{"id":"CVE-2026-90378","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt792x: Fix memory leak in SDIO TX path\n\nWhen tx_prepare_skb() returns an error in the SDIO TX path, the\nskb is not freed, leading to a memory leak","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt792x: Fix memory leak in SDIO TX path\n\nWhen tx_prepare_skb() returns an error in the SDIO TX path, the\nskb is not freed, leading to a memory leak. This ca…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= b747fa343817fd322b4463dda99d28fc51e19c52 < b64d196280aff8494ba6fb387e37b18479c99b83","Linux >= b747fa343817fd322b4463dda99d28fc51e19c52 < 9ef1351209d42b7d96604f2a13d7ea8215a24e07","Linux >= b747fa343817fd322b4463dda99d28fc51e19c52 < c2c7f16f2c62f79f7c381e500afa7123580742a5","Linux >= b747fa343817fd322b4463dda99d28fc51e19c52 < 6a8000c76dc34490a2bb321ad1a5f882a2ccab7c","Linux >= b747fa343817fd322b4463dda99d28fc51e19c52 < ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d","Linux >= b747fa343817fd322b4463dda99d28fc51e19c52 < 6a342db7a6502bc6781579145e05d4d4731786ab","Linux >= b747fa343817fd322b4463dda99d28fc51e19c52 < 808f2767d4217a5b96f674288573b9b89d432eed","Linux 5.12"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:37.040","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90378","references":[{"url":"https://git.kernel.org/stable/c/6a342db7a6502bc6781579145e05d4d4731786ab","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6a8000c76dc34490a2bb321ad1a5f882a2ccab7c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/808f2767d4217a5b96f674288573b9b89d432eed","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9ef1351209d42b7d96604f2a13d7ea8215a24e07","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b64d196280aff8494ba6fb387e37b18479c99b83","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c2c7f16f2c62f79f7c381e500afa7123580742a5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90378.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90378"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536188"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90378"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90378"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90378.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-17T16:21:47.807Z","epss":0.00215,"epssPercentile":0.1175,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-772"],"slug":"CVE-2026-90378","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt792x: Fix memory leak in SDIO TX path\n\nWhen tx_prepare_skb() returns an error in the SDIO TX path, the\nskb is not freed, leading to a memory leak. This can occur when\nzero-length frames (such as WNM NULL frames) are dropped to prevent\npotential hardware TX hangs.\n\nFix this by properly releasing the skb with ieee80211_tx_status_ext()\nwhen tx_prepare_skb() fails.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90378.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":216277,"id":"CVE-2026-90378","ts":1791274056075,"field":"cvss","old":null,"new":"5.5"},{"seq":216276,"id":"CVE-2026-90378","ts":1791274056075,"field":"severity","old":"none","new":"medium"}]}