What is CVE-2021-47028?

CVE-2021-47028 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 5.8 onward and patched in 5.11.21, 5.12.4 and 5.13. CVE-2021-47028 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47028?

CVE-2021-47028 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2021-47028?

Yes, CVE-2021-47028 has been patched. Fixed versions include 5.11.21, 5.12.4 and 5.13. If you are running Linux kernel 5.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47028 actively exploited?

CVE-2021-47028 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47028

High

In the Linux kernel, the following vulnerability has been resolved: mt76: mt7915: fix txrate reporting Properly check rate_info to fix unexpected reporting. [ 1215.161863] Call trace: [ 1215.164307] cfg80211_calculate_bitrate+0x124/0x200 [cfg80211] [ 1215.170139] ieee80211s_update_metric+0x80/0xc0 [mac80211] [ 1215.175624] ieee80211_tx_status_ext+0x508/0x838 [mac80211] [ 1215.181190] mt7915_mcu_get_rx_rate+0x28c/0x8d0 [mt7915e] [ 1215.186580] mt7915_mac_tx_free+0x324/0x7c0 [mt7915e] [ 1215.191623] mt7915_queue_rx_skb+0xa8/0xd0 [mt7915e] [ 1215.196582] mt76_dma_cleanup+0x7b0/0x11d0 [mt76] [ 1215.201276] __napi_poll+0x38/0xf8 [ 1215.204668] napi_workfn+0x40/0x80 [ 1215.208062] process_one_work+0x1fc/0x390 [ 1215.212062] worker_thread+0x48/0x4d0 [ 1215.215715] kthread+0x120/0x128 [ 1215.218935] ret_from_fork+0x10/0x1c

Package Linux Kernel

Published 2024-02-28

Last modified 2024-12-06

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 5.8 and later are affected. Fixed in 5.11.21, 5.12.4, 5.13 and their respective stable series.

Affected from

≥ 5.8

Fixed in

✓ 5.11.21 5.11.x ✓ 5.12.4 5.12.x ✓ 5.13

References

3 total

Kernel Git
https://git.kernel.org/stable/c/4bd926e5ca88eac4d95eacb806b229f8729bc62e

Patch
Kernel Git
https://git.kernel.org/stable/c/dfc8a71448c7d4fec38fb22bdc8a76d79c14b6da

Patch
Kernel Git
https://git.kernel.org/stable/c/f43b941fd61003659a3f0e039595e5e525917aa8

Patch

Details

CVE ID CVE-2021-47028

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-02-28

Modified 2024-12-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47028?

CVE-2021-47028 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 5.8 onward and has been patched in 5.11.21, 5.12.4 and 5.13. CVE-2021-47028 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47028?

CVE-2021-47028 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2021-47028?

Yes. CVE-2021-47028 has been patched. Fixed versions include 5.11.21, 5.12.4 and 5.13. If you are running Linux kernel 5.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47028 actively exploited?

No. CVE-2021-47028 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.