CVE-2024-36020

Summary

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

i40e: fix vf may be used uninitialized in this function warning

To fix the regression introduced by commit 52424f974bc5, which causes servers hang in very hard to reproduce conditions with resets races. Using two sources for the information is the root cause. In this function before the fix bumping v didn't mean bumping vf pointer. But the code used this variables interchangeably, so stale vf could point to different/not intended vf.

Remove redundant "v" variable and iterate via single VF pointer across whole function instead to guarantee VF pointer validity.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux76ed715836c6994bac29d9638e9314e6e3b08651 < cc9cd02dd9e8b7764ea9effb24f4f1dd73d1b23daffected
LinuxLinuxe88c2a1e28c5475065563d66c07ca879a9afbd07 < 9dcf0fcb80f6aeb01469e3c957f8d4c97365450aaffected
LinuxLinux9abae363af5ced6adbf04c14366289540281fb26 < b8e82128b44fa40bf99a50b919488ef361e1683caffected
LinuxLinuxc39de3ae5075ea5f78e097cb5720d4e52d5caed9 < 951d2748a2a8242853abc3d0c153ce4bf8faad31affected
LinuxLinux52424f974bc53c26ba3f00300a00e9de9afcd972 < 3e89846283f3cf7c7a8e28b342576fd7c561d2baaffected
LinuxLinux52424f974bc53c26ba3f00300a00e9de9afcd972 < 0dcf573f997732702917af1563aa2493dc772fc0affected
LinuxLinux52424f974bc53c26ba3f00300a00e9de9afcd972 < 06df7618f591b2dc43c59967e294d7b9fc8675b6affected
LinuxLinux52424f974bc53c26ba3f00300a00e9de9afcd972 < f37c4eac99c258111d414d31b740437e1925b8e8affected
LinuxLinux02f949747e6fb767b29f7931d4bbf40911684e7aaffected
LinuxLinux4.19.264 < 4.19.312affected
LinuxLinux5.4.223 < 5.4.274affected
LinuxLinux5.10.153 < 5.10.215affected
LinuxLinux5.15.77 < 5.15.154affected
LinuxLinux6.0.7 < 6.1affected
LinuxLinux6.1affected
LinuxLinux0 < 6.1unaffected
LinuxLinux4.19.312 <= 4.19.*unaffected
LinuxLinux5.4.274 <= 5.4.*unaffected
LinuxLinux5.10.215 <= 5.10.*unaffected
LinuxLinux5.15.154 <= 5.15.*unaffected
LinuxLinux6.1.85 <= 6.1.*unaffected
LinuxLinux6.6.26 <= 6.6.*unaffected
LinuxLinux6.8.5 <= 6.8.*unaffected
LinuxLinux6.9 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

Additional References

References