CVE-2024-38586

Summary

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

r8169: Fix possible ring buffer corruption on fragmented Tx packets.

An issue was found on the RTL8125b when transmitting small fragmented packets, whereby invalid entries were inserted into the transmit ring buffer, subsequently leading to calls to dma_unmap_single() with a null address.

This was caused by rtl8169_start_xmit() not noticing changes to nr_frags which may occur when small packets are padded (to work around hardware quirks) in rtl8169_tso_csum_v2().

To fix this, postpone inspecting nr_frags until after any padding has been applied.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux9020845fb5d6bb4876a38fdf1259600e7d9a63d4 < 61c1c98e2607120ce9c3fa1bf75e6da909712b27affected
LinuxLinux9020845fb5d6bb4876a38fdf1259600e7d9a63d4 < b6d21cf40de103d63ae78551098a7c06af8c98ddaffected
LinuxLinux9020845fb5d6bb4876a38fdf1259600e7d9a63d4 < 0c48185a95309556725f818b82120bb74e9c627daffected
LinuxLinux9020845fb5d6bb4876a38fdf1259600e7d9a63d4 < 68222d7b4b72aa321135cd453dac37f00ec41fd1affected
LinuxLinux9020845fb5d6bb4876a38fdf1259600e7d9a63d4 < 078d5b7500d70af2de6b38e226b03f0b932026a6affected
LinuxLinux9020845fb5d6bb4876a38fdf1259600e7d9a63d4 < 54e7a0d111240c92c0f02ceba6eb8f26bf6d6479affected
LinuxLinux9020845fb5d6bb4876a38fdf1259600e7d9a63d4 < c71e3a5cffd5309d7f84444df03d5b72600cc417affected
LinuxLinux5.7affected
LinuxLinux0 < 5.7unaffected
LinuxLinux5.10.221 <= 5.10.*unaffected
LinuxLinux5.15.161 <= 5.15.*unaffected
LinuxLinux6.1.93 <= 6.1.*unaffected
LinuxLinux6.6.33 <= 6.6.*unaffected
LinuxLinux6.8.12 <= 6.8.*unaffected
LinuxLinux6.9.3 <= 6.9.*unaffected
LinuxLinux6.10 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References