CVE-2021-47443

NFC: digital: fix possible memory leak in digital_tg_listen_mdaa()

MEDIUM
5.5
CVSS Score
Published: May 22, 2024 at 06:19 AM UTC
Updated: June 17, 2026 at 04:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() 'params' is allocated in digital_tg_listen_mdaa(), but not free when digital_send_cmd() failed, which will cause memory leak. Fix it by freeing 'params' if digital_send_cmd() return failed.

Affected

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

3.13 ≤ v < 4.14.2523.13 ≤ v < 4.19.2133.13 ≤ v < 4.4.2903.13 ≤ v < 4.9.2883.13 ≤ v < 5.10.753.13 ≤ v < 5.14.143.13 ≤ v < 5.153.13 ≤ v < 5.4.1554.10 ≤ v < 4.14.2524.15 ≤ v < 4.19.2134.20 ≤ v < 5.4.1554.5 ≤ v < 4.9.2885.11 ≤ v < 5.14.145.5 ≤ v < 5.10.751c7a4c24fbfd99442cc6e14dc80fcb00f118e8b85.15 rc15.15 rc25.15 rc35.15 rc45.15 rc5
Vendor states this is fixed in 3f2960b39f22e26cf8addae93c3f5884d1c183c9 (fixed)
Vendor states this is fixed in 429054ec51e648d241a7e0b465cf44f6633334c5 (fixed)
Vendor states this is fixed in 564249219e5b5673a8416b5181875d828c3f1e8c (fixed)
Vendor states this is fixed in 58e7dcc9ca29c14e44267a4d0ea61e3229124907 (fixed)
Vendor states this is fixed in 7ab488d7228a9dceb2456867f1f0919decf6efed (fixed)
Vendor states this is fixed in 9881b0c860649f27ef2565deef011e516390f416 (fixed)
Vendor states this is fixed in a67d47e32c91e2b10402cb8c081774cbf08edb2e (fixed)
Vendor states this is fixed in b7b023e6ff567e991c31cd425b0e1d16779c938b (fixed)
Vendor states this is fixed in 3.13 (unaffected)
Vendor states this is fixed in 4.14.252 (unaffected)
Vendor states this is fixed in 4.19.213 (unaffected)
Vendor states this is fixed in 4.4.290 (unaffected)
Vendor states this is fixed in 4.9.288 (unaffected)
Vendor states this is fixed in 5.10.75 (unaffected)
Vendor states this is fixed in 5.14.14 (unaffected)
Vendor states this is fixed in 5.15 (unaffected)
Vendor states this is fixed in 5.4.155 (unaffected)

References (8)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/3f2960b39f22e26cf8addae93c3f5884d1c183c9
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/429054ec51e648d241a7e0b465cf44f6633334c5
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/564249219e5b5673a8416b5181875d828c3f1e8c
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/58e7dcc9ca29c14e44267a4d0ea61e3229124907
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7ab488d7228a9dceb2456867f1f0919decf6efed
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9881b0c860649f27ef2565deef011e516390f416
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a67d47e32c91e2b10402cb8c081774cbf08edb2e
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b7b023e6ff567e991c31cd425b0e1d16779c938b

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-401

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