Resource Injection Affecting kernel-rt-selftests-internal package, versions *
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTSELFTESTSINTERNAL-7099442
- published 24 May 2024
- disclosed 21 May 2024
Introduced: 21 May 2024
CVE-2021-47241 Open this link in a new tabHow to fix?
There is no fixed version for Centos:8 kernel-rt-selftests-internal.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-selftests-internal package and not the kernel-rt-selftests-internal package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
ethtool: strset: fix message length calculation
Outer nest for ETHTOOL_A_STRSET_STRINGSETS is not accounted for. This may result in ETHTOOL_MSG_STRSET_GET producing a warning like:
calculated message payload length (684) not sufficient
WARNING: CPU: 0 PID: 30967 at net/ethtool/netlink.c:369 ethnl_default_doit+0x87a/0xa20
and a splat.
As usually with such warnings three conditions must be met for the warning to trigger:
- there must be no skb size rounding up (e.g. reply_size of 684);
- string set must be per-device (so that the header gets populated);
- the device name must be at least 12 characters long.
all in all with current user space it looks like reading priv flags is the only place this could potentially happen. Or with syzbot :)