{"id":"CVE-2021-47028","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmt76: mt7915: fix txrate reporting\n\nProperly check rate_info to fix unexpected reporting.\n\n[ 1215.161863] Call trace:\n[ 1215.164307]  cfg80211_calculate_bitrate+0x124/0…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmt76: mt7915: fix txrate reporting\n\nProperly check rate_info to fix unexpected reporting.\n\n[ 1215.161863] Call trace:\n[ 1215.164307]  cfg80211_calculate_bitrate+0x124/0…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.8, < 5.11.21","linux_kernel >= 5.12, < 5.12.4"],"patched":["linux_kernel 5.12.4"],"published":"2024-02-28","updated":"2026-08-04","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-47028","references":[{"url":"https://git.kernel.org/stable/c/4bd926e5ca88eac4d95eacb806b229f8729bc62e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dfc8a71448c7d4fec38fb22bdc8a76d79c14b6da","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f43b941fd61003659a3f0e039595e5e525917aa8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4bd926e5ca88eac4d95eacb806b229f8729bc62e","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/dfc8a71448c7d4fec38fb22bdc8a76d79c14b6da","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/f43b941fd61003659a3f0e039595e5e525917aa8","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00348,"epssPercentile":0.28496,"ingestedAt":"2026-08-04T10:39:39.236Z","slug":"CVE-2021-47028","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmt76: mt7915: fix txrate reporting\n\nProperly check rate_info to fix unexpected reporting.\n\n[ 1215.161863] Call trace:\n[ 1215.164307]  cfg80211_calculate_bitrate+0x124/0x200 [cfg80211]\n[ 1215.170139]  ieee80211s_update_metric+0x80/0xc0 [mac80211]\n[ 1215.175624]  ieee80211_tx_status_ext+0x508/0x838 [mac80211]\n[ 1215.181190]  mt7915_mcu_get_rx_rate+0x28c/0x8d0 [mt7915e]\n[ 1215.186580]  mt7915_mac_tx_free+0x324/0x7c0 [mt7915e]\n[ 1215.191623]  mt7915_queue_rx_skb+0xa8/0xd0 [mt7915e]\n[ 1215.196582]  mt76_dma_cleanup+0x7b0/0x11d0 [mt76]\n[ 1215.201276]  __napi_poll+0x38/0xf8\n[ 1215.204668]  napi_workfn+0x40/0x80\n[ 1215.208062]  process_one_work+0x1fc/0x390\n[ 1215.212062]  worker_thread+0x48/0x4d0\n[ 1215.215715]  kthread+0x120/0x128\n[ 1215.218935]  ret_from_fork+0x10/0x1c\n\n## Affected\n\n- `linux_kernel >= 5.8, < 5.11.21`\n- `linux_kernel >= 5.12, < 5.12.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.12.4`","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}