01 Record

CVE-2021-47388

mac80211: fix use-after-free in CCMP/GCMP RX

HighPUBLISHEDCNA: Linux

CNA base score8.8 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

mac80211: fix use-after-free in CCMP/GCMP RX

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.34% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 26.7% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2024-05-21 15:03Z2 YR AGO

Last updated

2026-08-05 08:47Z1 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

2423f680d6a09723c5f6a3fd99d3cb392a9299841b09f2fe485ee73720b8e01c

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux608b0a2ae928a74a2f89e02227339dd79cdb63cf to < 447d001b875d0e7f211c4ba004916028da994258, d0f613fe6de344dc17ba04a88921a2094c13d3fa to < 31de381aef0ab1b342f62485118dc8a19363dc78, a9b57952fed41556c950a92123086724eaf11919 to < f556e1d6fb9f2923a9a36f3df638c7d79ba09dbb, 0f716b48ed25503e6961f4b5b40ece36f7e4ed26 to < 3d5d629c99c468458022e9b381789de3595bf4dd, c8b3a6150dc8ac78d5fdd5fbdfc4806249ef8b2c to < 50149e0866a82cef33e680ee68dc380a5bc75d32, e64ea0597050157f926ac2ba9b478a44ee5be945 to < 57de2dcb18742dc2860861c9f496da7d42b67da0, bf30ca922a0c0176007e074b0acc77ed345e9990 to < 27d3eb5616ee2c0a3b30c3fa34813368ed1f3dc9, bf30ca922a0c0176007e074b0acc77ed345e9990 to < 94513069eb549737bcfc3d988d6ed4da948a2de8, 1f0bf30c01d3f4de7d6c5e27b102a808c5646676, 4.4.271 to < 4.4.286, 4.9.271 to < 4.9.285, 4.14.235 to < 4.14.249, 4.19.193 to < 4.19.209, 5.4.124 to < 5.4.151, 5.10.42 to < 5.10.71, 5.12.9 to < 5.13, 5.13—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/447d001b875d0e7f211c4ba004916028da994258
git.kernel.orghttps://git.kernel.org/stable/c/31de381aef0ab1b342f62485118dc8a19363dc78
git.kernel.orghttps://git.kernel.org/stable/c/f556e1d6fb9f2923a9a36f3df638c7d79ba09dbb
git.kernel.orghttps://git.kernel.org/stable/c/3d5d629c99c468458022e9b381789de3595bf4dd
git.kernel.orghttps://git.kernel.org/stable/c/50149e0866a82cef33e680ee68dc380a5bc75d32
git.kernel.orghttps://git.kernel.org/stable/c/57de2dcb18742dc2860861c9f496da7d42b67da0
git.kernel.orghttps://git.kernel.org/stable/c/27d3eb5616ee2c0a3b30c3fa34813368ed1f3dc9
git.kernel.orghttps://git.kernel.org/stable/c/94513069eb549737bcfc3d988d6ed4da948a2de8

01 Record index

CVE-2021-47388

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47388

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References