CVE-2021-47311
high
CVSS v3
—
VIR risk
8.0
Description
In the Linux kernel, the following vulnerability has been resolved: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot be used after free_netdev() call. Using adpt after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rocky | 8 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 5.14.6-1 |
| debian | bullseye | fixed | 5.10.70-1 |
| debian | forky | fixed | 5.14.6-1 |
| debian | sid | fixed | 5.14.6-1 |
| debian | trixie | fixed | 5.14.6-1 |
| almalinux | 8 | fixed | kernel-rt-core-4.18.0-553.8.1.rt7.349.el8_10.x86_64.rpm |
References
- https://errata.rockylinux.org/RXSA-2024:4211
- https://errata.rockylinux.org/RLSA-2024:4352
- https://errata.rockylinux.org/RLSA-2024:4211
- https://www.suse.com/security/cve/CVE-2021-47311.html
- https://security-tracker.debian.org/tracker/CVE-2021-47311
- https://access.redhat.com/errata/RHSA-2024:4211
- https://bugzilla.redhat.com/1918601
- https://bugzilla.redhat.com/2248122
- https://bugzilla.redhat.com/2258875
- https://bugzilla.redhat.com/2265517
- https://bugzilla.redhat.com/2265519
- https://bugzilla.redhat.com/2265520
- https://bugzilla.redhat.com/2265800
- https://bugzilla.redhat.com/2266408
- https://bugzilla.redhat.com/2266831
- https://bugzilla.redhat.com/2267513
- https://bugzilla.redhat.com/2267518
- https://bugzilla.redhat.com/2267730
- https://bugzilla.redhat.com/2270093
- https://bugzilla.redhat.com/2271680
- https://bugzilla.redhat.com/2272692
- https://bugzilla.redhat.com/2272829
- https://bugzilla.redhat.com/2273204
- https://bugzilla.redhat.com/2273278
- https://bugzilla.redhat.com/2273423
💬 Discuss CVE-2021-47311 on VIR Community →
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.