Medium 5.5Published Jul 19, 2026

CVE-2026-63999ethtool: rss: fix indir_table and hkey leak on get_rxfh failure

Updated under an hour ago (Oct 28, 2026, 8:30 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ethtool: rss: fix indir_table and hkey leak on get_rxfh failure rss_prepare_get() allocates the indirection table and hash key buffer via rss_get_data_alloc(), then calls ops->get_rxfh() to populate them. If get_rxfh() fails, the function returns an error without freeing the allocation.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c5ed0eaddcbda56079091fc3876b140a6e70a548 before 14dbf22c397b799b3a80f63fc90c2fc0585bbeb3; from a065b996052656a65afc51ad82336dc55ae4c72f before 323faef6366349f57d4ad67d318a0c8906e360b3; from 4f038a6a02d20859a3479293cbf172b0f14cbdd6 before 33d05c22d6f227c5ae171c46df2f6f8bf48047ea; from 4f038a6a02d20859a3479293cbf172b0f14cbdd6 before 80d95d92f828cfcace955d673637d944178b435f; from 4f038a6a02d20859a3479293cbf172b0f14cbdd6 before 266297692f97008ca48bc311775c087c59bd7fe3; 81a5174e64ce4fb7b7a2f6499b835c904c9451ee; ec9faff49a4ea27731de39cb887b7e590e93157b; adee9db710a6117b978a25ed4153846b7c56ec9a; and 7 more ranges	CNA record
linux linux_kernel linux:linux_kernel	from 5.15.181 before 5.16; from 6.1.135 before 6.2; from 6.6.88 before 6.7; from 6.12.24 before 6.13; from 6.13.12 before 6.14; from 6.14.3 before 6.15; from 6.15.1 before 6.18.35; from 6.19 before 7.0.12; and 12 more ranges	NVD

References

References

https://git.kernel.org/stable/c/14dbf22c397b799b3a80f63fc90c2fc0585bbeb3
https://git.kernel.org/stable/c/323faef6366349f57d4ad67d318a0c8906e360b3
https://git.kernel.org/stable/c/33d05c22d6f227c5ae171c46df2f6f8bf48047ea	patch
https://git.kernel.org/stable/c/80d95d92f828cfcace955d673637d944178b435f	patch
https://git.kernel.org/stable/c/266297692f97008ca48bc311775c087c59bd7fe3	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.