c06254d257d24dc980f6332e1984a82LinuxCVE List
Show all 7 fixed versions
  • 43e746821f5f5afbbf68e388bf9fbe221e03bfcaLinuxCVE 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: atl1: fix soft lockup on out-of-range cmb_tpd_next_to_clean read

Same issue as atl1c (see the first commit in this series, "net: atl1c: fix soft lockup on out-of-range tpd_cons read"): the hardware can report an out-of-range cmb_tpd_next_to_clean (seen as 0xffff) while the PCIe link/MAC is resetting. An out-of-range value can never be reached and the loop below would spin forever. Treat it as "nothing new to clean" instead.

Text from CVE List

Affected versions 18

  • Linuxaffected: f3cc28c797604fa1cda4aef3f250f465de54a0ca before 5d7ac337d37cb97d77e4c910d37746694b606661CVE List
  • Linuxaffected: f3cc28c797604fa1cda4aef3f250f465de54a0ca before c55e51d5899e80f9593b26985ed0b89e0c828a5eCVE List
  • Linuxaffected: f3cc28c797604fa1cda4aef3f250f465de54a0ca before 6ab9f61ca851f02ae4398cebaf00735a22e1d6caCVE List
  • Linuxaffected: f3cc28c797604fa1cda4aef3f250f465de54a0ca before 632cd7b81cb7bab36112f02eb2ee7f7cc1214fb1CVE List
  • Linuxaffected: f3cc28c797604fa1cda4aef3f250f465de54a0ca before 79e2447b11322c27ef9ac423be0a94efc7691f02CVE List
  • Linuxaffected: f3cc28c797604fa1cda4aef3f250f465de54a0ca before 0f573b0576252d44fb27ab8470ea873bc6408ef3CVE List
  • Linuxaffected: f3cc28c797604fa1cda4aef3f250f465de54a0ca before 6285919d4c06254d257d24dc980f6332e1984a82CVE List
  • Linuxaffected: f3cc28c797604fa1cda4aef3f250f465de54a0ca before 43e746821f5f5afbbf68e388bf9fbe221e03bfcaCVE List
  • Linuxaffected: 2.6.21CVE List
  • Linuxunaffected: all versions before 2.6.21CVE 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: 6.12.112 through 6.12.*CVE List
  • Linuxunaffected: 6.18.55 through 6.18.*CVE List
  • Linuxunaffected: 7.2.9 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 8