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CVE-2021-47101— asix: fix uninit-value in asix_mdio_read()

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P12

Possible ATT&CK Techniques 1AI

T1206

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinuxd9fe64e511144c1ee7d7555b4111f09dde9692ef< d259f621c85949f30cc578cac813b82bb5169f56affected
d9fe64e511144c1ee7d7555b4111f09dde9692ef< 8035b1a2a37a29d8c717ef84fca8fe7278bc9f03affected
4.9affected
< 4.9unaffected
5.15.12≤ 5.15.*unaffected
5.16≤ *unaffected
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I. Basic Information for CVE-2021-47101

Vulnerability Information
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Vulnerability Title
asix: fix uninit-value in asix_mdio_read()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: asix: fix uninit-value in asix_mdio_read() asix_read_cmd() may read less than sizeof(smsr) bytes and in this case smsr will be uninitialized. Fail log: BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497 BUG: KMSAN: uninit-value in asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497 asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497 asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497
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 asix中的 asix_mdio_read() 中的 uninit-value存在安全问题。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux d9fe64e511144c1ee7d7555b4111f09dde9692ef ~ d259f621c85949f30cc578cac813b82bb5169f56 -
LinuxLinux 4.9 -

II. Public POCs for CVE-2021-47101

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III. Intelligence Information for CVE-2021-47101

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Other References for CVE-2021-47101 (2)

Same Patch Batch · Linux · 2024-03-04 · 26 CVEs total

CVE-2021-471079.8 CRITICALNFSD: Fix READDIR buffer overflow
CVE-2021-471039.8 CRITICALinet: fully convert sk->sk_rx_dst to RCU rules
CVE-2021-470827.8 HIGHtun: avoid double free in tun_free_netdev
CVE-2021-470877.8 HIGHtee: optee: Fix incorrect page free bug
CVE-2021-471067.8 HIGHnetfilter: nf_tables: fix use-after-free in nft_set_catchall_destroy()
CVE-2021-470947.8 HIGHKVM: x86/mmu: Don't advance iterator after restart due to yielding
CVE-2021-470997.8 HIGHveth: ensure skb entering GRO are not cloned.
CVE-2021-470837.1 HIGHpinctrl: mediatek: fix global-out-of-bounds issue
CVE-2021-471027.1 HIGHnet: marvell: prestera: fix incorrect structure access
CVE-2021-47095ipmi: ssif: initialize ssif_info->client early
CVE-2021-47108drm/mediatek: hdmi: Perform NULL pointer check for mtk_hdmi_conf
CVE-2021-47105ice: xsk: return xsk buffers back to pool when cleaning the ring
CVE-2021-47104IB/qib: Fix memory leak in qib_user_sdma_queue_pkts()
CVE-2021-47100ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module
CVE-2021-47098hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations
CVE-2021-47097Input: elantech - fix stack out of bound access in elantech_change_report_id()
CVE-2021-47096ALSA: rawmidi - fix the uninitalized user_pversion
CVE-2024-26622tomoyo: fix UAF write bug in tomoyo_write_control()
CVE-2021-47093platform/x86: intel_pmc_core: fix memleak on registration failure
CVE-2021-47092KVM: VMX: Always clear vmx->fail on emulation_required

Showing top 20 of 26 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47101

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