CVE-2021-47241: ethtool: strset: fix message length calculation
Vendor fix available · Affected: Linux · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 64% of scored CVEs
DescriptionCVE.org
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 :)
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Linux · LinuxVersions not stated
- Linux · Linux5.6
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
CoverageNo articles yet
No CyberSIXT article names CVE-2021-47241 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-266cwe.mitre.org
- git.kernel.org/stable/c/fb3a948143688e14e2cfd2a2812877923d0e5e92git.kernel.org
- git.kernel.org/stable/c/cfc7f0e70d649e6d2233fba0d9390b525677d971git.kernel.org
- git.kernel.org/stable/c/e175aef902697826d344ce3a12189329848fe898git.kernel.org