CVE-2021-47311
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.3% in the next 30 days (EPSS).
- Severity: 7.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.3% · EPSS, next 30 days
- Weakness
- CWE-416 · Use after free
- Record status
- Analyzed
Affected
- Linux Kernel < 4.9.277
- Linux Kernel < 4.14.241
- Linux Kernel < 4.19.199
- Linux Kernel < 5.4.135
- Linux Kernel < 5.10.53
- Linux Kernel < 5.13.5
- Linux Kernel 5.14
Attack profile CVSS 3.1 · 7.8
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-47311.md and follow it. Check whether this project is affected by CVE-2021-47311. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7
- https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048c
- https://git.kernel.org/stable/c/4d04a42b926e682140776e54188f4a44f1f01a81
- https://git.kernel.org/stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839
- https://git.kernel.org/stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4
- https://git.kernel.org/stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2d
- https://git.kernel.org/stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833
- https://git.kernel.org/stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7
- https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048c
- https://git.kernel.org/stable/c/4d04a42b926e682140776e54188f4a44f1f01a81
References
- https://git.kernel.org/stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7
- https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048c
- https://git.kernel.org/stable/c/4d04a42b926e682140776e54188f4a44f1f01a81
- https://git.kernel.org/stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839
- https://git.kernel.org/stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4
- https://git.kernel.org/stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2d
- https://git.kernel.org/stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833
- https://git.kernel.org/stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7
- https://git.kernel.org/stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048c
- https://git.kernel.org/stable/c/4d04a42b926e682140776e54188f4a44f1f01a81
- https://git.kernel.org/stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839
- https://git.kernel.org/stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4
- https://git.kernel.org/stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2d
- https://git.kernel.org/stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833