{"id":"CVE-2026-63999","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nethtool: rss: fix indir_table and hkey leak on get_rxfh failure\n\nrss_prepare_get() allocates the indirection table and hash key buffer\nvia rss_get_data_alloc(), then ca…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nethtool: rss: fix indir_table and hkey leak on get_rxfh failure\n\nrss_prepare_get() allocates the indirection table and hash key buffer\nvia rss_get_data_alloc(), then ca…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-401"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.15.181, < 5.16","linux_kernel >= 6.1.135, < 6.2","linux_kernel >= 6.6.88, < 6.7","linux_kernel >= 6.12.24, < 6.13","linux_kernel >= 6.13.12, < 6.14","linux_kernel >= 6.14.3, < 6.15","linux_kernel >= 6.15.1, < 6.18.35","linux_kernel >= 6.19, < 7.0.12","linux_kernel = 6.15","linux_kernel = 7.1"],"patched":["linux_kernel 7.0.12"],"published":"2026-07-19","updated":"2026-10-08","sourceUpdated":"2026-10-08T15:49:03.000","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63999","references":[{"url":"https://git.kernel.org/stable/c/266297692f97008ca48bc311775c087c59bd7fe3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/33d05c22d6f227c5ae171c46df2f6f8bf48047ea","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/80d95d92f828cfcace955d673637d944178b435f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00166,"epssPercentile":0.05337,"ingestedAt":"2026-10-08T15:49:37.973Z","slug":"CVE-2026-63999","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nethtool: rss: fix indir_table and hkey leak on get_rxfh failure\n\nrss_prepare_get() allocates the indirection table and hash key buffer\nvia rss_get_data_alloc(), then calls ops->get_rxfh() to populate them.\nIf get_rxfh() fails, the function returns an error without freeing\nthe allocation.\n\n## Affected\n\n- `linux_kernel >= 5.15.181, < 5.16`\n- `linux_kernel >= 6.1.135, < 6.2`\n- `linux_kernel >= 6.6.88, < 6.7`\n- `linux_kernel >= 6.12.24, < 6.13`\n- `linux_kernel >= 6.13.12, < 6.14`\n- `linux_kernel >= 6.14.3, < 6.15`\n- `linux_kernel >= 6.15.1, < 6.18.35`\n- `linux_kernel >= 6.19, < 7.0.12`\n- `linux_kernel = 6.15`\n- `linux_kernel = 7.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.12`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}