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CVE-2021-47138— cxgb4: avoid accessing registers when clearing filters

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，该漏洞源于读取寄存器中的无效值可能会导致内存越界访问。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.24% · P14

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux b1a79360ee862f8ada4798ad2346fa45bb41b527< 0bf49b3c8d8b3a43ce09f1b2db70e5484d31fcdf affected
b1a79360ee862f8ada4798ad2346fa45bb41b527< 02f03883fdb10ad7e66717c70ea163a8d27ae6e7 affected
b1a79360ee862f8ada4798ad2346fa45bb41b527< 285207a558ab456aa7d8aa877ecc7e91fcc51710 affected
b1a79360ee862f8ada4798ad2346fa45bb41b527< 88c380df84fbd03f9b137c2b9d0a44b9f2f553b0 affected
5.2 affected
< 5.2 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-2021-47138

Vulnerability Information
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Vulnerability Title
cxgb4: avoid accessing registers when clearing filters
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cxgb4: avoid accessing registers when clearing filters Hardware register having the server TID base can contain invalid values when adapter is in bad state (for example, due to AER fatal error). Reading these invalid values in the register can lead to out-of-bound memory access. So, fix by using the saved server TID base when clearing filters.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于读取寄存器中的无效值可能会导致内存越界访问。
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 b1a79360ee862f8ada4798ad2346fa45bb41b527 ~ 0bf49b3c8d8b3a43ce09f1b2db70e5484d31fcdf -
Linux Linux 5.2 -

II. Public POCs for CVE-2021-47138

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III. Intelligence Information for CVE-2021-47138

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Other References for CVE-2021-47138 (4)

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

CVE-2021-47137 9.8 CRITICAL net: lantiq: fix memory corruption in RX ring
CVE-2021-47162 9.8 CRITICAL tipc: skb_linearize the head skb when reassembling msgs
CVE-2021-47168 9.8 CRITICAL NFS: fix an incorrect limit in filelayout_decode_layout()
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-2021-47142 7.8 HIGH drm/amdgpu: Fix a use-after-free
CVE-2021-47175 7.8 HIGH net/sched: fq_pie: fix OOB access in the traffic path
CVE-2021-47148 7.8 HIGH octeontx2-pf: fix a buffer overflow in otx2_set_rxfh_context()
CVE-2021-47163 7.8 HIGH tipc: wait and exit until all work queues are done
CVE-2021-47152 7.8 HIGH mptcp: fix data stream corruption
CVE-2021-47153 7.8 HIGH i2c: i801: Don't generate an interrupt on bus reset
CVE-2021-47158 7.8 HIGH net: dsa: sja1105: add error handling in sja1105_setup()
CVE-2021-47159 7.8 HIGH net: dsa: fix a crash if ->get_sset_count() fails
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-2021-47180 NFC: nci: fix memory leak in nci_allocate_device
CVE-2021-47169 serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'
CVE-2021-47170 USB: usbfs: Don't WARN about excessively large memory allocations
CVE-2021-47167 NFS: Fix an Oopsable condition in __nfs_pageio_add_request()
CVE-2021-47171 net: usb: fix memory leak in smsc75xx_bind

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-2021-47138

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