{"id":"CVE-2021-47017","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nath10k: Fix a use after free in ath10k_htc_send_bundle\n\nIn ath10k_htc_send_bundle, the bundle_skb could be freed by\ndev_kfree_skb_any(bundle_skb)","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nath10k: Fix a use after free in ath10k_htc_send_bundle\n\nIn ath10k_htc_send_bundle, the bundle_skb could be freed by\ndev_kfree_skb_any(bundle_skb). But the bundle_skb is…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.8, < 5.10.37","linux_kernel >= 5.11, < 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-2021-47017","references":[{"url":"https://git.kernel.org/stable/c/3b1ac40c6012140828caa79e592a438a18ebf71b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5e413c0831ff4700d1739db3fa3ae9f859744676","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8392df5d7e0b6a7d21440da1fc259f9938f4dec3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8bb054fb336f4250002fff4e0b075221c05c3c65","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3b1ac40c6012140828caa79e592a438a18ebf71b","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/5e413c0831ff4700d1739db3fa3ae9f859744676","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/8392df5d7e0b6a7d21440da1fc259f9938f4dec3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/8bb054fb336f4250002fff4e0b075221c05c3c65","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00339,"epssPercentile":0.27301,"ingestedAt":"2026-08-04T10:39:39.207Z","slug":"CVE-2021-47017","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nath10k: Fix a use after free in ath10k_htc_send_bundle\n\nIn ath10k_htc_send_bundle, the bundle_skb could be freed by\ndev_kfree_skb_any(bundle_skb). But the bundle_skb is used later\nby bundle_skb->len.\n\nAs skb_len = bundle_skb->len, my patch replaces bundle_skb->len to\nskb_len after the bundle_skb was freed.\n\n## Affected\n\n- `linux_kernel >= 5.8, < 5.10.37`\n- `linux_kernel >= 5.11, < 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":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}