What is CVE-2021-47137?

CVE-2021-47137 is a critical-severity vulnerability in Linux, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 9.8/10. Published 2024-03-25.

How severe is CVE-2021-47137?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Resource exhaustion in Linux

CVE-2021-47137

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.

EPSS: 0.002 (14.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions fe1a56420cf2ec28c8eceef672b87de0bbe1a260, 4.20, 0
Linux Linux_kernel — versions 5.13

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2021-47137?: CVE-2021-47137 is a critical-severity vulnerability in Linux, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 9.8/10. Published 2024-03-25.
How severe is CVE-2021-47137?: Critical severity. CVSS v3 base score is 9.8 out of 10.