CVE-2024-47739

Summary

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

padata: use integer wrap around to prevent deadlock on seq_nr overflow

When submitting more than 2^32 padata objects to padata_do_serial, the current sorting implementation incorrectly sorts padata objects with overflowed seq_nr, causing them to be placed before existing objects in the reorder list. This leads to a deadlock in the serialization process as padata_find_next cannot match padata->seq_nr and pd->processed because the padata instance with overflowed seq_nr will be selected next.

To fix this, we use an unsigned integer wrap around to correctly sort padata objects in scenarios with integer overflow.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxbfde23ce200e6d33291d29b9b8b60cc2f30f0805 < 46c4079460f4dcaf445860679558eedef4e1bc91affected
LinuxLinuxbfde23ce200e6d33291d29b9b8b60cc2f30f0805 < 72164d5b648951684b1a593996b37a6083c61d7daffected
LinuxLinuxbfde23ce200e6d33291d29b9b8b60cc2f30f0805 < ab205e1c3846326f162180e56825b4ba38ce9c30affected
LinuxLinuxbfde23ce200e6d33291d29b9b8b60cc2f30f0805 < 1b8cf11b3ca593a8802a51802cd0c28c38501428affected
LinuxLinuxbfde23ce200e6d33291d29b9b8b60cc2f30f0805 < 9e279e6c1f012b82628b89e1b9c65dbefa8ca25aaffected
LinuxLinuxbfde23ce200e6d33291d29b9b8b60cc2f30f0805 < 1bd712de96ad7167fe0d608e706cd60587579f16affected
LinuxLinuxbfde23ce200e6d33291d29b9b8b60cc2f30f0805 < 9a22b2812393d93d84358a760c347c21939029a6affected
LinuxLinux5.4affected
LinuxLinux0 < 5.4unaffected
LinuxLinux5.10.227 <= 5.10.*unaffected
LinuxLinux5.15.168 <= 5.15.*unaffected
LinuxLinux6.1.113 <= 6.1.*unaffected
LinuxLinux6.6.54 <= 6.6.*unaffected
LinuxLinux6.10.13 <= 6.10.*unaffected
LinuxLinux6.11.2 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References