CVE-2021-47571

staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()

HIGH
7.8
CVSS Score
Published: May 24, 2024 at 03:12 PM UTC
Updated: June 17, 2026 at 04:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

3.2 ≤ v < 4.14.2573.2 ≤ v < 4.19.2193.2 ≤ v < 4.4.2943.2 ≤ v < 4.9.2923.2 ≤ v < 5.10.833.2 ≤ v < 5.15.63.2 ≤ v < 5.163.2 ≤ v < 5.4.1634.10 ≤ v < 4.14.2574.15 ≤ v < 4.19.2194.20 ≤ v < 5.4.1634.5 ≤ v < 4.9.2925.11 ≤ v < 5.15.65.5 ≤ v < 5.10.833.266898177e7e5486dc77a4ba742efa4e2e9e900a4
Vendor states this is fixed in 2e1ec01af2c7139c6a600bbfaea1a018b35094b6 (fixed)
Vendor states this is fixed in 8d0163cec7de995f9eb9c3128c83fb84f0cb1c64 (fixed)
Vendor states this is fixed in 9186680382934b0e7529d3d70dcc0a21d087683b (fixed)
Vendor states this is fixed in b535917c51acc97fb0761b1edec85f1f3d02bda4 (fixed)
Vendor states this is fixed in bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef (fixed)
Vendor states this is fixed in c0ef0e75a858cbd8618b473f22fbca36106dcf82 (fixed)
Vendor states this is fixed in d43aecb694b10db9a4228ce2d38b5ae8de374443 (fixed)
Vendor states this is fixed in e27ee2f607fe6a9b923ef1fc65461c0613c97594 (fixed)
Vendor states this is fixed in 3.2 (unaffected)
Vendor states this is fixed in 4.14.257 (unaffected)
Vendor states this is fixed in 4.19.219 (unaffected)
Vendor states this is fixed in 4.4.294 (unaffected)
Vendor states this is fixed in 4.9.292 (unaffected)
Vendor states this is fixed in 5.10.83 (unaffected)
Vendor states this is fixed in 5.15.6 (unaffected)
Vendor states this is fixed in 5.16 (unaffected)
Vendor states this is fixed in 5.4.163 (unaffected)

References (8)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/2e1ec01af2c7139c6a600bbfaea1a018b35094b6
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8d0163cec7de995f9eb9c3128c83fb84f0cb1c64
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9186680382934b0e7529d3d70dcc0a21d087683b
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b535917c51acc97fb0761b1edec85f1f3d02bda4
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c0ef0e75a858cbd8618b473f22fbca36106dcf82
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d43aecb694b10db9a4228ce2d38b5ae8de374443
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e27ee2f607fe6a9b923ef1fc65461c0613c97594

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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