UBUNTU-CVE-2023-0459
Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend upgrading beyond commit 74e19ef0ff8061ef55957c3abd71614ef0f42f47
02 / AFFECTED SOFTWARE
Affected packages
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03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend upgrading beyond commit 74e19ef0ff8061ef55957c3abd71614ef0f42f47
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/74e19ef0ff8061ef55957c3abd71614ef0f42f47
- https://github.com/google/security-research/security/advisories/GHSA-m7j5-797w-vmrh
- https://ubuntu.com/security/CVE-2023-0459
- https://ubuntu.com/security/notices/USN-6079-1
- https://ubuntu.com/security/notices/USN-6080-1
- https://ubuntu.com/security/notices/USN-6081-1
- https://ubuntu.com/security/notices/USN-6084-1
- https://ubuntu.com/security/notices/USN-6085-1
- https://ubuntu.com/security/notices/USN-6090-1
- https://ubuntu.com/security/notices/USN-6091-1
- https://ubuntu.com/security/notices/USN-6092-1
- https://ubuntu.com/security/notices/USN-6094-1
- https://ubuntu.com/security/notices/USN-6095-1
- https://ubuntu.com/security/notices/USN-6096-1
- https://ubuntu.com/security/notices/USN-6109-1
- https://ubuntu.com/security/notices/USN-6118-1
- https://ubuntu.com/security/notices/USN-6132-1
- https://ubuntu.com/security/notices/USN-6133-1
- https://ubuntu.com/security/notices/USN-6134-1
- https://ubuntu.com/security/notices/USN-6174-1
- https://ubuntu.com/security/notices/USN-6222-1
- https://ubuntu.com/security/notices/USN-6235-1
- https://ubuntu.com/security/notices/USN-6256-1
- https://www.cve.org/CVERecord?id=CVE-2023-0459