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CVE-2021-47571— staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()

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_rtl92e_pci_disconnect函数存在内存释放后重用漏洞。

AI Predicted 5.5 Difficulty: Trivial EPSS 0.21% · P12

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 66898177e7e5486dc77a4ba742efa4e2e9e900a4< d43aecb694b10db9a4228ce2d38b5ae8de374443 affected
66898177e7e5486dc77a4ba742efa4e2e9e900a4< 9186680382934b0e7529d3d70dcc0a21d087683b affected
66898177e7e5486dc77a4ba742efa4e2e9e900a4< c0ef0e75a858cbd8618b473f22fbca36106dcf82 affected
66898177e7e5486dc77a4ba742efa4e2e9e900a4< bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef affected
66898177e7e5486dc77a4ba742efa4e2e9e900a4< 2e1ec01af2c7139c6a600bbfaea1a018b35094b6 affected
66898177e7e5486dc77a4ba742efa4e2e9e900a4< 8d0163cec7de995f9eb9c3128c83fb84f0cb1c64 affected
66898177e7e5486dc77a4ba742efa4e2e9e900a4< e27ee2f607fe6a9b923ef1fc65461c0613c97594 affected
66898177e7e5486dc77a4ba742efa4e2e9e900a4< b535917c51acc97fb0761b1edec85f1f3d02bda4 affected
… +10 more rows
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I. Basic Information for CVE-2021-47571

Vulnerability Information
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Vulnerability Title
staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() The free_rtllib() function frees the "dev" pointer so there is use after free on the next line. Re-arrange things to avoid that.
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_rtl92e_pci_disconnect函数存在内存释放后重用漏洞。
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 66898177e7e5486dc77a4ba742efa4e2e9e900a4 ~ d43aecb694b10db9a4228ce2d38b5ae8de374443 -
Linux Linux 3.2 -

II. Public POCs for CVE-2021-47571

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III. Intelligence Information for CVE-2021-47571

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Other References for CVE-2021-47571 (7)

Same Patch Batch · Linux · 2024-05-24 · 72 CVEs total

CVE-2021-47544 9.8 CRITICAL tcp: fix page frag corruption on page fault
CVE-2021-47506 9.8 CRITICAL nfsd: fix use-after-free due to delegation race
CVE-2021-47536 9.8 CRITICAL net/smc: fix wrong list_del in smc_lgr_cleanup_early
CVE-2021-47520 8.8 HIGH can: pch_can: pch_can_rx_normal: fix use after free
CVE-2023-52880 7.8 HIGH tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc
CVE-2021-47505 7.8 HIGH aio: fix use-after-free due to missing POLLFREE handling
CVE-2021-47512 7.8 HIGH net/sched: fq_pie: prevent dismantle issue
CVE-2021-47502 7.8 HIGH ASoC: codecs: wcd934x: handle channel mappping list correctly
CVE-2021-47517 7.8 HIGH ethtool: do not perform operations on net devices being unregistered
CVE-2021-47533 7.8 HIGH drm/vc4: kms: Clear the HVS FIFO commit pointer once done
CVE-2021-47500 7.8 HIGH iio: mma8452: Fix trigger reference couting
CVE-2021-47541 7.8 HIGH net/mlx4_en: Fix an use-after-free bug in mlx4_en_try_alloc_resources()
CVE-2021-47552 7.8 HIGH blk-mq: cancel blk-mq dispatch work in both blk_cleanup_queue and disk_release()
CVE-2021-47551 7.8 HIGH drm/amd/amdkfd: Fix kernel panic when reset failed and been triggered again
CVE-2021-47555 7.8 HIGH net: vlan: fix underflow for the real_dev refcnt
CVE-2021-47561 7.8 HIGH i2c: virtio: disable timeout handling
CVE-2021-47535 7.8 HIGH drm/msm/a6xx: Allocate enough space for GMU registers
CVE-2021-47559 7.5 HIGH net/smc: Fix NULL pointer dereferencing in smc_vlan_by_tcpsk()
CVE-2021-47515 7.5 HIGH seg6: fix the iif in the IPv6 socket control block
CVE-2021-47554 vdpa_sim: avoid putting an uninitialized iova_domain

Showing top 20 of 72 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47571

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