CVE-2026-63999
Published: July 22, 2026Last modified: November 3, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.177-r0) |
| 25 LTS | linux-lts | Fixed (6.12.115-r0) | |
| Stream | linux-lts | Fixed (6.18.35-r1) |
References
- https://git.kernel.org/stable/c/14dbf22c397b799b3a80f63fc90c2fc0585bbeb3
- https://git.kernel.org/stable/c/266297692f97008ca48bc311775c087c59bd7fe3
- https://git.kernel.org/stable/c/323faef6366349f57d4ad67d318a0c8906e360b3
- https://git.kernel.org/stable/c/33d05c22d6f227c5ae171c46df2f6f8bf48047ea
- https://git.kernel.org/stable/c/80d95d92f828cfcace955d673637d944178b435f