CVE - CVE-2021-47241

CVE-ID
CVE-2021-47241	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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 :)
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/cfc7f0e70d649e6d2233fba0d9390b525677d971 URL:https://git.kernel.org/stable/c/cfc7f0e70d649e6d2233fba0d9390b525677d971 MISC:https://git.kernel.org/stable/c/e175aef902697826d344ce3a12189329848fe898 URL:https://git.kernel.org/stable/c/e175aef902697826d344ce3a12189329848fe898 MISC:https://git.kernel.org/stable/c/fb3a948143688e14e2cfd2a2812877923d0e5e92 URL:https://git.kernel.org/stable/c/fb3a948143688e14e2cfd2a2812877923d0e5e92
Assigning CNA
kernel.org
Date Record Created
20240410	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240410)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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