Use After Free Affecting kernel-doc package, versions <0:4.18.0-477.64.1.el8_8
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDOC-7557091
- published 24 Jul 2024
- disclosed 21 May 2024
Introduced: 21 May 2024
CVE-2021-47311 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-doc to version 0:4.18.0-477.64.1.el8_8 or higher.
This issue was patched in RHSA-2024:4740.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-doc package and not the kernel-doc package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2021-47311
- 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