发布于3月6日3月6日 Members Ubuntu: (CVE-2021-47401): linux vulnerability Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 05/21/2024 Created 11/21/2024 Added 11/19/2024 Modified 02/11/2025 Description In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix stack information leak The tty driver name is used also after registering the driver and must specifically not be allocated on the stack to avoid leaking information to user space (or triggering an oops). Drivers should not try to encode topology information in the tty device name but this one snuck in through staging without anyone noticing and another driver has since copied this malpractice. Fixing the ABI is a separate issue, but this at least plugs the security hole. Solution(s) ubuntu-upgrade-linux ubuntu-upgrade-linux-aws ubuntu-upgrade-linux-aws-5-4 ubuntu-upgrade-linux-aws-fips ubuntu-upgrade-linux-aws-hwe ubuntu-upgrade-linux-azure ubuntu-upgrade-linux-azure-4-15 ubuntu-upgrade-linux-azure-5-4 ubuntu-upgrade-linux-azure-fips ubuntu-upgrade-linux-bluefield ubuntu-upgrade-linux-fips ubuntu-upgrade-linux-gcp ubuntu-upgrade-linux-gcp-4-15 ubuntu-upgrade-linux-gcp-5-4 ubuntu-upgrade-linux-gcp-fips ubuntu-upgrade-linux-gkeop ubuntu-upgrade-linux-hwe ubuntu-upgrade-linux-hwe-5-4 ubuntu-upgrade-linux-ibm ubuntu-upgrade-linux-kvm ubuntu-upgrade-linux-oracle ubuntu-upgrade-linux-oracle-5-4 ubuntu-upgrade-linux-raspi ubuntu-upgrade-linux-raspi-5-4 References https://attackerkb.com/topics/cve-2021-47401 CVE - 2021-47401 https://git.kernel.org/linus/a89936cce87d60766a75732a9e7e25c51164f47c https://git.kernel.org/stable/c/0a9c36a2e06a249acbed64e8e0b84637c2ad7575 https://git.kernel.org/stable/c/2725925982dc96a78069cd118ea3d66759bfdad7 https://git.kernel.org/stable/c/5f6a309a699675680df15d9b6d389114515b4426 https://git.kernel.org/stable/c/741ea2670e021350e54f491106bdaa22dc50e6a0 https://git.kernel.org/stable/c/829f13d6079cf7a2465522f39acb43033e9b320d https://git.kernel.org/stable/c/8657158a3b68c85234e6da3d8eae33d6183588b7 https://git.kernel.org/stable/c/a89936cce87d60766a75732a9e7e25c51164f47c https://git.kernel.org/stable/c/acb96e782bad427ca4bb1bd94af660acd1462380 https://www.cve.org/CVERecord?id=CVE-2021-47401 View more
