CVE-2023-52628

Summary

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

netfilter: nftables: exthdr: fix 4-byte stack OOB write

If priv->len is a multiple of 4, then dst[len / 4] can write past the destination array which leads to stack corruption.

This construct is necessary to clean the remainder of the register in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does.

The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added.

Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).

Affected Software

VendorProductVersion RangeStatus
LinuxLinux49499c3e6e18b7677a63316f3ff54a16533dc28f < 28a97c43c9e32f437ebb8d6126f9bb7f3ca9521aaffected
LinuxLinux49499c3e6e18b7677a63316f3ff54a16533dc28f < cf39c4f77a773a547ac2bcf30ecdd303bb0c80cbaffected
LinuxLinux49499c3e6e18b7677a63316f3ff54a16533dc28f < a7d86a77c33ba1c357a7504341172cc1507f0698affected
LinuxLinux49499c3e6e18b7677a63316f3ff54a16533dc28f < 1ad7b189cc1411048434e8595ffcbe7873b71082affected
LinuxLinux49499c3e6e18b7677a63316f3ff54a16533dc28f < d9ebfc0f21377690837ebbd119e679243e0099ccaffected
LinuxLinux49499c3e6e18b7677a63316f3ff54a16533dc28f < c8f292322ff16b9a2272a67de396c09a50e09dceaffected
LinuxLinux49499c3e6e18b7677a63316f3ff54a16533dc28f < fd94d9dadee58e09b49075240fe83423eb1dcd36affected
LinuxLinux4.1affected
LinuxLinux0 < 4.1unaffected
LinuxLinux4.19.316 <= 4.19.*unaffected
LinuxLinux5.4.279 <= 5.4.*unaffected
LinuxLinux5.10.198 <= 5.10.*unaffected
LinuxLinux5.15.132 <= 5.15.*unaffected
LinuxLinux6.1.54 <= 6.1.*unaffected
LinuxLinux6.5.4 <= 6.5.*unaffected
LinuxLinux6.6 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

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

CVE Program Container

Additional References

References