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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.60% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/46dd4abced3cb2c912916f4a5353e0927db0c4a2Patch
- https://git.kernel.org/stable/c/5ac72351655f8b033a2935646f53b7465c903418Patch
- https://git.kernel.org/stable/c/8bb1077448d43a871ed667520763e3b9f9b7975dPatch
- https://git.kernel.org/stable/c/c7718ee96dbc2f9c5fc3b578abdf296dd44b9c20Patch
- https://git.kernel.org/stable/c/46dd4abced3cb2c912916f4a5353e0927db0c4a2Patch
- https://git.kernel.org/stable/c/5ac72351655f8b033a2935646f53b7465c903418Patch
- https://git.kernel.org/stable/c/8bb1077448d43a871ed667520763e3b9f9b7975dPatch
- https://git.kernel.org/stable/c/c7718ee96dbc2f9c5fc3b578abdf296dd44b9c20Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.