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CVE-2021-47137— net: lantiq: fix memory corruption in RX ring

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于无效地址被编程到描述符中，这可以导致内存损坏。

CVSS 9.8 · Critical EPSS 0.60% · P47

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux fe1a56420cf2ec28c8eceef672b87de0bbe1a260< 8bb1077448d43a871ed667520763e3b9f9b7975d affected
fe1a56420cf2ec28c8eceef672b87de0bbe1a260< 5ac72351655f8b033a2935646f53b7465c903418 affected
fe1a56420cf2ec28c8eceef672b87de0bbe1a260< 46dd4abced3cb2c912916f4a5353e0927db0c4a2 affected
fe1a56420cf2ec28c8eceef672b87de0bbe1a260< c7718ee96dbc2f9c5fc3b578abdf296dd44b9c20 affected
4.20 affected
< 4.20 unaffected
5.4.124≤ 5.4.* unaffected
5.10.42≤ 5.10.* unaffected
… +2 more rows
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I. Basic Information for CVE-2021-47137

Vulnerability Information
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Vulnerability Title
net: lantiq: fix memory corruption in RX ring
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于无效地址被编程到描述符中，这可以导致内存损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux fe1a56420cf2ec28c8eceef672b87de0bbe1a260 ~ 8bb1077448d43a871ed667520763e3b9f9b7975d -
Linux Linux 4.20 -

II. Public POCs for CVE-2021-47137

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III. Intelligence Information for CVE-2021-47137

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Other References for CVE-2021-47137 (3)

Same Patch Batch · Linux · 2024-03-25 · 40 CVEs total

CVE-2021-47168 9.8 CRITICAL NFS: fix an incorrect limit in filelayout_decode_layout()
CVE-2021-47162 9.8 CRITICAL tipc: skb_linearize the head skb when reassembling msgs
CVE-2021-47136 8.6 HIGH net: zero-initialize tc skb extension on allocation
CVE-2021-47160 8.1 HIGH net: dsa: mt7530: fix VLAN traffic leaks
CVE-2021-47163 7.8 HIGH tipc: wait and exit until all work queues are done
CVE-2021-47158 7.8 HIGH net: dsa: sja1105: add error handling in sja1105_setup()
CVE-2021-47153 7.8 HIGH i2c: i801: Don't generate an interrupt on bus reset
CVE-2021-47152 7.8 HIGH mptcp: fix data stream corruption
CVE-2021-47159 7.8 HIGH net: dsa: fix a crash if ->get_sset_count() fails
CVE-2021-47148 7.8 HIGH octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()
CVE-2021-47175 7.8 HIGH net/sched: fq_pie: fix OOB access in the traffic path
CVE-2021-47142 7.8 HIGH drm/amdgpu: Fix a use-after-free
CVE-2021-47178 7.5 HIGH scsi: target: core: Avoid smp_processor_id() in preemptible code
CVE-2021-47179 7.5 HIGH NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
CVE-2021-47171 net: usb: fix memory leak in smsc75xx_bind
CVE-2021-47169 serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'
CVE-2021-47167 NFS: Fix an Oopsable condition in __nfs_pageio_add_request()
CVE-2021-47170 USB: usbfs: Don't WARN about excessively large memory allocations
CVE-2021-47161 spi: spi-fsl-dspi: Fix a resource leak in an error handling path
CVE-2021-47172 iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers

Showing top 20 of 40 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47137

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