Riskcovery

CVE-2021-47137

net: lantiq: fix memory corruption in RX ring

State
Published
Severity
9.8 Critical
Published
Mar 25, 2024
Updated
Aug 5, 2026
Reserved
Mar 4, 2024

Read the record on cve.org

Description

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

net: lantiq: fix memory corruption in RX ring

In a situation where memory allocation or dma mapping fails, an invalid address is programmed into the descriptor. This can lead to memory corruption. If the memory allocation fails, DMA should reuse the previous skb and mapping and drop the packet. This patch also increments rx drop counter.

Scores

CVSSScoreVectorSource
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCISA-ADP

Weaknesses

  • CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

ProductVersions
LinuxLinux
  • fe1a56420cf2ec28c8eceef672b87de0bbe1a260 to before 8bb1077448d43a871ed667520763e3b9f9b7975dAffected
  • fe1a56420cf2ec28c8eceef672b87de0bbe1a260 to before 5ac72351655f8b033a2935646f53b7465c903418Affected
  • fe1a56420cf2ec28c8eceef672b87de0bbe1a260 to before 46dd4abced3cb2c912916f4a5353e0927db0c4a2Affected
  • fe1a56420cf2ec28c8eceef672b87de0bbe1a260 to before c7718ee96dbc2f9c5fc3b578abdf296dd44b9c20Affected
LinuxLinux
  • 4.20Affected
  • before 4.20Not affected
  • 5.4.124 through 5.4.*Not affected
  • 5.10.42 through 5.10.*Not affected
  • 5.12.9 through 5.12.*Not affected
  • 5.13 and laterNot affected

References

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