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CVE-2026-63999

ethtool: rss: fix indir_table and hkey leak on get_rxfh failure

MEDIUM
5.5
CVSS Score
Published: July 19, 2026 at 02:56 PM UTC
Updated: October 21, 2026 at 01:19 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
5.15.181 ≤ v < 5.166.1.135 ≤ v < 6.26.12.24 ≤ v < 6.136.13.12 ≤ v < 6.146.14.3 ≤ v < 6.156.15.1 ≤ v < 6.18.356.19 ≤ v < 7.0.126.6.88 ≤ v < 6.74f038a6a02d20859a3479293cbf172b0f14cbdd65.15.1815eb3fdc4b6281b29e830300c866a36d90442b1f06.1.1356.12.246.13.126.14.36.156.15 rc26.15 rc36.15 rc46.15 rc56.15 rc66.15 rc76.6.887.17.1 rc17.1 rc27.1 rc37.1 rc47.1 rc581a5174e64ce4fb7b7a2f6499b835c904c9451eea065b996052656a65afc51ad82336dc55ae4c72fadee9db710a6117b978a25ed4153846b7c56ec9ac5ed0eaddcbda56079091fc3876b140a6e70a548ec9faff49a4ea27731de39cb887b7e590e93157b
Vendor states this is fixed in 266297692f97008ca48bc311775c087c59bd7fe3 (fixed)
Vendor states this is fixed in 33d05c22d6f227c5ae171c46df2f6f8bf48047ea (fixed)
Vendor states this is fixed in 80d95d92f828cfcace955d673637d944178b435f (fixed)
Affected range stops below 5.16, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 6.12.114 (unaffected)
Affected range stops below 6.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.14, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 6.15 (unaffected)
Vendor states this is fixed in 6.18.35 (unaffected)
Affected range stops below 6.2, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 6.6.160 (unaffected)
Affected range stops below 6.7, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 7.0.12 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

References (5)

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

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-401

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