{"id":"CVE-2026-90378","state":"PUBLISHED","title":"wifi: mt76: mt792x: Fix memory leak in SDIO TX path","description":"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 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.","publishedAt":"2026-09-17T16:09:16.655Z","updatedAt":"2026-10-19T09:02:36.822Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"b64d196280aff8494ba6fb387e37b18479c99b83","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"9ef1351209d42b7d96604f2a13d7ea8215a24e07","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"c2c7f16f2c62f79f7c381e500afa7123580742a5","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"6a8000c76dc34490a2bb321ad1a5f882a2ccab7c","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"6a342db7a6502bc6781579145e05d4d4731786ab","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"808f2767d4217a5b96f674288573b9b89d432eed","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/sdio.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.12","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/sdio.c"]}],"references":["https://git.kernel.org/stable/c/b64d196280aff8494ba6fb387e37b18479c99b83","https://git.kernel.org/stable/c/9ef1351209d42b7d96604f2a13d7ea8215a24e07","https://git.kernel.org/stable/c/c2c7f16f2c62f79f7c381e500afa7123580742a5","https://git.kernel.org/stable/c/6a8000c76dc34490a2bb321ad1a5f882a2ccab7c","https://git.kernel.org/stable/c/ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d","https://git.kernel.org/stable/c/6a342db7a6502bc6781579145e05d4d4731786ab","https://git.kernel.org/stable/c/808f2767d4217a5b96f674288573b9b89d432eed"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90378.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90378","state":"PUBLISHED","datePublished":"2026-09-17T16:09:16.655Z","dateUpdated":"2026-10-19T09:02:36.822Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.808Z"},"containers":{"cna":{"title":"wifi: mt76: mt792x: Fix memory leak in SDIO TX path","descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"b64d196280aff8494ba6fb387e37b18479c99b83","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"9ef1351209d42b7d96604f2a13d7ea8215a24e07","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"c2c7f16f2c62f79f7c381e500afa7123580742a5","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"6a8000c76dc34490a2bb321ad1a5f882a2ccab7c","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"6a342db7a6502bc6781579145e05d4d4731786ab","versionType":"git"},{"version":"b747fa343817fd322b4463dda99d28fc51e19c52","status":"affected","lessThan":"808f2767d4217a5b96f674288573b9b89d432eed","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/sdio.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.12","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/sdio.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b64d196280aff8494ba6fb387e37b18479c99b83"},{"url":"https://git.kernel.org/stable/c/9ef1351209d42b7d96604f2a13d7ea8215a24e07"},{"url":"https://git.kernel.org/stable/c/c2c7f16f2c62f79f7c381e500afa7123580742a5"},{"url":"https://git.kernel.org/stable/c/6a8000c76dc34490a2bb321ad1a5f882a2ccab7c"},{"url":"https://git.kernel.org/stable/c/ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d"},{"url":"https://git.kernel.org/stable/c/6a342db7a6502bc6781579145e05d4d4731786ab"},{"url":"https://git.kernel.org/stable/c/808f2767d4217a5b96f674288573b9b89d432eed"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:02:36.822Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}