{"id":"CVE-2021-46948","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: farch: fix TX queue lookup in TX event handling\n\nWe're starting from a TXQ label, not a TXQ type, so\n efx_channel_get_tx_queue() is inappropriate (and could return…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: farch: fix TX queue lookup in TX event handling\n\nWe're starting from a TXQ label, not a TXQ type, so\n efx_channel_get_tx_queue() is inappropriate (and could return…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.10.0, < 5.10.36","linux_kernel >= 5.11.0, < 5.11.20","linux_kernel >= 5.12.0, < 5.12.3"],"patched":["linux_kernel 5.12.3"],"published":"2024-02-27","updated":"2026-08-04","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-46948","references":[{"url":"https://git.kernel.org/stable/c/35c7a83ad1bb1d48ae249346e61b1132bcbf9052","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/83b09a1807415608b387c7bc748d329fefc5617e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bf2b941d0a6f2d3b9f5fa3c4c21bdd54f71ce253","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e531db1ea6f98c9612cb2de093a107c7eadfb96c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/35c7a83ad1bb1d48ae249346e61b1132bcbf9052","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/83b09a1807415608b387c7bc748d329fefc5617e","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/bf2b941d0a6f2d3b9f5fa3c4c21bdd54f71ce253","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e531db1ea6f98c9612cb2de093a107c7eadfb96c","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00591,"epssPercentile":0.46992,"ingestedAt":"2026-08-04T10:39:38.463Z","slug":"CVE-2021-46948","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nsfc: farch: fix TX queue lookup in TX event handling\n\nWe're starting from a TXQ label, not a TXQ type, so\n efx_channel_get_tx_queue() is inappropriate (and could return NULL,\n leading to panics).\n\n## Affected\n\n- `linux_kernel >= 5.10.0, < 5.10.36`\n- `linux_kernel >= 5.11.0, < 5.11.20`\n- `linux_kernel >= 5.12.0, < 5.12.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.12.3`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}