Bug 2269831 (CVE-2021-47128) - CVE-2021-47128 kernel: bpf, lockdown, audit: Fix buggy SELinux lockdown permission checks
Summary: CVE-2021-47128 kernel: bpf, lockdown, audit: Fix buggy SELinux lockdown permi...
Keywords:
Status: NEW
Alias: CVE-2021-47128
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
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Depends On: 2269833
Blocks: 2269857
TreeView+ depends on / blocked
 
Reported: 2024-03-16 17:57 UTC by Avinash Hanwate
Modified: 2024-04-22 07:13 UTC (History)
51 users (show)

Fixed In Version: kernel 5.10.43, kernel 5.12.10, kernel 5.13
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Description Avinash Hanwate 2024-03-16 17:57:42 UTC 
In the Linux kernel, the following vulnerability has been resolved:

bpf, lockdown, audit: Fix buggy SELinux lockdown permission checks

The Linux kernel CVE team has assigned CVE-2021-47128 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024031512-CVE-2021-47128-bef7@gregkh/T/#u
Comment 1 Avinash Hanwate 2024-03-16 17:58:18 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2269833]
Comment 5 Justin M. Forbes 2024-03-26 16:27:09 UTC 
This was fixed for Fedora with the 5.12.10 stable kernel updates.
Comment 8 Artem Savkov 2024-04-22 07:13:42 UTC 
Hi Alex,

It is not present. The two hits you got from grep just mention it.

First is 9c0ebe52fbe56 ("[security] audit: purge audit_log_string from the intra-kernel audit API"), where 59438b46471a is mentioned as missing in a "Conflict" explanation:
>    Conflicts:
>      - commit 59438b46471a ("security,lockdown,selinux: implement SELinux lockdown")
>        from v5.6-rc1, not backported, omos: would break things, class not  in policy yet

The second is 6b146f48fbdbf ("[security] security: only build lsm_audit if CONFIG_SECURITY=y"). It has 59438b46471a included in "Fixes" tag, but that doesn't mean 59438b46471a is in the tree.
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